ADVANCED ENERGY INDUSTRIES INC
10-K405, 1998-03-24
ELECTRONIC COMPONENTS, NEC
Previous: ALABAMA NATIONAL BANCORPORATION, PRER14A, 1998-03-24
Next: JACKSON NATIONAL SEPARATE ACCOUNT I, 485BPOS, 1998-03-24



<PAGE>

- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
                                       
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

                               ---------------

                                  FORM 10-K

(MARK ONE)

[X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
ACT OF 1934 (FEE REQUIRED).

For the fiscal year ended December 31, 1997.

[ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
EXCHANGE ACT OF 1934 (NO FEE REQUIRED).

For the transition period from __________  to __________.

                       Commission file number:  0-26966

                       ADVANCED ENERGY INDUSTRIES, INC.
            ------------------------------------------------------
            (Exact name of registrant as specified in its charter)


DELAWARE                                                        84-0846841
(State or other jurisdiction of incorporation               (I.R.S. Employer
or organization)                                            Identification No.)

1625 SHARP POINT DRIVE, FORT COLLINS, CO                          80525
(Address of principal executive offices)                        (Zip Code)


Registrant's telephone number, including area code:  (970) 221-4670
                                      
       Securities registered pursuant to Section 12(b) of the Act:

                                     NONE        

       Securities registered pursuant to section 12(g) of the Act:

                       COMMON STOCK, $0.001 PAR VALUE

                              (Title of Class)

Indicate by check mark whether the registrant (1) has filed all reports 
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 
1934 during the preceding 12 months (or for such shorter period that the 
registrant was required to file such reports), and (2) has been subject to 
such filing requirements for the past 90 days. Yes _X_ No __.

Indicate by check mark if disclosure of delinquent filers pursuant to Item 
405 of Regulation S-K (Section 229.405 of this chapter) is not contained 
herein, and will not be contained, to the best of registrant's 

                                       1
<PAGE>

knowledge, in definitive proxy or information statements incorporated by 
reference in Part III of this Form 10-K or any amendment to this Form 10-K [X].

As of  January 31, 1998, there were 22,500,007 shares of the Registrant's 
Common Stock outstanding and the aggregate market value of such stock held by 
non-affiliates of the Registrant was $101,827,588 (based on the closing price 
on the Nasdaq Stock Market).

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the annual shareholders report for the year ended December 31, 
1997, are incorporated by reference into Parts I and II of this Form 10-K.

Portions of the Company's definitive proxy statement for the annual 
shareholders meeting to be held May 6, 1998, are incorporated by reference 
into Part III of this Form 10-K.














                                       2
<PAGE>

                      ADVANCED ENERGY INDUSTRIES, INC.
                                  FORM 10-K
                              TABLE OF CONTENTS

PART I
  ITEM 1.  BUSINESS                                                          4
           EXECUTIVE OFFICERS OF THE REGISTRANT                             23
  ITEM 2.  PROPERTIES                                                       25
  ITEM 3.  LEGAL PROCEEDINGS                                                25
  ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY
             HOLDERS                                                        25
     
PART II
  ITEM 5.  MARKET PRICE FOR REGISTRANT'S COMMON STOCK AND
              RELATED STOCKHOLDER MATTERS                                   26
  ITEM 6.  SELECTED CONSOLIDATED FINANCIAL DATA                             27
  ITEM 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
              CONDITION AND RESULTS OF OPERATIONS                           28
  ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA                      40
  ITEM 9.  DISAGREEMENTS ON ACCOUNTING AND FINANCIAL
             DISCLOSURES                                                    59
  

PART III
  ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT               59
  ITEM 11. EXECUTIVE COMPENSATION                                           59
  ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS
             AND MANAGEMENT                                                 59
  ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS                   59


PART IV
  ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS
             ON FORM 8-K                                                    60


                                       3
<PAGE>


PART I
  
ITEM 1.  BUSINESS
  
  GENERAL
  
  Advanced Energy is a leading supplier of power conversion and control 
systems most of which are incorporated in plasma-based thin film production 
equipment. The Company's systems are key elements of semiconductor, data 
storage, flat panel display, and a range of other industrial manufacturing 
equipment that utilizes gaseous plasmas to deposit or etch thin film layers 
on materials or substrates such as silicon, glass and metals. As a result of 
a recent acquisition, the Company now provides power supplies for 
non-plasma-based processes. The effectiveness of plasma-based production 
processes depends in large part on the characteristics of the electrical 
power used to ignite and maintain the plasma. The Company's power conversion 
and control systems refine, modify and control the raw power from a utility 
and produce the power required to obtain predictable and repeatable film 
characteristics. The Company's systems are used in an array of thin film 
processes such as physical vapor deposition, etch, chemical vapor deposition, 
plasma-enhanced chemical vapor deposition and ion implantation, as well as a 
broad range of thin film applications such as the production of 
semiconductors, magnetic hard disks, CD-ROMs, audio and video discs, thin 
film heads, liquid crystal displays and optical, glass and automobile 
coatings. The Company's customers for thin film applications include Applied 
Materials, Lam Research, Balzers/Leybold, Materials Research, Multi-Arc, and 
Ulvac.

  In recent years, significant technological advances in thin film processes 
have enabled the manipulation of materials on the atomic and molecular level. 
Manufacturers can now both deposit and etch layers of materials that are less 
than one-hundredth of a micron in thickness. By using modern thin film 
production processes, manufacturers are better able to control and alter the 
electrical, magnetic, optical and mechanical characteristics of materials. 
Thin film processes have been employed most extensively in the semiconductor 
industry, where multiple thin film layers of insulating or conductive 
material are deposited on a wafer or substrate. These processes are now used 
in a growing range of diverse industries. Thin film production was initially 
accomplished using either liquid chemical or thermal processes. Plasma-based 
process technology was developed to address the limitations of wet chemistry 
and thermal technologies in certain applications requiring thinner, more 
precise film, and to enable new applications.

  The Company is seeking, as part of its long-term strategy, opportunities 
that will allow it to diversify and generate business in growth sectors that 
are not related to the thin film applications that the Company has 
historically served. The first step in achieving that objective was the 
acquisition of Tower Electronics in August 1997. Tower designs and 
manufactures products for non-thin film applications including power supplies 
for use in modems, non-impact printers, night vision goggles and laser 
devices. The acquisition of Tower expands the Company's technology and 
customer base. Representative customers 

                                       4
<PAGE>

of Tower include U.S. Robotics, Videojet International and ITT.

  The Company has achieved its market leadership position by providing 
systems which convert externally supplied power, operate over a wide range of 
power levels, control utility instabilities such as brownouts and surges 
created by raw utility power sources, and control intense localized 
electrical discharges known as arcs and control system instabilities which 
arise from the use of exotic gases and inherently unstable electrode 
arrangements. Most of the Company's products employ sophisticated switchmode 
technology that affords plasma-based systems the ability to minimize arc 
energy, which can slow down the throughput of a plasma process and may even 
destroy the substrate or the power conversion and control system. The Company 
believes the combination of its in-depth knowledge of plasma physics, its 
unique approach to product customization and its reusable engineering product 
design methodology have enabled it to develop the widest range of power 
conversion and control systems in the industry.

  Since inception, the Company, excluding Tower, has sold over 100,000 power 
conversion and control systems. Approximately 64% of the Company's sales in 
1996 and 58% in 1997 were to the semiconductor equipment industry. Advanced 
Energy sells its systems primarily through direct sales personnel to 
customers in the United States, Japan and Europe. The Company also sells 
through distributors in Singapore, China, Japan, France, Italy, Israel, South 
Korea and Taiwan. International sales represented 24% and 25% of the 
Company's sales in 1996 and 1997, respectively.

DEVELOPMENT OF COMPANY BUSINESS
  
  Advanced Energy was incorporated in Colorado in 1981 and reincorporated in 
Delaware in September 1995. In November 1995, the company effected the 
initial public offering of its common stock, $0.001 par value ("Common 
Stock"), pursuant to a registration statement on Form S-1 under the 
Securities Act of 1933, as amended (the "Securities Act"). In October 1997, 
the Company effected a second public offering of its Common Stock pursuant to 
a registration statement on Form S-3 under the Securities Act. As used in 
this Form 10-K, references to "Advanced Energy" refer to Advanced Energy 
Industries, Inc. and references to the "Company" refer to Advanced Energy and 
its consolidated subsidiaries. The Company's principal executive offices are 
located at 1625 Sharp Point Drive, Fort Collins, Colorado 80525, and its 
telephone number is (970) 221-4670.

PRODUCTS

  The Company's switchmode power conversion and control technology products 
have enabled its customers to develop new plasma processing applications. In 
1982, the Company introduced its first low-frequency switchmode power 
conversion and control system specifically designed for use in plasma 
processes. In 1983, the Company 

                                       5
<PAGE>

introduced its first direct current (DC) system designed for use in PVD 
sputtering applications. This DC-based system is a compact, cost-effective 
power solution, which greatly reduced stored energy, a major limitation in 
PVD systems. In the early 1990's the Company introduced the first fully 
switchmode radio frequency (RF) power conversion and control systems for use 
in semiconductor etch applications. This product achieved significant design 
wins because of its smaller size and precise control. The Company introduced 
a family of accessories for the DC product line in 1993; these pulsed DC 
products provide major improvements in arc prevention and suppression. The 
Company is currently extending the power range of its systems to much higher 
power levels to enable it to supply products for emerging industrial 
applications. The Company's products currently range in price from $2,880 to 
$80,000, with an average price of approximately $10,000. As a result of an 
acquisition in August 1997, the Company expanded its product line to include 
low-power DC power supplies for use in telecommunications and other 
industrial applications. These power supplies range in power from 50 watts to 
600 watts and have an average selling price of about $500.

  The following chart sets forth the Company's principal product lines and 
related basic information:












                                       6
<PAGE>

<TABLE>
- --------------------------------------------------------------------------------
                   PRODUCT                    POWER/CURRENT     MAJOR PROCESS
                  PLATFORM    DESCRIPTION         LEVEL          APPLICATIONS
- --------------------------------------------------------------------------------
<S>              <C>        <C>              <C>              <C>
                 MDX        Power control    500W-80kW        PVD
                            and                               - Metal     
                            conversion                          sputtering
                            system                            - Reactive  
                                                                sputtering
               -----------------------------------------------------------------
     DIRECT      MDX-II     Power control    15kW-120kW       PVD
                            and                               - Metal     
                            conversion                          sputtering
                            system                            - Reactive  
    CURRENT                                                     sputtering
               -----------------------------------------------------------------
                Pinnacle    Power control    6kW-120kW        PVD
                -TM-        and                               - Metal   
    PRODUCTS                conversion                        sputtering
                            system                            - Reactive
                                                              sputtering
               -----------------------------------------------------------------
                Sparc-le     Arc management   1kW-60kW        For use with MDX 
                -Registered  accessory                        systems --
                Trademark-                                    permits precise
                                                              control of
                                                              reactive
                                                              sputtering of
                                                              insulating films
               -----------------------------------------------------------------
                E-Chuck     Electrostatic    < 100W           General wafer
                            chuck power                       handling in
                            system                            semiconductor
                                                              PVD, CVD, and
                                                              etch applications
- --------------------------------------------------------------------------------
   HIGH-POWER   Astral-TM-  Pulsed DC power  20kW             PVD 
                - 20        system                            - Metal
                                                              sputtering
                                                              - Reactive
                                                              sputtering
               -----------------------------------------------------------------
    PRODUCTS    Astral-TM-  Pulsed DC power  120kW            PVD 
                - 120       system                            - Metal
                                                              sputtering
                                                              - Reactive
                                                              sputtering
               -----------------------------------------------------------------
                Crystal-TM- Multizone        120kW            Semiconductor
                            induction                         epitaxy
                            heating power
                            system
- --------------------------------------------------------------------------------
                 PE         Low-frequency    1.25kW-30kW      CVD
 LOW- AND MID-              power control                     PVD
                            and                               - Reactive  
                            conversion                        sputtering  
                            system                            Surface     
   FREQUENCY                                                  modification
               -----------------------------------------------------------------
                 PD         Mid-frequency    1.25kW-8kW       CVD
    PRODUCTS                power control                     PVD
                            and                               - Reactive  
                            conversion                        sputtering  
                            system                            Surface     
                                                              modification
- --------------------------------------------------------------------------------
                HFV/HFG     Power control    3kW-8kW          PVD
                            and
                            conversion                        Etch
                            system
               -----------------------------------------------------------------
     RADIO       RFX        Power control    600W             General R&D
                            and
                            conversion
                            system
               -----------------------------------------------------------------
   FREQUENCY     RFG        Power control    600W-5.5kW       Etch
                            and
                            conversion                        CVD
                            system
               -----------------------------------------------------------------
    PRODUCTS     RFXII      Power control    600W-5.5kW       Etch
                            and
                            conversion                        CVD
                            system
               -----------------------------------------------------------------
                 AZX        Tuner            100W-5kW         Impedance
                                                                matching
                                                                network
- --------------------------------------------------------------------------------
     OTHER       RFZ        Probe            50W-5kW          Impedance
                                                                measurement
                                                                tool
               -----------------------------------------------------------------
    PRODUCTS     ID         Ion-beam         500W-5kW         Ion-beam
                            conversion and                    deposition
                            control system                    Ion implantation
                                                              Ion-beam etching/
                                                                milling
- --------------------------------------------------------------------------------
</TABLE>


 DIRECT CURRENT PRODUCTS

  THE MDX SERIES.  The Company's MDX series of products was introduced in 
1983. These products are most commonly used as DC power supplies for PVD 
sputtering where precise control, superior arc prevention and suppression and 
low stored energy characteristics are required. They are also used as bias 
supplies for RF sputtering, tool coating and some etching systems. The MDX 
series consists of six different product lines that provide a range of power 
levels from 500W to 120kW. The Company's second generation product, the MDX 
II, was introduced in 1991 to support higher power levels, 

                                       7
<PAGE>

to provide wider output range, and to meet strict European regulatory 
requirements. A model in the MDX series, the MDX-L, was designed for 
especially high reliability and was introduced in 1992.

  THE PINNACLE SERIES-TM-.  The Pinnacle series, introduced in 1995, is the 
most recent platform in the DC product line. Pinnacle was developed primarily 
for use in DC PVD sputtering processes and provides substantial improvements 
in arc prevention, arc suppression capability, reduced size, higher precision 
and expanded control capability.  The low stored energy of Pinnacle, a basic 
feature of AE power conversion equipment, is the lowest ever achieved in a 
switchmode power supply, and is due to the patented basic circuit topology.

  SPARC-LE-Registered Trademark- ACCESSORIES.  The Company's Sparc-le line of 
DC accessories, introduced in 1993, is designed both to reduce the number of 
arcs that occur in plasma-based processes and to reduce the energy delivered 
if arcs do occur. The Sparc-le accessories are especially effective in 
applications involving the deposition of insulative materials where the 
reaction between the plasma and target is likely to produce more severe arc 
conditions. The Sparc-le accessories are most commonly used with the MDX 
product lines. The Sparc-le arc prevention and suppression technology has 
been incorporated directly into the Pinnacle systems.
  
  ELECTROSTATIC CHUCK POWER SYSTEMS.  This system of power conversion units 
was designed for a specific customer to be used in wafer handling systems for 
the semiconductor fabrication market. The electrostatic chuck is a device 
which uses electric fields to hold (or "chuck") a wafer in a vacuum 
environment without mechanical holding force. This permits more gentle 
handling of the wafer and its simultaneous heating or cooling during 
processing. The electric fields used to hold the wafer are created by 
applying to the wafer a voltage produced by the Advanced Energy power system. 
Exact control and careful ramping of the voltage permits the wafer to be 
picked and placed with precision. The system permits multiple power units to 
be held in a single chassis for ease of integration into the customer's 
system.

 HIGH-POWER PRODUCTS

  These products are designed for use in heavy industrial processes such as 
architectural glass and other large area coating applications. The 
Astral-TM-products, made in both 20kW and 120kW versions, offer a new 
technology, called "current pulsed dual magnetron sputtering," heretofore 
unavailable. The first of these units are in experimental use in development 
of coatings for CRT displays, automotive applications, and new types of glass 
coatings.

  The Crystal-TM- 120kW power conversion unit was developed for multizone 
induction heating in heating systems for semiconductor processing equipment 
in which layers are formed on heated semiconductor wafers by chemical vapor 
deposition, producing 

                                       8
<PAGE>

epitaxial growth (the growth of a single crystal film as determined by the 
underlying wafer). One of the problems in forming such layers on a 
semiconductor wafer is ensuring that the temperature of the semiconductor 
wafer is kept uniform across the wafer during the deposition process, i.e., 
during heat-up, processing and cool-down. Since the deposition rate of a 
layer of material upon the wafer is dependent on the temperature of the 
wafer, any temperature variations between the center and edge of a wafer will 
undesirably result in the deposition of a layer of non-uniform thickness on 
the wafer. The multizone capability of the Crystal 120kW power conversion 
unit permits the furnace system to divide the wafer heater into up to six 
zones, and control power to each zone independently.

 LOW- AND MID-FREQUENCY PRODUCTS

  THE PE AND PD SERIES.  The PE low-frequency power systems were introduced 
in 1982. The PE series systems are air cooled and primarily intended for use 
in certain PVD, CVD and industrial surface modification applications, 
including dual cathode sputtering and printed circuit board de-smearing. The 
PE series systems range in frequency from 25kHz to 100kHz. The low-frequency 
PE systems and the PD series of mid-frequency power conversion and control 
systems, introduced in 1990, represented significant technological 
advancements by applying switchmode techniques to higher frequencies. The 
water-cooled PD systems are used primarily in semiconductor etch and CVD 
applications. The PD series range in frequency from 275kHz to 400kHz. Both 
the PE and PD series systems have single-stage power generation, and include 
systems that incorporate pulsed power technology.

 RADIO FREQUENCY PRODUCTS

  THE HFV AND HFG POWER GENERATORS.  The HFV unit produces 3, 5, or 8kW of 
power at a variable frequency of about 2MHz for powering of inductively 
coupled plasma (ICP) systems. It is water cooled and ultra compact, providing 
up to 8kW of power in a 5-1/4 inch rack mount enclosure 20-1/4 inches deep, 
thereby representing the highest power density in the industry. The HFG unit 
is similar but produces 8kW at a fixed frequency of 4MHz.
  
  THE RF SERIES.  The RFX system is a 13.56MHz, 600W, air-cooled platform 
introduced in 1985. This low-power system is used primarily in research and 
development applications. The RFG and RFXII, introduced in 1991 and 1992, 
respectively, are water-cooled power conversion and control systems utilizing 
a new hybrid switchmode technology. The RFG and RFXII systems operate at 
frequencies ranging from 4MHz to 13.56MHz. These systems were the first 
entirely switchmode RF designs. These RF systems are most commonly used in 
semiconductor processes, including RF sputtering, plasma etching/deposition, 
and reactive ion etching applications. The Company also produces the RFXII in 
a compact version which incorporates new Fixed Match-TM- impedance matching 
technology. This technology eliminates certain previously required motors, 
gear trains, variable capacitors and inductors and 

                                       9
<PAGE>

servomechanism circuitry, which results in cost savings and improvements in 
reliability.

  THE AZX SERIES.  The AZX series tuners are RF matching networks designed as 
accessories to match the complex electrical characteristics of a plasma to 
the requirements of the Company's RF series of power conversion and control 
systems. AZX tuners, introduced in 1989, are also sold separately for 
incorporation into other vendors' power conversion and control systems. The 
AZX tuners typically operate at a 13.56MHz frequency range. The need for 
these tuner products is reduced with the advent of the Fixed Match technology 
designed as part of the RFXII product line.
 
 OTHER PRODUCTS
  
  THE RFZ IMPEDANCE PROBE.  The RF impedance probe, introduced in 1993, is 
used for measuring the RF properties of a plasma. The sensing technology 
incorporated in the RF impedance probe allows accurate, real-time measurement 
of power, voltage, current and impedance levels under actual powered process 
conditions.
  
  THE ID SERIES.  The ID power conversion and control systems, introduced in 
1981, were the first products designed by the Company. These systems were 
specifically designed to power broad-beam ion sources. ID series systems are 
composed of a coordinated set of multiple special purpose power supplies that 
are used for ion-beam deposition and sputtering, implantation and etching and 
milling.

MARKETS AND CUSTOMERS
 
 MARKETS

  Approximately 64% of the Company's sales in 1996 and 58% in 1997 were to 
the semiconductor equipment industry. Increasingly, the Company's power 
conversion and control systems are also being used in other markets, 
including flat panel display, data storage and various industrial 
applications. The following is a discussion of the major markets for the 
Company's systems:

  SEMICONDUCTOR MANUFACTURING EQUIPMENT MARKET.  The Company's products are 
sold primarily to semiconductor equipment manufacturers for incorporation 
into equipment used to make integrated circuits. The Company's products are 
currently employed in a variety of applications including deposition, etch, 
ion implantation and megasonic cleaning. The precision control over plasma 
processes that use the Company's power conversion and control systems enables 
the production of integrated circuits with reduced feature sizes and 
increased speed and performance. The Company anticipates that the 
semiconductor equipment industry will continue to be a substantial part of 
its business for the foreseeable future.


                                      10
<PAGE>

   FLAT PANEL DISPLAY MANUFACTURING EQUIPMENT MARKET.  The Company also sells 
its systems to manufacturers of flat panel displays (FPDs) and flat panel 
projection devices (FPPs) which have fabrication processes similar to those 
employed in manufacturing integrated circuits. FPDs produce bright, sharp, 
large, color-rich images on flat, lightweight screens such as portable 
computer monitors. Currently there are three major types of FPDs: liquid 
crystal displays, field emitter displays and gas plasma displays. Two types 
of FPP, another emerging display technology, are currently in production: 
liquid crystal projection and digital micro-mirror displays. The Company 
sells its products to all three of the active FPD markets, as well as to each 
of the FPP markets.
  
   DATA STORAGE MANUFACTURING EQUIPMENT MARKETS.  The Company's products are 
sold to data storage equipment manufacturers and to data storage device 
manufacturers for use in producing a variety of products, including compact 
discs, computer hard disks (both media and thin film heads), CD-ROMs and 
digital video discs (DVD). These products use a PVD sputtering process to 
produce optical and magnetic thin film layers, as well as a protective wear 
layer. In this market the trend towards higher recording densities is driving 
the demand for increasingly dense, thinner and more precise films. The use of 
equipment incorporating magnetic media to store analog and digital data 
continues to expand with the growth of the laptop, desktop, and workstation 
computer markets.

   THIN FILM INDUSTRIAL MARKETS.  The Company sells its products to both OEMs 
and producers of end products in a variety of industrial markets. Thin film 
optical coatings are used in the manufacture of many industrial products 
including solar panels, architectural glass, eyeglasses, lens coatings, 
bar-code readers and front surface mirrors. Thin films of diamond coatings 
and other materials are now being applied to products in plasma-based 
processes to strengthen and harden surfaces on such diverse products as 
tools, automotive parts and hip joint replacements. A variety of industrial 
packaging applications, such as decorative wrapping and food packaging, are 
also enabled by thin film processes utilizing the Company's products. The 
advanced thin film production processes allow precise control of various 
optical and physical properties, including color, transparency and electrical 
and thermal conductivity. The improved adhesion and high film quality 
resulting from plasma processing makes it the preferred method of applying 
the thin films. Many of these thin film industrial applications require power 
levels substantially greater than those used in the Company's other markets.
  
   OTHER INDUSTRIAL MARKETS.  Tower Electronics sells low-wattage power 
supplies to OEMs in the telecommunications, non-impact printing and laser 
markets. As an example, Tower provides U.S. Robotics, a subsidiary of 3Com, 
with three models of power supplies that are used in modems for Internet 
service providers. They also provide products to the largest manufacturer of 
non-impact printers used for printing date codes and lot information on 
beverage cans.

                                     11
<PAGE>

   APPLICATIONS

   The Company's products have been sold for use in connection with the 
following processes and applications:

<TABLE>

   SEMICONDUCTOR      DATA STORAGE     FLAT PANEL DISPLAY    INDUSTRIAL/RESEARCH
   -------------      ------------     ------------------    -------------------
<S>                  <C>               <C>                   <C>
 Physical vapor      Thin film heads     Liquid crystal      Optical coatings
  deposition                              displays
 Etching             CD-ROMs             Active matrix LCDs  Automobile coatings
 Ion implantation    Audio discs         Digital micro-      Food package
                                          mirror              coatings
 Chemical vapor      Recordable CDs      Plasma displays     Glass coatings
  deposition (metal                      
  and dielectric)                        
 Plasma-enhanced     Hard disk           Large flat panel    Consumer products
  CVD                 magnetic media      displays            coatings
 Magnet field        Hard disk carbon    Field emission      Circuit board etch-
  controls            wear coatings       displays            back and de-smear
 Photo-resist        Magneto-optic CDs   LCD projection      Photovoltaics
  stripping                              
 Megasonic cleaning  Digital video                           Medical applications
                      discs (DVD)        
 Etch (post-                                                 Superconductors
  treatment)                                                 Diamond coatings
                                                             Chemical, physical
                                                              and materials research
                                                             Telecommunications
                                                             Non-impact printing
</TABLE>


   CUSTOMERS

   The Company has sold its systems worldwide to more than 100 OEMs and 
directly to more than 500 end-user customers. Since inception, the Company 
has sold more than 100,000 power conversion and control systems. The 
Company's largest customers are involved principally in the semiconductor 
equipment market. The Company also has significant customers in the data 
storage equipment, flat panel display equipment and industrial markets. Sales 
to Applied Materials and Lam Research in 1995, 1996 and 1997 accounted in the 
aggregate for approximately 41%, 47% and 44% of total sales, respectively. 
The Company expects that sales of its products to Applied Materials and Lam 
Research will continue to account for a high percentage of its sales in the 
foreseeable future. Representative customers of the Company include:

 Applied Materials                        Lam Research
 Balzers/Leybold                          Materials Research division of
                                           Tokyo Electron
 CVC Products                             Motorola
 First Light Technology                   Novellus
 Fujitsu                                  Optical Coating Laboratory
 Hewlett-Packard                          Sony
 IBM                                      Sputtered Films
 Intevac                                  Texas Instruments
 Komag                                    Ulvac
                                          U.S. Robotics
                                          Verteq
                                          Videojet International


MARKETING, SALES AND SERVICE

   The Company sells its systems primarily through direct sales personnel to 
customers 

                                     12
<PAGE>

in the United States, Japan and Europe. The Company's sales personnel are 
located at the Company's headquarters in Fort Collins, Colorado, and in 
regional sales offices in Milpitas, California; Concord, Massachusetts; and 
Austin, Texas. To serve customers in Asia and Europe, the Company has offices 
in Tokyo, Japan; Filderstadt, Germany; Bicester, United Kingdom; and Seoul, 
South Korea; which have primary responsibility for sales in their respective 
markets. The Company also sells to customers in Japan through Landmark 
Technology Corporation and has distributors and sales representatives in 
Singapore, China, France, Italy, Israel, South Korea and Taiwan. The 
Company's Tower Electronics subsidiary, located in Fridley, Minnesota, sells 
through manufacturer's representatives.

   Sales outside the United States represented approximately 29%, 24% and 25% 
of the Company's total sales during 1995, 1996 and 1997, respectively. The 
Company expects sales outside the United States to continue to represent a 
significant portion of future sales. Although the Company has not experienced 
any significant difficulties in connection with its international sales, such 
sales are subject to certain risks, including exposure to currency 
fluctuations, the imposition of governmental controls, political and economic 
instability, trade restrictions, changes in tariffs and taxes, and longer 
payment cycles typically associated with international sales. The future 
performance of the Company will depend, in part, upon its ability to compete 
successfully in Japan, one of the largest markets for semiconductor 
fabrication equipment and flat panel display equipment, and a major market 
for data storage and other industrial equipment utilizing the Company's 
systems. The Japanese market has historically been difficult for non-Japanese 
companies to penetrate. Although the Company and a number of its significant 
non-Japanese customers have begun to establish operations in Japan, there can 
be no assurance that the Company or its customers will be able to maintain or 
improve their competitive positions in Japan.

   The Company believes that customer service and technical support are 
important competitive factors and are essential to building and maintaining 
close, long-term relationships with its customers. The Company maintains 
customer service offices in Fort Collins, Colorado; Milpitas, California; 
Tokyo, Japan; Filderstadt, Germany; Seoul, South Korea; and Tower Electronics 
in Fridley, Minnesota.

   The Company offers warranty coverage for its systems for periods ranging 
from 12 to 24 months after shipment against defects in design, materials and 
workmanship.

MANUFACTURING

   The Company's manufacturing facilities are located in Fort Collins, 
Colorado and Fridley, Minnesota. The Company's manufacturing activities 
consist of the assembly and testing of components and subassemblies which are 
then integrated into final products. Once final testing of all electrical and 
electro-mechanical subassemblies is completed, the final product is subjected 
to a series of reliability enhancing operations prior to shipment 

                                     13
<PAGE>

to customers. The Company purchases a wide range of electronic, mechanical 
and electrical components, some of which are designed to the Company's 
specifications. The Company does outsource some of its subassembly work.

   The Company relies on sole and limited source suppliers for certain parts 
and subassemblies. This reliance creates a potential inability to obtain an 
adequate supply of required components, and reduced control over pricing and 
time of delivery of components. An inability to obtain adequate supplies 
would require the Company to seek alternative sources of supply or might 
require the Company to redesign its systems to accommodate different 
components or subassemblies. This could prevent the Company from shipping its 
systems to its customers on a timely basis. However, if the Company were 
forced to seek alternative sources of supply, manufacture such components or 
subassemblies internally, or redesign its systems, this could prevent the 
Company from shipping its systems to its customers on a timely basis.
  

INTELLECTUAL PROPERTY

   The Company has a policy of seeking patents on inventions governing new 
products or technologies as part of its ongoing research, development, and 
manufacturing activities. The Company currently holds twelve United States 
patents and two foreign patents covering various aspects of its products, and 
has other applications pending in the U.S., Europe and Japan. The Company 
believes the duration of its patents generally exceeds the life cycles of the 
technologies disclosed and claimed therein. No assurance can be given that 
the Company's patents will be sufficiently broad to protect the Company's 
technology, nor that any existing or future patents will not be challenged, 
invalidated or circumvented, or that the rights granted thereunder will 
provide meaningful competitive advantages to the Company. Any of such events 
could have a material adverse effect on the Company's business, financial 
condition and results of operations.

   Although the Company is not aware of any infringement by its products of 
any patents or proprietary rights of others, there can be no assurance that 
such infringements do not exist or will not occur in the future. Litigation 
may be necessary in the future to enforce patents issued to the Company, to 
protect trade secrets or know-how owned by the Company, to defend the Company 
against claimed infringement of the rights of others or to determine the 
scope and validity of the proprietary rights of others. Any such litigation 
could result in substantial cost and diversion of effort by the Company, 
which could have a material adverse effect on the Company's business, 
financial condition and results of operations. Moreover, adverse 
determinations in such litigation could result in the Company's loss of 
proprietary rights, subject the Company to significant liabilities to third 
parties, require the Company to seek licenses from third parties or prevent 
the Company from manufacturing or selling its products, any of which could 
have a material adverse effect on the Company's business, financial condition 
and results of operations.

                                     14
<PAGE>

COMPETITION

   The markets the Company serves are highly competitive and characterized by 
rapidly evolving technology. Significant competitive factors in the Company's 
markets include product performance, price, quality and reliability and level 
of customer service and support. The Company believes that it currently 
competes effectively with respect to these factors, although there can be no 
assurance that the Company will be able to compete effectively in the future.

   The markets in which the Company competes have seen an increase in global 
competition, especially from Japanese- and European-based equipment vendors. 
The Company has several foreign and domestic competitors for each of the DC, 
low-frequency and mid-frequency alternating current (AC), and radio frequency 
AC lines of products. Some of these competitors are larger and have greater 
resources than the Company. The Company's ability to continue to compete 
successfully in these markets will depend upon its ability to introduce 
product enhancements and new products on a timely basis. The Company's 
primary competitors are ENI, a subsidiary of Astec (BSR) PLC, Huttinger, 
Shindingen, Kyosan, RF Power Products, Comdel and Daihen. The Company's 
competitors in each product area are expected to continue to improve the 
design and performance of their systems and to introduce new systems with 
competitive performance characteristics. To remain competitive, the Company 
believes it will be required to maintain a high level of investment in 
research and development and sales and marketing. No assurance can be given 
that the Company will continue to be competitive in the future.

INDUSTRY SEGMENTS

   The Company operates entirely within one industry sector.

RESEARCH AND DEVELOPMENT

   The market for power conversion and control systems and related 
accessories is characterized by rapid technological changes. The Company 
believes that continued and timely development of new products and 
enhancements to existing products to support OEM requirements is necessary 
for the Company to maintain a competitive position in the markets the Company 
serves. Accordingly, the Company devotes a significant portion of its 
personnel and financial resources to research and development projects and 
seeks to maintain close relationships with its customers and other industry 
leaders to remain responsive to their product requirements.

   Research and development expenses were approximately $10.5 million, $13.8 
million and $14.8 million in fiscal 1995, 1996 and 1997, respectively. These 
amounts represented 

                                     15
<PAGE>

11.1%, 13.9% and 10.4% of total sales for those periods. From 1995 to 1997, 
the Company introduced more than forty-five new products. The Company 
believes that continued research and development investment and ongoing 
development of new products is essential to the expansion of its markets and 
does not expect any significant decline in spending as a percentage of sales.

NUMBER OF EMPLOYEES

   At December 31, 1997, the Company had a total of 1,059 employees, of whom 853
are full-time continuous employees. None of the Company's employees is
represented by a union, and the Company has never experienced a work stoppage.
The Company utilizes temporary employees as a means to provide additional staff
while reviewing the performance of the temporary employee. The Company considers
its employee relations to be good.


EFFECTS OF ENVIRONMENTAL LAWS

   The Company is subject to federal, state and local environmental laws and
regulations.  The Company is in compliance with all such laws and regulations.

CAUTIONARY STATEMENTS - RISK FACTORS

   In the interest of providing the Company's shareholders and potential
investors with certain Company information, including management's assessment of
the Company's future potential, certain statements set forth herein contain or
are based on projections of revenue, income, earnings per share and other
financial items or relate to management's future plans and objectives or to the
Company's future economic performance. Such statements are "forward-looking
statements" within the meaning of Section 27A of the Securities Act and Section
21E of the Securities Exchange Act of 1934, as amended.

   Although any forward-looking statements contained herein or otherwise
expressed by or on behalf of the Company are to the knowledge and in the
judgment of the officers and directors of the Company, expected to prove true
and to come to pass, management is not able to predict the future with absolute
certainty. Accordingly, shareholders and potential investors are hereby
cautioned that certain events or circumstances could cause actual results to
differ materially from those projected or predicted herein. In addition, the
forward-looking statements herein are based on management's knowledge and
judgment as of the date hereof, and the Company does not intend to update any
forward-looking statements to reflect events occurring or circumstances existing
hereafter.

  
   In particular, the Company believes that the following factors could impact
forward-

                                     16
<PAGE>

looking statements made herein or in future written or oral releases and by 
hindsight, prove such statements to be overly optimistic and unachievable.

QUARTERLY OPERATING RESULTS ARE SUBJECT TO SIGNIFICANT FLUCTUATIONS

   The Company has experienced and expects to continue to experience 
significant fluctuations in its quarterly operating results. As a supplier of 
subsystems to equipment manufacturers, the Company's sales often are subject 
to its customers' production schedules. A substantial and increasing 
proportion of the Company's shipments are made on a just-in-time basis in 
which the shipment of systems occurs within a few days or hours after an 
order is received. Due to the short time between receipt of orders and 
shipments, the Company operates with a low level of backlog. Moreover, this 
backlog at any point in time is not sufficient to meet the Company's revenue 
expectations for a particular quarter and orders generally are subject to 
cancellation or delay at the customer's option without penalty. As a result 
of these factors, it is difficult for the Company to predict accurately the 
timing and level of revenues for a particular quarter. The Company's 
quarterly revenues are also affected by a variety of other factors, including 
specific economic conditions in the industries in which the Company's 
customers operate, particularly the semiconductor industry; the timing of the 
receipt of orders from major customers; customer cancellations or shipment 
delays; pricing competition; component shortages resulting in manufacturing 
delays; changes in customers' inventory management practices; exchange rate 
fluctuations and the introduction of new products by the Company or its 
competitors. In addition, electronics companies, including companies in the 
semiconductor capital equipment industry, are subject to ongoing pressure to 
reduce costs. This has in the past caused and is continuing to cause the 
Company's current and prospective customers to exert pricing pressure and 
make other demands on the Company, which may include faster delivery times 
and longer payment terms, which could lead to significant changes in revenue 
and operating margins from quarter to quarter. 

   The Company's gross profit and operating income in a particular quarter 
are affected by a number of factors, including product mix, price changes, 
outsourcing costs, manufacturing efficiencies and costs incurred to respond 
to specific feature requests by customers. Generally, the Company's gross 
profit and operating income have fluctuated significantly as a result of 
these factors in the past, and such fluctuations may continue. In particular, 
as the Company expands manufacturing capacity, manufacturing overhead and 
other costs may be incurred prior to full utilization of the additional 
facilities. As a result, the Company may incur significant development and 
other expenses without realizing corresponding revenue in the same quarter. 
In addition, many of the Company's expenses, which are based in part on 
expectations of future revenue, are fixed. Accordingly, if revenue levels in 
a particular quarter do not meet expectations, operating results will be 
disproportionately adversely affected. The Company has recently gone through 
a period of increasing production and capacity to meet anticipated demand for 
its products, which has involved substantial expenditures and commitments by 
the Company. If the Company does not generate the revenue it anticipated when 
it began these production and capacity increases, its operating results will 
be adversely affected. This dynamic negatively impacted the Company 

                                     17
<PAGE>

throughout 1996 and the first half of 1997. In late 1995, the Company was in 
a growth mode and when the semiconductor capital equipment market went 
through the major downturn of 1996, the Company's operating results were 
severely impacted, which in turn had a material adverse effect on the market 
price of the Company's Common Stock. Further fluctuations in operating 
results on a quarterly basis could have a material adverse effect on the 
market price of the Common Stock. 

THE SEMICONDUCTOR AND SEMICONDUCTOR EQUIPMENT INDUSTRIES ARE HIGHLY VOLATILE

   Approximately 61%, 64% and 58% of the Company's sales in 1995, 1996, and 
1997, respectively, were made to customers in the semiconductor equipment 
industry. The Company expects that its business will continue to depend in 
significant part on the semiconductor and semiconductor equipment industries 
for the foreseeable future. The Company's business depends in large part upon 
capital expenditures by manufacturers of semiconductor devices, which in turn 
depend upon the current and anticipated market demand for semiconductor 
devices and products utilizing such devices. The semiconductor industry 
historically has been highly volatile and has experienced periods of 
oversupply, resulting in significantly reduced demand for semiconductor 
fabrication equipment. In 1996, the semiconductor industry experienced a 
significant downturn, which caused a number of the Company's customers, 
including Applied Materials and Lam Research, to drastically reduce and, in 
some cases cancel, their orders from the Company. Applied Materials and Lam 
Research together accounted for approximately 47% and 44% of the Company's 
revenues during 1996 and 1997, respectively. 

SIGNIFICANT SALES ARE CONCENTRATED AMONG A FEW CUSTOMERS

   The Company's sales generally are concentrated among a small number of 
customers. Sales to the Company's ten largest customers accounted for 
approximately 73% and 75%  of the Company's sales in 1996 and 1997, 
respectively. The loss of any of its major customers, particularly Applied 
Materials or Lam Research, or a reduction in orders from any of such 
customers, including reductions caused by changes in a customer's competitive 
position or economic conditions in the industries in which the Company's 
customers compete, could have a material adverse effect on the Company's 
business, financial condition and results of operations. None of the 
Company's customers has entered into a long-term agreement requiring it to 
purchase the Company's systems. Similarly, Tower's sales historically have 
been concentrated among a small number of customers. Tower's sales to U.S. 
Robotics (recently acquired by 3Com Corporation) and its contract 
manufacturer accounted for approximately 73% of Tower's total sales in 1997. 
The success of the Company's acquisition of Tower will depend in large part 
on retention of Tower's major customers, including U.S. Robotics and its 
contract manufacturer, and the level of orders received from such customers. 

RISKS ASSOCIATED WITH MANUFACTURING FACILITY

   All of the Company's manufacturing is conducted at its facility in Fort 
Collins, Colorado 

                                     18
<PAGE>

except for the manufacturing conducted by its subsidiary Tower Electronics in 
Fridley, Minnesota. In July 1997, the Company sustained substantial damage to 
its facilities and certain equipment and inventory due to excess surface 
water caused by a severe rainstorm in Fort Collins. The Company was forced to 
cease manufacturing temporarily and did not resume full production until 
mid-September 1997. The Company's insurance policies will not cover all of 
the costs incurred by the Company in connection with the rainstorm.  Because 
substantially all of the Company's manufacturing is conducted in one 
location, there can be no assurance that future natural or other occurrences, 
out of the Company's control, will not have a material adverse effect on the 
Company's operations. Cessation of manufacturing or the Company's inability 
to operate the Fort Collins facility at full capacity for any extended period 
could have a material adverse effect on the Company's business, financial 
condition and results of operations. 

RISKS ASSOCIATED WITH RECENT AND POTENTIAL FUTURE ACQUISITIONS

   The Company intends to expand its product offerings and customer base in 
part by acquiring other businesses, products and technologies that are 
complementary to those of the Company. In 1997, the Company acquired Tower 
and, in a separate transaction, acquired all of the assets of MIK Physics, 
Inc. ("MIK"). The assets acquired from MIK consisted predominantly of 
inventory, and the purchase price paid by the Company was immaterial. Tower 
designs and manufactures custom, high performance switchmode power supplies 
for use principally in the telecommunications, medical and non-impact 
printing industries, and MIK has developed technology to design and 
manufacture high power systems for certain industrial uses. The Company 
continues to operate Tower's business out of Tower's existing facilities in 
Fridley, Minnesota, and, accordingly, is required to manage two 
geographically separated manufacturing locations. Failure to integrate Tower, 
or any future acquisitions, without substantial costs, delays or other 
operational or financial problems could have a material adverse effect on the 
Company's business, financial condition and results of operations. Further, 
future acquisitions by the Company may result in dilutive issuances of equity 
securities, the incurrence of debt, large one-time expenses and the creation 
of goodwill or other intangible assets that could result in significant 
amortization expense. In addition, there can be no assurance that the Company 
will be able to identify, negotiate and consummate acquisitions that it 
considers advantageous to its business plans.  

MANAGEMENT OF GROWTH

   The Company has been experiencing a period of rapid growth and expansion. 
Such growth and expansion has placed, and is expected to continue to place, 
significant demands on the Company's resources. The management of such growth 
will require the Company to continue to improve and expand its management, 
operational and financial systems, procedures and controls, including 
accounting and other internal management systems, quality control, delivery 
and service capabilities. To accommodate its recent growth, the Company 
started to implement in 1997 a new comprehensive, integrated information 
management system that will incorporate substantially all of the Company's 
internal 

                                     19
<PAGE>

financial and business systems, procedures and controls. The implementation 
is progressing well but the system is still prone to problems which can 
introduce severe disruptions in the Company's daily operations. 

   The Company has postponed implementation of the new system at its 
international locations, due primarily to a shortage of trained personnel and 
other resources. In addition, the Company intends to continue to operate 
Tower's business out of Tower's existing facilities in Fridley, Minnesota and 
has retained all of Tower's employees. The failure to manage growth 
effectively, including delays or difficulties implementing new systems, 
procedures and controls or integrating acquisitions in a timely manner and 
without disruption of the Company's operations, could have a material adverse 
effect on the Company's business, financial condition and results of 
operations. 

SUPPLY CONSTRAINTS AND DEPENDENCE ON SOLE AND LIMITED SOURCE SUPPLIERS

   Manufacture of the Company's power conversion and control systems requires 
numerous electronic components. Growth in the electronics industry has 
significantly increased demand for such components. This demand can result in 
periodic shortages and allocations, which the Company has experienced from 
time to time. The Company expects that shortages and allocations of 
electronic components and subassemblies will continue in the foreseeable 
future and could result in shipment delays. Such delays could damage the 
Company's relationships with current and prospective customers, which in turn 
could have a material adverse effect on the Company's business, financial 
condition and results of operations. In this regard, the Company experienced 
a temporary delay in replacing certain key components that had been lost or 
damaged in the July 1997 rainstorm in Fort Collins.

   The Company relies on sole and limited source suppliers for certain parts 
and subassemblies. Such reliance involves several risks, including a 
potential inability to obtain an adequate supply of required components, 
reduced control over pricing and timing of delivery of components and 
suppliers' potential inability to develop technologically advanced products 
to support the Company's growth and development of new systems. The Company 
believes that alternative sources could be obtained and qualified, if 
necessary, for most sole and limited source parts. 

DEPENDENCE ON DESIGN WINS; BARRIERS TO OBTAINING NEW CUSTOMERS; HIGH LEVEL OF 
CUSTOMIZED SYSTEMS

   Equipment manufacturers begin new system design projects periodically due 
to the constantly changing nature of semiconductor fabrication technology. It 
is important for the Company to work with these manufacturers early in their 
design cycle because it is common for modifications to the Company's 
equipment to be required to meet the requirements of the new system. As the 
design cycle nears completion, one or two vendors are chosen by the equipment 
manufacturer to provide the power conversion equipment to be used with the 
early system shipments. Being selected as one of these vendors is called a 
"design win." The Company believes that achieving these "design wins" is 
critical to 

                                     20
<PAGE>

retaining existing customers and to obtaining new customers. In order to 
achieve design wins, the Company typically must customize its systems for use 
in particular equipment and for particular customers. Such customization 
increases the Company's research and development expenses and can strain its 
engineering and management resources. In addition, there can be no assurance 
that such investment will result in design wins for the Company. Because a 
substantial proportion of the Company's business involves the just-in-time 
shipment of systems, the Company must keep a relatively large number and 
variety of customized systems in inventory. As the Company develops new 
systems and as its customers develop new products, systems in inventory may 
become obsolete. There can be no assurance that such inventory obsolescence 
will not have a material adverse effect on the Company's business, financial 
condition and results of operations. 

RAPID TECHNOLOGICAL CHANGE AND DEPENDENCE ON NEW SYSTEM INTRODUCTIONS

   The market for power conversion and control systems is characterized by 
ongoing technological developments and changing customer requirements. The 
markets in which the Company's customers compete are also characterized by 
continually evolving technology. The Company's success depends upon its 
ability to continue to improve existing systems and to develop and introduce 
new systems that keep pace with technological advances and adapt to support 
its customers' changing needs. There can be no assurance that the Company 
will continue to be able to improve its existing systems or develop new 
systems that will adequately address the changing needs of its customers and 
the marketplace.  Development and introduction of new systems may involve 
significant costs that are difficult to forecast. Failure of the Company to 
develop or introduce improved systems and new systems in a timely manner 
could have a material adverse effect on the Company's business, financial 
condition and results of operations, as well as on its customer 
relationships. 

COMPETITION

   The Company faces substantial competition, primarily from established 
companies, some of which have greater financial, marketing and technical 
resources than the Company. The trend toward consolidation in the 
semiconductor equipment industry has made it increasingly important to have 
the resources necessary to compete effectively across a broad range of 
product offerings, to fund customer service and support on a worldwide basis 
and to invest in research and development. The Company expects its 
competitors to continue to develop new products aimed at applications 
currently served by the Company, to continue to improve the design and 
performance of their systems, and to introduce new systems with competitive 
performance characteristics. To remain competitive, the Company believes it 
will be required to maintain a high level of investment in research and 
development and sales and marketing. In addition, new products developed by 
competitors could make pricing more competitive, which may necessitate 
significant price reductions by the Company or result in lost orders. In 
addition, electronics companies, including companies in the semiconductor 
capital equipment industry, have been characterized by ongoing pressure to 
reduce costs. 

                                     21

<PAGE>

RISKS ASSOCIATED WITH INTERNATIONAL SALES

   The markets in which the Company competes are becoming increasingly 
globalized. As a result, the Company's customers increasingly require service 
and support on a worldwide basis. The Company has invested substantial 
financial and management resources to develop an international infrastructure 
to meet the needs of its customers worldwide. The Company maintains sales and 
service offices outside the United States in Tokyo, Japan; Filderstadt, 
Germany; Bicester, United Kingdom; and Seoul, South Korea. There can be no 
assurance that the Company's investments will enable it to compete 
successfully in the international market or to meet the service and support 
needs of such customers. Approximately 29%, 24% and 25% of the Company's 
sales in 1995, 1996 and 1997, respectively, were attributable to customers 
outside the United States. The Company expects sales outside the United 
States to continue to represent a significant portion of future sales. Sales 
to customers outside the United States are subject to various risks, 
including exposure to currency fluctuations, the imposition of governmental 
controls, political and economic instability, trade restrictions, changes in 
tariffs and taxes, and longer payment cycles typically associated with 
international sales. The Company has entered into various forward foreign 
exchange contracts to mitigate the effect of depreciation of the Japanese 
yen; however, there can be no assurance that this or other hedging techniques 
can successfully protect the Company against substantial currency 
fluctuations. The Company has not employed hedging techniques with respect to 
any other currencies.

THE ASIAN FINANCIAL CRISIS

   In the third quarter of 1997 the economic conditions in several Asian 
countries began to deteriorate and those conditions were exacerbated in the 
fourth quarter. The Company realized approximately 10% of its 1997 revenue 
from sales to customers in Asia, including Japan. Many of the Company's key 
customers had a much greater concentration of their revenue in Asia. Until 
such time as the uncertainty is resolved the Company, directly and through 
its customers, could suffer material reductions in revenue. 

INTELLECTUAL PROPERTY RIGHTS

   The Company's success depends in large part on the technical innovation of 
its products. While the Company attempts to protect its intellectual property 
rights through patents and non-disclosure agreements, it believes that its 
success will depend to a greater degree upon innovation, technological 
expertise and its ability to adapt its products to new technology. There can 
be no assurance that the Company will be able to protect its technology or 
that competitors will not be able to develop similar technology 
independently. 

   Although the Company is not aware of any infringement by its products of 
any patents or proprietary rights of others, there can be no assurance that 
such infringements do not exist or will not occur in the future. Litigation 
may be necessary in the future to enforce patents issued to the Company, to 
protect trade secrets or know-how owned by the Company, to 

                                     22
<PAGE>

defend the Company against claimed infringement of the rights of others or to 
determine the scope and validity of the proprietary rights of others. Adverse 
determinations in such litigation could result in the Company's loss of 
proprietary rights, subject the Company to significant liabilities to third 
parties, require the Company to seek licenses from third parties or prevent 
the Company from manufacturing or selling its products, any of which could 
have a material adverse effect on the Company's business, financial condition 
and results of operations. 

VOLATILITY OF MARKET PRICE OF COMMON STOCK

   The stock market generally, and the market for technology stocks in 
particular, have experienced significant price and volume fluctuations, which 
have often been unrelated or disproportionate to the operating performance of 
such companies. From the initial public offering of the Common Stock in 
November 1995 through December 31, 1997, the closing price of the Common 
Stock on the Nasdaq National Market has ranged from $3.50 to $38.125. There 
can be no assurance that the market for the Common Stock will not be subject 
to similar fluctuations. Many factors, including future announcements 
concerning the Company or its competitors, variations in operating results, 
announcements of technological innovations, the introduction of new products 
or changes in product pricing policies by the Company or its competitors, 
changes in earnings estimates by securities analysts and general stock market 
trends, could cause the market price of the Common Stock to fluctuate 
substantially.
  
EXECUTIVE OFFICERS OF THE REGISTRANT

   The executive officers of the Company and their ages as of February 28, 
1998 are as follows:

<TABLE>
            NAME                   AGE                 POSITION
            ----                   ---                 --------
<S>                                <C>   <C>
    Douglas S. Schatz              52    President, Chief Executive Officer and
                                          Chairman of the Board
    G. Brent Backman               57    Vice President, Special Projects,
                                          Assistant Secretary and Director
    Eric A. Balzer                 49    Vice President, Operations
    Richard P. Beck                64    Vice President, Chief Financial Officer
                                          and Director
    Hollis L. Caswell, Ph.D.       66    Chief Operating Officer and Director
    James F. Gentilcore            45    Vice President, Sales and Marketing
    Timothy A. Kerr                37    Vice President, Engineering
    Susan C. Schell                48    Vice President, Quality and Human Resources
    Richard A. Scholl              58    Vice President and Chief Technology Officer
</TABLE>

- -----------
   DOUGLAS S. SCHATZ is a co-founder of the Company and has been its President
and Chief Executive Officer and a director since its incorporation in 1981. Mr.
Schatz also co-founded Energy Research Associates, Inc. and served as its Vice
President of Engineering from 1977 through 1980. Prior to co-founding Energy
Research Associates, Mr. Schatz held various engineering and management
positions at Applied Materials.

                                     23
<PAGE>

   G. BRENT BACKMAN is a co-founder of the Company and has been a Vice 
President and a director of the Company since its incorporation in 1981. Mr. 
Backman became Vice President, Special Projects in 1994. Prior to co-founding 
the Company, Mr. Backman was a Business Manager at Ion Tech, Inc. and a 
Laboratory Administrator at Hughes Aircraft Company.

   ERIC A. BALZER joined the Company in 1990 as Vice President, Operations. 
Prior to joining the Company, Mr. Balzer was Materials and Manufacturing 
Manager for the Systems Technology Division of IBM Corporation.

   RICHARD P. BECK joined the Company in 1992 as Vice President and Chief 
Financial Officer. He became a director of the Company in 1995. From 1987 to 
1992, Mr. Beck served as Executive Vice President and Chief Financial Officer 
of Cimage Corporation, a computer software company. Mr. Beck is also a 
director of Target Financial, Inc., a privately-held computer rental company.
  
   HOLLIS L. CASWELL, PH.D. joined the Board of Directors of the Company in 
February 1997 and joined the Company as Chief Operating Officer in May 1997. 
Dr. Caswell was Chairman of the Board and Chief Executive Officer of HYPRES, 
Inc., a manufacturer of superconducting electronics, from 1990 to 1994. From 
1984 to 1990, Dr. Caswell served as Senior Vice President of Unisys 
Corporation and President of such company's Computer Systems Group. He is a 
director of Thomas Group, Inc., a publicly traded consulting company.

   JAMES F. GENTILCORE joined the Company in 1996 as Vice President, Sales 
and Marketing. Prior to joining the Company, Mr. Gentilcore was Vice 
President, Marketing at MKS Instruments, Inc.

   TIMOTHY A. KERR joined the Company in 1987 as an engineer. In 1995, he 
became Director of Engineering and in August 1996, Vice President, 
Engineering. Prior to joining the Company, Mr.  Kerr was a member of the 
technical staff at Hughes Aircraft Company.
  
   SUSAN C. SCHELL joined the Company in 1984 as Human Resources Manager and 
became Vice President, Quality and Human Resources in 1991. Prior to joining 
the Company, Ms. Schell was a Management Advisory Services Consultant with 
Cady and Company, P.C.

   RICHARD A. SCHOLL joined the Company in 1988 as Vice President, 
Engineering. Mr. Scholl became Chief Technology Officer of the Company in 
1995. Prior to joining the Company, Mr. Scholl was General Manager, Vacuum 
Products Division at Varian Associates, Inc.

                                     24
<PAGE>

ITEM 2.  PROPERTIES

   The Company's headquarters and manufacturing facility are located in Fort 
Collins, Colorado, in approximately 190,000 square feet of leased space. The 
Company also maintains sales and service offices in Milpitas, California; 
Tokyo, Japan; Filderstadt, Germany; and Seoul, South Korea; and sales offices 
in Concord, Massachusetts; Austin, Texas; and Bicester, United Kingdom.
  
   In August 1997, the Company acquired 100% of the common stock of Tower 
Electronics, Inc. The headquarters, sales and service offices and 
manufacturing facilities of Tower are in Fridley, Minnesota.


ITEM 3.  LEGAL PROCEEDINGS

   The Company is not a party to any legal proceedings in the ordinary course 
of its business to the best of its knowledge. 


ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

   Not applicable.







                                     25
<PAGE>

PART II

ITEM 5.  MARKET PRICE FOR REGISTRANT'S COMMON STOCK AND RELATED STOCKHOLDER
    MATTERS

   Prior to November 17, 1995, there had been no public market for the 
Company's Common Stock. The Common Stock was approved for quotation on the 
Nasdaq Stock Market under the symbol AEIS, beginning November 17, 1995. At 
January 31, 1998, the number of common stockholders of record was 421.
  
   The range of high and low bid quotations for the Company's Common Stock as 
quoted (without retail markup or markdown and without commissions) on the 
Nasdaq Stock Market since its initial public offering is provided below. They 
do not necessarily represent actual transactions:

<TABLE>
                                         High Bid   Low Bid
                                         --------   -------
<S>                                      <C>        <C>
          1995 Fiscal Year
          ----------------
             Fourth Quarter 
              (from November 17)          11         8-1/4

          1996 Fiscal Year
          ----------------
             First Quarter                10         6-1/2
             Second Quarter                9-1/8     5-3/4
             Third Quarter                 7-3/4     4-1/2
             Fourth Quarter                7-1/4     2-7/8
                                           
          1997 Fiscal Year                 
          ----------------
             First Quarter                 8-3/8     5-1/4
             Second Quarter               15-3/8     7-1/8
             Third Quarter                33-3/8    14-1/2
             Fourth Quarter               38-1/8    12-1/4
</TABLE>

   The Company has not declared or paid any cash dividends on its capital 
stock since it terminated its election to be treated as an S corporation for 
tax purposes, effective January 1, 1994. The Company currently intends to 
retain all future earnings to finance its business. Accordingly, the Company 
does not anticipate paying cash or other dividends on its Common Stock in the 
foreseeable future. Furthermore, the Company's revolving credit facility 
prohibits the declaration or payment of any cash dividends on the Common 
Stock.

                                      26
<PAGE>

ITEM 6.  SELECTED CONSOLIDATED FINANCIAL DATA

   The following selected consolidated financial data is qualified by 
reference to, and should be read in conjunction with, the Company's 1997 
Consolidated Financial Statements and notes thereto and the discussion 
thereof included elsewhere in this Form 10-K. The selected consolidated 
statements of operations for the years ended December 31, 1995, 1996 and 1997 
and the related consolidated balance sheet data as of and for the years ended 
December 31, 1996 and 1997 derived from consolidated financial statements 
have been audited by Arthur Andersen LLP, independent accountants, whose 
report with respect thereto is included elsewhere in this Form 10-K. The 
selected consolidated statements of operations data for the years ended 
December 31, 1993 and 1994, and the related consolidated balance sheet data 
as of December 31, 1993, 1994 and 1995 have been derived from audited 
consolidated financial statements of the Company not included in this Form 
10-K.

<TABLE>
                                                   YEARS ENDED DECEMBER 31,
                                                   ------------------------
                                        1997      1996      1995      1994      1993
                                        ----      ----      ----      ----      ----
                                              (IN THOUSANDS, EXCEPT SHARE DATA)
<S>                                   <C>        <C>       <C>       <C>       <C>
STATEMENT OF OPERATIONS DATA:
Sales                                 $141,923   $98,852   $94,708   $51,857   $31,577
Gross profit                            54,385    36,814    45,394    25,814    15,248
Total operating expenses                37,380    28,603    23,916    15,811    11,547
Income from operations                  17,005     8,211    21,478    10,003     3,701
Net income                            $ 10,362   $ 5,144   $13,281   $ 5,963   $ 3,417
                                      --------   -------   -------   -------   -------
                                      --------   -------   -------   -------   -------
Diluted earnings per share            $   0.47   $  0.24   $  0.69   $ 0.32
Pro forma net income(1)                                                        $ 2,054
                                                                               -------
                                                                               -------
</TABLE>

<TABLE>
                                                        DECEMBER 31,
                                                        ------------
                                        1997      1996      1995      1994      1993
                                        ----      ----      ----      ----      ----
                                                       (IN THOUSANDS)
<S>                                   <C>        <C>       <C>       <C>       <C>
BALANCE SHEET DATA:
Working capital                       $ 66,708   $35,179   $33,749   $ 7,773   $ 3,587
Total assets                           112,243    56,031    55,319    23,149    13,389
Total debt                               3,320     2,051     2,484     9,946     8,459
Stockholders' equity                    87,348    46,496    41,087     7,218     1,011
</TABLE>

- ------------
(1) In 1993, the Company was treated as an S corporation for tax purposes. The
    Company terminated its election to be treated as an S corporation effective
    as of January 1, 1994. Pro forma information assumes federal, state and
    foreign income tax rates aggregating 40.0%. See Note 10 of Notes to
    Consolidated Financial Statements.

                                       27
<PAGE>

ITEM 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS

   The following discussion contains, in addition to historical information, 
forward-looking statements, within the meaning of Section 27A of the 
Securities Act of 1933, as amended, and Section 21E of the Securities 
Exchange Act of 1934, as amended. Such forward-looking statements involve 
risks and uncertainties. As a result, the Company's actual results may differ 
materially from the results discussed in the forward-looking statements. 
Factors that could cause or contribute to such differences include, but are 
not limited to, those discussed below.

  In particular, the Company believes that the following factors could impact 
forward-looking statements made herein or in future written or oral releases 
and by hindsight, prove such statements to be overly optimistic and 
unachievable: volatility of the semiconductor and semiconductor equipment 
industries, customer concentration, dependence on design wins, rapid 
technological change and dependence on new system introduction, competition, 
and management of growth.

OVERVIEW

   The Company designs, manufactures, markets and supports power conversion 
and control systems used in industrial processes. The Company's systems are 
key elements in products that utilize gaseous plasmas to deposit or etch thin 
film layers on materials or substrates such as silicon, glass and metals. The 
Company commenced operations in 1981 and has been profitable each year since 
its inception. The Company markets and sells its systems primarily to 
original equipment manufacturers (OEMs) of semiconductor, flat panel display, 
data storage and other industrial thin film manufacturing equipment, and OEMs 
of the telecommunications, medical and non-impact printing industries. A 
substantial and increasing proportion of the Company's sales are made on a 
"just-in-time" basis in which the shipment of systems occurs within a few 
days or hours after an order is received. The Company recognizes revenues, 
which are derived from the sales of power conversion and control systems, 
upon shipment of its systems.

   The semiconductor equipment industry accounted for approximately 64% of 
the Company's sales in 1996 and 58% in 1997. The Company has benefited from 
strong growth in the semiconductor equipment industry in recent years until 
the industry growth stopped in mid-1996, but recovered in the second half of 
1997. The largest customer of the Company is also the largest semiconductor 
equipment manufacturer. Sales to the data storage market increased 
significantly in 1997 when compared to 1996, but sales to industrial markets 
were flat during this same period. The Company experienced a decline in sales 
to the flat panel display market in 1996, primarily in Japan, but recovered 
in 1997 to a level higher than 1995. In connection with the acquisition of 
Tower Electronics, Inc. ("Tower") the Company now has products manufactured 
for use in the 

                                       28
<PAGE>

telecommunications, laser and non-impact printing industries. The future 
success of the Company depends primarily on continued growth of the 
semiconductor equipment industry, data storage industry, and flat panel 
display industry. To date, the Company has been successful in achieving a 
number of "design wins" which have resulted in the Company obtaining new 
customers and solidifying relationships with its existing customers. The 
Company believes that its ability to continue to achieve design wins with 
existing and new customers will be critical to its future success.

   In response to the high rate of growth in 1995 and anticipated growth 
during 1996, the Company made substantial investments in infrastructure such 
as information technology, facilities, and in worldwide sales and support in 
1996, which caused operating expenses to increase. This, combined with the 
slower growth in the semiconductor equipment industry, resulted in reduced 
operating margins in 1996. Margins improved in 1997 when the semiconductor 
equipment industry rebounded and returned to growth more in line with 
historical experience.
  
   Several events occurred during 1997 that affected and may continue to 
influence the Company's operations into 1998. The Company sustained damage to 
its manufacturing facilities and certain equipment during a severe rainstorm 
on July 29, 1997, which reduced production capacity during the following 
several months. On August 15, 1997, the Company purchased all of the 
outstanding stock of Tower Electronics, Inc. ("Tower"), a privately-held 
Minnesota-based manufacturer of custom, low-power power supplies used 
principally in the telecommunications, medical and non-impact printing 
markets. In October 1997, the Company completed an underwritten public 
offering of 1,000,000 shares of common stock at a price of $31 per share, for 
aggregate net proceeds of approximately $28.7 million. In October 1997, the 
Company completed formation of its 100%-owned sales and service subsidiary in 
South Korea.

YEAR 2000 

   Computer programs that rely on two-digit date codes to perform 
computations and decision-making functions may cause computer systems to 
malfunction due to an inability of such programs to interpret the date code 
"00" as the year 2000. Advanced Energy has conducted an initial assessment of 
its internal exposure to the Year 2000 problem and believes that its recently 
installed enterprise-wide software system is Year 2000 compliant. Such belief 
is based significantly on discussions with and representations by the vendor 
of such software. The Company intends to conduct its own evaluations and 
testing of such software system and is currently involved in a project to 
ensure that its ancillary software and hardware are Year 2000 compliant. The 
Company expects to complete these projects during the second and third 
quarters of 1998. The Company does not expect the costs associated with such 
projects to have a material effect on the Company's financial results.

   Advanced Energy also may be vulnerable to other companies' Year 2000 
issues. The Company's current estimates of the impact of the Year 2000 
problem on its operations 

                                       29
<PAGE>

and financial results do not include costs and time that may be incurred as a 
result of any vendors' or customers' failures to become Year 2000 compliant 
on a timely basis. The Company has initiated formal communications with all 
of its significant vendors and customers with respect to such persons' Year 
2000 compliance programs and status. However, there can be no assurance that 
such other companies will achieve Year 2000 compliance or that any 
conversions by such companies to become Year 2000 compliant will be 
compatible with the Company's computer systems.

   The inability of the Company or any of its principal vendors or customers 
to become Year 2000 compliant in a timely manner could have a material 
adverse effect on the Company's financial condition or results of operations.

   The foregoing beliefs and expectations are forward-looking statements 
within the meaning of Section 27A of the Securities Act and Section 21E of 
the Exchange Act, and are based in large part on certain statements and 
representations made by persons outside the Company, any of which statements 
or representations ultimately could prove to be inaccurate.

RESULTS OF OPERATIONS

   The following table sets forth certain statement of operations data of the 
Company expressed as a percentage of sales:

<TABLE>
                                                         YEARS ENDED DECEMBER 31,
                                                       ---------------------------
                                                        1997       1996      1995
                                                       ------     ------    ------
<S>                                                    <C>        <C>       <C>
Sales                                                  100.0%     100.0%    100.0%
Cost of sales                                           61.7       62.8      52.1
                                                       ------     ------    ------
Gross margin                                            38.3       37.2      47.9
                                                       ------     ------    ------
Operating expenses:
  Research and development                              10.4       13.9      11.1
  Sales and marketing                                    6.7        8.7       6.5
  General and administrative                             5.1        6.3       7.6
  Storm damage, net of insurance reimbursement           1.9        0.0       0.0
  Purchased in-process research and development          2.2        0.0       0.0
                                                       ------     ------    ------
Total operating expenses                                26.3       28.9      25.2
                                                       ------     ------    ------
Income from operations                                  12.0        8.3      22.7
Other income (expense)                                   0.0        0.1      (0.4)
                                                       ------     ------    ------
Net income before income taxes                          12.0        8.4      22.3
Provision for income taxes                               4.7        3.2       8.3
                                                       ------     ------    ------
Net income                                               7.3%       5.2%     14.0%
                                                       ------     ------    ------
                                                       ------     ------    ------
</TABLE>


   SALES

   Sales were $94.7 million, $98.9 million and $141.9 million in 1995, 1996 
and 1997, respectively, representing an increase of 4% from 1995 to 1996 and 
44% from 1996 to 1997. The Company's sales growth during all periods 
presented has resulted from the increased unit sales of the Company's 
systems. A significant part of this growth during 1996 is attributable to 
increased sales to domestic customers and to customers in Europe, 

                                      30
<PAGE>

offset by a 46% decrease in Japan sales when compared to 1995, which were 
primarily to the flat panel display market. In 1995 the Company sold 
subsystems in Japan to replace subsystems originally provided by competitors. 
That retrofit program was completed in 1995. A substantial portion of the 
Company's sales growth since 1995 is attributable to higher system sales to 
the Company's two largest customers, both of whom are primarily semiconductor 
equipment OEMs. Sales to this industry increased 35% from 1996 to 1997, while 
sales to data storage equipment OEMs increased 53% during the same period.

   Sales to international customers, primarily in Japan, Asia and Europe, 
were approximately $27.3 million, $24.0 million, and $36.0 million in 1995, 
1996 and 1997, respectively. These amounts represented 29%, 24% and 25% of 
sales for those periods. During these periods, sales in Japan were primarily 
to flat panel display and data storage equipment manufacturers and sales in 
Europe were primarily to data storage equipment manufacturers.

   GROSS MARGIN

   The Company's gross margins were 47.9%, 37.2% and 38.3% for 1995, 1996 and
1997, respectively. Major factors causing the decrease in gross margin from 1995
to 1996 were generally higher material costs and other costs associated with
continued outsourcing efforts in the first half of 1996, and underabsorption of
manufacturing overhead due to lower sales in the second half of 1996. Sales for
the first six months of 1996 were $57.0 million versus sales of $43.0 million in
the comparable period in 1995, an increase of 33%, while sales in the last six
months of 1996 were $41.9 million versus sales of $51.7 million for the
comparable period in 1995, a decrease of 19%. Additionally, gross margin was
negatively impacted throughout 1996 by a shift in product mix toward products on
which material costs increased as a percentage of sales and by increased
customer service costs. The increase in gross margin from 1996 to 1997 was
primarily due to lower infrastructure costs associated with cost of goods sold
and decreased material costs as a percentage of sales. Other cost improvements,
as a percentage of sales, were achieved to a lesser extent in labor and customer
support costs largely because of the higher 1997 base resulting from the
recovery in the semiconductor equipment industry in the second quarter of 1997.
These improvements were partially offset by a less favorable absorption of
manufacturing overhead costs. The underabsorption of manufacturing overhead may
continue to negatively impact gross margin should future sales levels decline.

   During the periods presented, the average selling price per unit has 
remained relatively constant. Historically, price competition has not had a 
material effect on margins. However, competitive pressures may produce a 
decline in average selling prices for certain products. Any material decline 
in average selling prices not offset by reduced costs could result in a 
material decline in the Company's gross margins.

   The Company provides warranty coverage for its systems ranging from 12 to 
24 

                                      31
<PAGE>

months. The Company estimates the anticipated costs of repairing its systems 
under such warranties based on the historical average costs of the repairs. 
To date, the Company has not experienced significant warranty costs in excess 
of its recorded reserves.

   RESEARCH AND DEVELOPMENT

   The Company's research and development costs are associated with 
researching new technologies, developing new products and improving existing 
product designs. Research and development expenses were $10.5 million, $13.8 
million and $14.8 million for 1995, 1996 and 1997, respectively, representing 
an increase of 31% from 1995 to 1996 and 7% from 1996 to 1997. As a 
percentage of sales, research and development expenses increased from 11.1% 
in 1995 to 13.9% in 1996, but decreased to 10.4% in 1997 as a result of the 
higher sales base. The increase in expenses from 1995 to 1997 is primarily 
associated with increases in payroll and outside service costs incurred for 
new product development.
  
   In connection with the acquisition of Tower on August 15, 1997, the 
Company recorded a one-time charge of $3.1 million in 1997 for the portion of 
the purchase price attributable to in-process research and development, not 
included in the $14.8 million reported for research and development expense.

   The Company believes that continued research and development investment is 
essential to ongoing development of new products. Since inception, all 
research and development costs have been internally funded and expensed when 
incurred.

   SALES AND MARKETING

   Sales and marketing expenses support domestic and international sales and 
marketing activities which include personnel, trade shows, advertising, and 
other marketing activities. Sales and marketing expenses were $6.2 million, 
$8.6 million and $9.6 million for 1995, 1996 and 1997, respectively. This 
represented a 39% increase from 1995 to 1996 and an 11% increase from 1996 to 
1997. The increases are attributable to higher payroll, promotional 
materials, depreciation and travel costs associated with expansion to support 
the increase in sales volume. As a percentage of sales, these expenses 
increased from 6.5% in 1995 to 8.7% in 1996, but decreased to 6.7% in 1997 as 
a result of the higher sales base.

   The Company continues to reorganize its sales and marketing team to better 
address the specific needs of its customers. Sales and marketing expenses are 
expected to continue to increase in future periods.
 
   GENERAL AND ADMINISTRATIVE

   General and administrative expenses support the worldwide financial, 
administrative, information systems and human resources functions of the 
Company. General and 

                                      32
<PAGE>

administrative expenses were $7.2 million, $6.3 million and $7.3 million for 
1995, 1996 and 1997, respectively. The decrease in general and administrative 
expenses from 1995 to 1996 was due primarily to a reduction in accrued 
bonuses and other employee benefits made in 1996 as part of the Company's 
cost reduction efforts, which were one-time reductions. Of the increase from 
1996 to 1997 of $1.0 million, $0.7 million was due to the inclusion of Tower, 
of which $0.4 million was for amortization of goodwill resulting from the 
purchase. As a percentage of sales, general and administrative expenses were 
7.6%, 6.3% and 5.1% for 1995, 1996 and 1997, respectively. The overall 
decrease as a percentage of sales from 1995 to 1997 is attributable to the 
Company's effort to maintain a level of general and administrative costs that 
do not increase at the same rate as sales. 
  
   The Company continues to implement its new information management system 
software throughout the Company, including the replacement of existing 
systems in its foreign locations. The Company expects that charges related to 
training and implementation of the new software will continue through 1998, 
particularly for the foreign locations.

   ONE-TIME CHARGES
 
   The Company took one-time net charges totaling $5.8 million in 1997. A net 
charge of $2.7 million was taken for storm damage to the Company's 
headquarters and main manufacturing facilities that resulted from heavy rains 
in the Fort Collins area on July 29, 1997. The final extent of insurance 
coverage, if any, is unresolved, although the Company has received and 
recorded $0.3 million of proceeds to date. Any additional recoveries from the 
Company's insurance will likewise be recorded when received.
  
   As discussed above in "Research and Development," the acquisition of Tower 
resulted in a charge of $3.1 million for purchased in-process research and 
development, which is non-deductible for income tax purposes.

   OTHER INCOME (EXPENSE)

   Other income consists primarily of interest income and expense, foreign 
exchange gains and losses and other miscellaneous income and expense items. 
Interest income was approximately $0.1 million, $0.5 million and $0.5 million 
for the years 1995, 1996 and 1997, respectively. The higher amounts in 1996 
and 1997 were due primarily to earnings on investments made from the proceeds 
of the initial public offering in November 1995 and the underwritten public 
offering in October 1997.
  
   Interest expense consists principally of borrowings under the Company's 
bank credit and capital lease facilities and was approximately $0.6 million, 
$0.2 million and $0.3 million for the years 1995, 1996 and 1997, 
respectively. The decrease of interest expense from 1995 to 1996 was 
primarily a result of repayments of equipment loans and less borrowing due to 
the availability of working capital provided from the proceeds of the 
Company's initial public offering in November 1995. The increase of interest 
expense 

                                      33
<PAGE>

from 1996 to 1997 was primarily due to a short-term loan used to finance the 
acquisition of Tower, which was repaid with the proceeds from the 
underwritten public offering in October 1997.

   Approximately 91% of the Company's foreign subsidiaries' sales are 
denominated in currencies other than the U.S. dollar. An increase in the 
value of the German deutsche mark of 7% and a decrease in the value of the 
Japanese yen of 4% resulted in essentially no foreign exchange gain or loss 
in 1995. During 1996 the Company recorded a net foreign exchange loss of $0.4 
million primarily as a result of a 12% decrease in the value of the yen. 
During the second half of 1996 the Company began to enter into various 
forward foreign exchange contracts to mitigate the effect in depreciation in 
the yen. During 1997, the Company recorded a net foreign currency gain of 
$0.1 million. The Company continues to evaluate various policies to minimize 
the effect of foreign currency fluctuations.
 
   PROVISION FOR INCOME TAXES

   The income tax provision of $7.8 million in 1995 represented a 37.0% 
effective tax rate. The income tax provision of $3.2 million for 1996 
represented an effective rate of 38.1%. The increase in the Company's tax 
rate from 1995 to 1996 is primarily attributed to a higher effective state 
tax rate resulting from a larger proportion of the Company's sales being 
shipped to higher tax rate jurisdictions, particularly California. The income 
tax provision of $6.7 million for 1997 represented an effective rate of 
39.2%. The increase in the Company's tax rate from 1996 to 1997 is primarily 
attributed to certain one-time charges in 1997 which were not deductible, 
including the $3.1 million one-time charge for purchased in-process research 
and development associated with the acquisition of Tower. Changes in the 
relative earnings of the Company and its foreign subsidiaries affect the 
Company's consolidated effective tax rate. To the extent that a larger 
percentage of taxable earnings are derived from the Company's foreign 
subsidiaries whose tax rates are higher than domestic tax rates, the Company 
could experience a higher consolidated effective tax rate than the historical 
rates the Company experienced before 1997. The Company adjusts its income 
taxes periodically based upon the anticipated tax status of all foreign and 
domestic entities.

QUARTERLY RESULTS OF OPERATIONS

   The following table presents unaudited quarterly results in dollars and as 
a percentage of sales for the eight quarters ended December 31, 1997. The 
Company believes that all necessary adjustments, consisting only of normal 
recurring adjustments, have been included in the amounts stated below to 
present fairly such quarterly information. The operating results for any 
quarter are not necessarily indicative of results for any subsequent period.


                                      34

<PAGE>
<TABLE>
                                                                       QUARTERS ENDED
                                     --------------------------------------------------------------------------------------- 
                                     MAR. 31,   JUNE 30,  SEPT. 30,   DEC. 31,   MAR. 31,   JUNE 30,   SEPT. 30,    DEC. 31, 
                                      1996        1996      1996       1996       1997       1997       1997         1997    
                                     --------   --------  ---------   --------   --------   --------   ---------    -------- 
<S>                                  <C>        <C>       <C>         <C>        <C>        <C>        <C>          <C>
                                                              (IN THOUSANDS, EXCEPT PER SHARE DATA)
Sales                                $27,166    $29,831    $21,639    $20,216    $20,667    $32,690    $42,571      $45,995  
Cost of sales                         17,035     17,204     15,047     12,752     13,158     20,139     25,538       28,703  
                                     -------    -------    -------    -------    -------    -------    -------      -------  
Gross profit                          10,131     12,627      6,592      7,464      7,509     12,551     17,033       17,292
                                     -------    -------    -------    -------    -------    -------    -------      -------  
Operating expenses:
  Research and development             3,498      3,645      3,349      3,268      2,821      3,513      4,072        4,345
  Sales and marketing                  2,083      2,248      2,201      2,058      1,799      2,336      2,329        3,101
  General and administrative           1,725      2,330        933      1,265      1,248      1,702      1,943        2,391
  Storm damage                            --         --         --         --         --         --      3,000         (300)
  Purchased in-process research and
    development                           --         --         --         --         --         --      3,080           --
                                     -------    -------    -------    -------    -------    -------    -------      -------  
Total operating expenses               7,306      8,223      6,483      6,591      5,868      7,551     14,424        9,537
                                     -------    -------    -------    -------    -------    -------    -------      -------  
Income from operations                 2,825      4,404        109        873      1,641      5,000      2,609        7,755
Other (expense) income                  (170)       (66)        97        232       (387)       286         54           73
                                     -------    -------    -------    -------    -------    -------    -------      -------  
Net income before income taxes         2,655      4,338        206      1,105      1,254      5,286      2,663        7,828
Provision for income taxes               982      1,676         83        419        489      1,996      2,146        2,038
                                     -------    -------    -------    -------    -------    -------    -------      -------  
Net income                           $ 1,673    $ 2,662    $   123    $   686    $   765    $ 3,290    $   517      $ 5,790
                                     -------    -------    -------    -------    -------    -------    -------      -------  
                                     -------    -------    -------    -------    -------    -------    -------      -------  
Diluted earnings per share           $  0.08    $  0.12    $  0.01    $  0.03    $  0.04    $  0.15    $  0.02      $  0.25
                                     -------    -------    -------    -------    -------    -------    -------      -------  
                                     -------    -------    -------    -------    -------    -------    -------      -------  
Weighted-average number of
 shares and share equivalents         21,794     21,653     21,622     21,728     21,735     21,877     22,372       23,112
                                     -------    -------    -------    -------    -------    -------    -------      -------  
                                     -------    -------    -------    -------    -------    -------    -------      -------  

<CAPTION>
                                                                       QUARTERS ENDED
                                     --------------------------------------------------------------------------------------- 
                                     MAR. 31,   JUNE 30,  SEPT. 30,   DEC. 31,   MAR. 31,   JUNE 30,   SEPT. 30,    DEC. 31, 
                                      1996        1996      1996       1996       1997       1997       1997         1997    
                                     --------   --------  ---------   --------   --------   --------   ---------    -------- 
<S>                                  <C>        <C>       <C>         <C>        <C>        <C>        <C>          <C>
PERCENTAGE OF SALES:
Sales                                 100.0%     100.0%     100.0%     100.0%     100.0%     100.0%     100.0%       100.0%  
Cost of sales                          62.7       57.7       69.5       63.1       63.7       61.6       60.0         62.4   
                                      -----      -----      -----      -----      -----      -----      -----        -----   
Gross margin                           37.3       42.3       30.5       36.9       36.3       38.4       40.0         37.6   
                                      -----      -----      -----      -----      -----      -----      -----        -----   
Operating expenses:
  Research and development             12.9       12.2       15.5       16.2       13.7       10.8        9.6          9.4   
  Sales and marketing                   7.7        7.5       10.2       10.2        8.7        7.1        5.5          6.7   
  General and administrative            6.3        7.8        4.3        6.2        6.0        5.2        4.6          5.2   
  Storm damage                           --         --         --         --         --         --        7.0         (0.6)  
  Purchased in-process research and
    development                          --         --         --         --         --         --        7.2           --  
                                      -----      -----      -----      -----      -----      -----      -----        -----   
Total operating expenses               26.9       27.5       30.0       32.6       28.4       23.1       33.9         20.7  
                                      -----      -----      -----      -----      -----      -----      -----        -----   
Income from operations                 10.4       14.8        0.5        4.3        7.9       15.3        6.1         16.9  
Other (expense) income                 (0.6)      (0.3)       0.5        1.2       (1.8)       0.9        0.2          0.1  
                                      -----      -----      -----      -----      -----      -----      -----        -----   
Net income before income taxes          9.8       14.5        1.0        5.5        6.1       16.2        6.3         17.0  
Provision for income taxes              3.6        5.6        0.4        2.1        2.4        6.1        5.1          4.4  
                                      -----      -----      -----      -----      -----      -----      -----        -----   
Net income                              6.2%       8.9%       0.6%       3.4%       3.7%      10.1%       1.2%        12.6% 
                                      -----      -----      -----      -----      -----      -----      -----        -----   
                                      -----      -----      -----      -----      -----      -----      -----        -----   
</TABLE>


  The Company has experienced and expects to continue to experience significant
fluctuations in its quarterly operating results. The Company's expense levels
are based, in part, on expectations of future revenues. If revenue levels in a
particular quarter do not meet expectations, operating results may be adversely
affected. A variety of factors have an influence on the level of the Company's
revenues in a particular quarter. These factors include general economic
conditions, specific economic conditions in the industries the Company serves,
the timing of the receipt of orders from major customers, customer cancellations
or delay of shipments, specific feature requests by customers, production delays
or manufacturing inefficiencies, exchange rate fluctuations, management
decisions to commence or discontinue product lines, the Company's ability to
design, introduce and manufacture new products on a cost effective and timely
basis, the introduction of new products by the Company or its competitors, the
timing of research and development expenditures, and expenses related to
acquisitions, strategic alliances, and the further 


                                      35

<PAGE>

development of marketing and service capabilities.

  A substantial portion of the Company's shipments are made on a "just-in-time"
basis in which shipment of systems occurs within a few days or hours after an
order is received. The Company's backlog is not meaningful because of the
importance of "just-in-time" shipments. The Company is dependent on obtaining
orders for shipment in a particular quarter to achieve its revenue objectives
for that quarter. Accordingly, it is difficult for the Company to predict
accurately the timing and level of sales in a particular quarter. Due to its
"just-in-time" program, the Company anticipates quarterly fluctuations in sales
will continue to occur.
  
  The Company's quarterly operating results in 1996 and 1997 reflect the
changing demand for the Company's products during this period, principally from
manufacturers of semiconductor equipment and data storage equipment, and the
Company's ability to quickly adjust its manufacturing capacity to meet this
demand. Demand from the semiconductor equipment companies was significantly
lower from the third quarter of 1996 until the second quarter of 1997. In the
second quarter of 1997, the semiconductor equipment market began a major
recovery which continued throughout 1997, and sales to the data storage
equipment market also experienced significant growth. Sales during the fourth
quarter of 1997 increased 8% from the third quarter of 1997 primarily as a
result of the inclusion of revenues from Tower. This increase was offset by a
significant drop in sales in Japan from the third quarter of 1997 to the fourth
quarter of 1997.
  
  The Company's gross margin fluctuated significantly on a quarterly basis in
1996 and 1997, primarily reflecting utilization of manufacturing capacity.
Average selling prices remained relatively constant throughout the periods
presented. The increase in gross margin from 37.3% in the first quarter of 1996
to 42.3% in the second quarter of 1996 resulted from a number of factors which
resulted in decreased component costs. The reduction in gross margin to 30.5% in
the third quarter of 1996 was primarily the result of underabsorbed fixed
manufacturing costs from reduced revenue, as revenues in the third quarter of
1996 were $8.2 million lower than in the second quarter of 1996. Additionally,
gross margin was negatively impacted by a shift in product mix toward products
on which material costs as a percentage of sales were higher than the previous
quarter. Increased customer service costs, as a percentage of sales, also
contributed to the lower gross margin. The improvement in gross margin to 36.9%
in the fourth quarter of 1996 was attributable primarily to a favorable product
mix, decreased direct material costs and decreased customer service costs. The
improvement in gross margin to 38.4% in the second quarter of 1997 and 40.0% in
the third quarter of 1997 was primarily the result of a more favorable
absorption of manufacturing overhead resulting from a 58% increase in sales from
the first quarter of 1997 to the second quarter of 1997. Beginning August 15,
1997, the Company's operating results included Tower. The Company returned to
full production in the fourth quarter of 1997, during which time gross margin
declined to 37.6%. This decrease was primarily attributed to higher customer
service costs and higher cost of goods sold as a percentage of sales for Tower.


                                      36

<PAGE>

  The Company's operating expenses increased on a quarterly basis through the
first half of 1996. Since the fourth quarter of 1995, operating expenses have
included additional legal and administrative expenses as a result of being a
publicly held company. Additionally, the Company has expensed costs incurred for
consultants used in the implementation of a new information management system
software. The Company expects expenses related to the implementation of the
software to continue through 1998 as additional phases are implemented,
including integration of the information systems of the Company's international
subsidiaries. Quarterly decreases of operating expenses in the second half of
1996 and the first quarter of 1997 reflected a companywide restructuring and the
implementation of cost containment measures started in the third quarter of 1996
to react to the significant decrease in demand, primarily from semiconductor
equipment companies. The increases in operating expenses during the remaining
quarters of 1997 reflected costs in support of higher sales resulting from the
recovery in the semiconductor equipment industry and increases in sales to the
data storage industry in the second and third quarters of 1997. Operating
expenses of $14.4 million in the third quarter of 1997 would have been $8.3
million if not for the one-time charges of $6.1 million. As a percentage of
sales, operating expenses have declined during periods of rapid sales growth,
when sales increased at a rate faster than the Company's ability to add
personnel and facilities to support the growth, and increased during periods of
flat or decreased sales, when the Company's infrastructure is retained to
support anticipated future growth or from non-recurring charges associated with
downsizing.

  Other income (expense) consists primarily of interest income and expense and
foreign currency gain and loss. The net foreign exchange loss of $0.4 million in
1996 was recognized during the first and fourth quarters of 1996, with
essentially no gain or loss in the second and third quarter. During 1997, the
Company recorded a net foreign exchange gain of $0.1 million. The Company
continues to utilize forward foreign exchange contracts in Japan to mitigate the
effects of foreign currency fluctuations.
  
  The Company's provision for income taxes remained relatively stable in 1996,
ranging from 37.0% to 40.3%,  but fluctuated significantly in 1997. An effective
income tax rate of 80.6% in the third quarter of 1997 was due primarily to the
one-time non-deductible charge of $3.1 million for the purchased in-process
research and development associated with the acquisition of Tower. An effective
income tax rate of 26.0% in the fourth quarter of 1997 was due primarily to a
revised estimate resulting in a favorable adjustment to previously-accrued
income taxes in Japan. The first and second quarters of 1997 had effective
income tax rates of 39.0% and 37.8%, respectively, closer to historical rates.


LIQUIDITY AND CAPITAL RESOURCES

  Since its inception, the Company has financed its operations, acquired
equipment and met its working capital requirements through borrowings under its
revolving line of credit, long-term loans secured by property and equipment and
cash flow from 


                                      37

<PAGE>

operations, and, from November 1995, proceeds from underwritten public 
offerings.

  Cash provided by operations totaled $3.3 million in 1996. In 1996, net income,
depreciation, amortization and decreases in inventory were partially offset by
increases in accounts receivable and decreases in accounts payable. Cash
provided by operations totaled $8.1 million in 1997, of which major factors were
net income, depreciation, amortization, purchased in-process research and
development, and increases in accounts payable, offset by increases in accounts
receivable and inventories. The Company expects future receivable and inventory
balances to fluctuate with net sales. The Company provides "just-in-time"
deliveries to certain of its customers and may be required to maintain higher
levels of inventory to satisfy its customers' delivery requirements.

  Investing activities in 1996 used cash of $5.1 million and consisted of
equipment acquisitions. Investing activities in 1997 used cash of $38.2 million
and consisted of the acquisition of Tower for $13.0 million, the purchase of
marketable securities of $20.0 million and the purchase of property and
equipment of $5.2 million.
  
  Financing activities used cash of $0.3 million in 1996, and consisted
primarily of net proceeds of notes payable to finance equipment of $1.6 million,
offset by repayments of notes payable and capital lease obligations.
  
  In October 1997, the Company completed an underwritten public offering of
1,000,000 shares of common stock at a price of $31 per share, for aggregate net
proceeds of approximately $28.7 million. The Company used $12.0 million of the
net proceeds to repay a $12.0 million term loan used to finance the acquisition
of Tower, and incurred a prepayment penalty of approximately $90,000. The
remaining proceeds were added to the Company's working capital to finance future
business needs.
  
  In 1997, financing activities provided cash of $30.5 million and consisted
primarily of the net proceeds of $28.7 million from the underwritten public
offering. Long-term loans secured by property and equipment were $1.5 million in
1996 and were paid off in 1997.

  The Company plans to spend approximately $6.0 million through 1998 for the
acquisition of equipment, leasehold improvements and furnishings.

  As of December 31, 1997, the Company had working capital of $66.7 million. The
Company's principal sources of liquidity consisted of $11.5 million of cash and
cash equivalents, $20.2 million of marketable securities, and a credit facility
consisting of a $30.0 million revolving line of credit which replaced the
Company's prior line of credit, with options to convert up to $10.0 million to a
three-year term loan. Advances under the new revolving line of credit bear
interest at either the prime rate (8.5% at January 31, 1998) minus 1.25% or the
LIBOR 360-day rate (5.65625% at January 31, 1998) plus 150 basis points, at the
Company's option. All advances under the revolving line of credit will be due
and payable in December 2000; however, there were no advances outstanding as of
December 31, 1997.


                                      38

<PAGE>

  The Company believes that its cash and cash equivalents, cash flow from
operations and available borrowings, will be sufficient to meet the Company's
working capital needs through at least the end of 1998. After that time, the
Company may require additional equity or debt financing to address its working
capital, capital equipment, or expansion needs. In addition, any significant
acquisitions by the Company may require additional equity or debt financings to
fund the purchase price, if paid in cash. There can be no assurance that
additional funding will be available when required or that it will be available
on terms acceptable to the Company.




























                                      39

<PAGE>

ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA


                     INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

                                                                            PAGE
                                                                            ----
  Report of Arthur Andersen LLP, Independent Public Accountants              41
  Consolidated Balance Sheets as of December 31, 1997 and 1996               42
  Consolidated Statements of Income for the Years Ended December 31, 
    1997, 1996 and 1995                                                      44
  Consolidated Statements of Stockholders' Equity for the Years Ended 
    December 31, 1997, 1996 and 1995                                         45
  Consolidated Statements of Cash Flows for the Years Ended 
    December 31, 1997, 1996 and 1995                                         46
  Notes to Consolidated Financial Statements                                 47
  Schedule II -- Valuation and Qualifying Accounts                           58














                                      40

<PAGE>

                      REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS




To Advanced Energy Industries, Inc.:


  We have audited the accompanying consolidated balance sheets of Advanced
Energy Industries, Inc. (a Delaware corporation) and subsidiaries as of December
31, 1997 and 1996, and the related consolidated statements of income,
stockholders' equity, and cash flows for each of the three years in the period
ended December 31, 1997. These consolidated financial statements and the
schedule referred to below are the responsibility of the Company's management.
Our responsibility is to express an opinion on these consolidated financial
statements and schedule based on our audits.

  We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

  In our opinion, the consolidated financial statements referred to above
present fairly, in all material respects, the financial position of Advanced
Energy Industries, Inc. and subsidiaries as of December 31, 1997 and 1996, and
the results of their operations and their cash flows for each of the three years
in the period ended December 31, 1997 in conformity with generally accepted
accounting principles.

  Our audits were made for the purpose of forming an opinion on the basic
financial statements taken as a whole. The schedule listed in the index of the
consolidated financial statements is presented for purposes of complying with
the Securities and Exchange Commission's rules and is not part of the basic
financial statements. This schedule has been subjected to the auditing
procedures applied in our audits of the basic financial statements and, in our
opinion, is fairly stated in all material respects in relation to the basic
financial statements taken as a whole.




Denver, Colorado                                       ARTHUR ANDERSEN LLP

February 6, 1998.



                                      41

<PAGE>
                                       
             ADVANCED ENERGY INDUSTRIES, INC. AND SUBSIDIARIES

                        CONSOLIDATED BALANCE SHEETS
                               (IN THOUSANDS)

<TABLE>
                                                          DECEMBER 31,
                                                     -----------------------
                                                       1997           1996
                                                     --------        -------
<S>                                                  <C>             <C>
                     ASSETS

CURRENT ASSETS:
  Cash and cash equivalents                          $ 11,470        $11,231
  Marketable securities - trading                      20,174             --
  Accounts receivable --
     Trade (less allowances for doubtful accounts 
       of approximately $428 and $242 at 
       December 31, 1997 and 1996, respectively)       26,150         15,287
     Related parties                                      893            541
     Other                                              1,343            288
  Inventories                                          26,243         13,976
  Other current assets                                  2,472          1,013
  Deferred income tax assets, net                       2,836          1,223
                                                     --------        -------
          Total current assets                         91,581         43,559
                                                     --------        -------


PROPERTY AND EQUIPMENT, at cost, net of accumulated
  depreciation of $7,017 and $5,779 at December 31,
  1997 and 1996, respectively                          11,331          9,500
                                                     --------        -------


OTHER ASSETS:
  Deposits and other                                      500          1,139
  Goodwill, net of accumulated amortization of 
   $378 at December 31, 1997                            7,112             --
  Demonstration and customer service equipment, 
   net of accumulated depreciation of $1,673 and 
   $1,276 at December 31, 1997 and 1996, 
   respectively                                         1,719          1,833
                                                     --------        -------
                                                        9,331          2,972
                                                     --------        -------
          Total assets                               $112,243        $56,031
                                                     --------        -------
                                                     --------        -------
</TABLE>

         The accompanying notes to consolidated financial statements
          are an integral part of these consolidated balance sheets.

                                      42
<PAGE>

              ADVANCED ENERGY INDUSTRIES, INC. AND SUBSIDIARIES

                         CONSOLIDATED BALANCE SHEETS
                                (IN THOUSANDS)

<TABLE>
                                                           DECEMBER 31,
                                                     -----------------------
                                                       1997           1996
                                                     --------        -------
<S>                                                  <C>             <C>
     LIABILITIES AND STOCKHOLDERS' EQUITY

CURRENT LIABILITIES:
  Accounts payable trade                             $ 12,045        $ 2,253
  Accrued payroll and employee benefits                 5,243          2,396
  Other accrued expenses                                1,327          1,156
  Customer deposits                                       226            166
  Accrued income taxes payable                          2,734          1,485
  Capital lease obligations, current portion              147            315
  Notes payable, current portion                        3,151            609
                                                     --------        -------
       Total current liabilities                       24,873          8,380
                                                     --------        -------

LONG-TERM LIABILITIES:
  Capital lease obligations, net of current portion        22            169
  Notes payable, net of current portion                    --            958
  Deferred income taxes                                    --             28
                                                     --------        -------
                                                           22          1,155
                                                     --------        -------
       Total liabilities                               24,895          9,535
                                                     --------        -------

COMMITMENTS AND CONTINGENCIES (Note 12)

STOCKHOLDERS' EQUITY (Note 1):
  Preferred stock, $0.001 par value, 1,000 shares
     authorized, none issued and outstanding               --             --
  Common stock, $0.001 par value, 30,000 shares 
    authorized; 22,493 and 21,268 shares issued 
    and outstanding, respectively                          22             21
  Additional paid-in capital                           52,625         23,075
  Retained earnings                                    35,427         25,065
  Stockholders' notes receivable                           --         (1,083)
  Deferred compensation                                   (34)           (82)
  Cumulative translation adjustment                      (692)          (500)
                                                     --------        -------
       Total stockholders' equity                      87,348         46,496
                                                     --------        -------
       Total liabilities and stockholders' equity    $112,243        $56,031
                                                     --------        -------
                                                     --------        -------
</TABLE>


        The accompanying notes to consolidated financial statements
         are an integral part of these consolidated balance sheets.

                                      43
<PAGE>

                 ADVANCED ENERGY INDUSTRIES, INC. AND SUBSIDIARIES

                         CONSOLIDATED STATEMENTS OF INCOME
                      (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)



<TABLE>
                                                            YEARS ENDED DECEMBER 31,
                                                    -------------------------------------- 
                                                      1997           1996           1995
                                                      ----           ----           ---- 
<S>                                                 <C>             <C>            <C>
SALES                                               $141,923        $98,852        $94,708
COST OF SALES                                         87,538         62,038         49,314
                                                    --------        -------        ------- 
  Gross profit                                        54,385         36,814         45,394
                                                    --------        -------        ------- 
OPERATING EXPENSES:
  Research and development                            14,751         13,760         10,522
  Sales and marketing                                  9,565          8,590          6,201
  General and administrative                           7,284          6,253          7,193
  Storm damage, net of $300 insurance reimbursement    2,700             --             --
  Purchased in-process research and development        3,080             --             --
                                                    --------        -------        ------- 
    Total operating expenses                          37,380         28,603         23,916
                                                    --------        -------        ------- 
INCOME FROM OPERATIONS                                17,005          8,211         21,478
                                                    --------        -------        ------- 
OTHER INCOME (EXPENSE):
  Interest income                                        543            455             71
  Interest expense                                      (329)          (168)          (612)
  Foreign currency gain (loss)                            97           (351)            (7)
  Other (expense) income, net                           (285)           157            155
                                                    --------        -------        ------- 
    Total other income (expense)                          26             93           (393)
                                                    --------        -------        ------- 
      Net income before income taxes                  17,031          8,304         21,085
PROVISION FOR INCOME TAXES                             6,669          3,160          7,804
                                                    --------        -------        ------- 
NET INCOME                                          $ 10,362        $ 5,144        $13,281
                                                    --------        -------        ------- 
                                                    --------        -------        ------- 
BASIC EARNINGS PER SHARE                            $   0.48        $  0.24        $  0.73
                                                    --------        -------        ------- 
                                                    --------        -------        ------- 
DILUTED EARNINGS PER SHARE                          $   0.47        $  0.24        $  0.69
                                                    --------        -------        ------- 
                                                    --------        -------        ------- 
BASIC WEIGHTED-AVERAGE COMMON SHARES
  OUTSTANDING                                         21,544         21,242         18,216
                                                    --------        -------        ------- 
                                                    --------        -------        ------- 
DILUTED WEIGHTED-AVERAGE COMMON 
  SHARES OUTSTANDING                                  22,274         21,666         19,310
                                                    --------        -------        ------- 
                                                    --------        -------        ------- 
</TABLE>


            The accompanying notes to consolidated financial statements
               are an integral part of these consolidated statements.


                                      44

<PAGE>

                 ADVANCED ENERGY INDUSTRIES, INC. AND SUBSIDIARIES

                  CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
                                   (IN THOUSANDS)

                FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995


<TABLE>
                                          COMMON STOCK   ADDITIONAL           STOCKHOLDERS'              CUMULATIVE      TOTAL
                                         --------------   PAID-IN   RETAINED     NOTES      DEFERRED    TRANSLATION  STOCKHOLDERS'
                                         SHARES  AMOUNT   CAPITAL   EARNINGS  RECEIVABLE  COMPENSATION  ADJUSTMENT        EQUITY 
                                         ------  ------   -------   --------  ----------  ------------  ----------   -------------
<S>                                      <C>     <C>      <C>       <C>       <C>         <C>           <C>          <C>
BALANCES, December 31, 1994               17,293   $17    $   367   $ 6,640     $    --       $  --        $ 194         $ 7,218
  Equity adjustment from foreign
    currency translation                      --    --         --        --          --          --         (761)           (761)

  Exercise of stock options for cash         140     1        124        --          --          --           --             125
  Exercise of stock options in exchange
    for stockholders' notes receivable     1,236     1      1,082        --      (1,083)         --           --              --
  Deferred compensation on stock
    options issued                            --    --        142        --          --        (142)          --              --
  Amortization of deferred compensation       --    --         --        --          --          12           --              12
  Sale of common stock through public
    offering, net of approximately $2,790
    of expenses                            2,400     2     21,210        --          --          --           --          21,212
  Net income                                  --    --         --    13,281          --          --           --          13,281
                                          ------   ---    -------   -------     -------       -----        -----         -------
BALANCES, December 31, 1995               21,069    21     22,925    19,921      (1,083)       (130)        (567)         41,087
  Equity adjustment from foreign
    currency translation                      --    --         --        --          --          --           67              67
  Exercise of stock options for cash         199    --        150        --          --          --           --             150
  Amortization of deferred compensation       --    --         --        --          --          48           --              48
  Net income                                  --    --         --     5,144          --          --           --           5,144
                                          ------   ---    -------   -------     -------       -----        -----         -------
BALANCES, December 31, 1996               21,268    21     23,075    25,065      (1,083)        (82)        (500)         46,496
  Equity adjustment from foreign 
    currency translation                      --    --         --        --          --          --         (192)           (192)
  Exercise of stock options for cash         127    --        255        --          --          --           --             255
  Exercise of stock options in exchange 
    for stockholders' notes receivable        90    --        470        --        (470)         --           --              --
  Proceeds from stockholders' notes 
    receivable                                --    --         --        --       1,553          --           --           1,553
  Sale of common stock through employee
    stock purchase plan                        8    --        102        --          --          --           --             102
  Amortization of deferred compensation       --    --         --        --          --          48           --              48
  Sale of common stock through public
    offering, net of approximately $2,276 
    of expenses                            1,000     1     28,723        --          --          --           --          28,724
  Net income                                  --    --         --    10,362          --          --           --          10,362
                                          ------   ---    -------   -------     -------       -----        -----         -------
BALANCES, December 31, 1997               22,493   $22    $52,625   $35,427     $    --       $ (34)       $(692)        $87,348
                                          ------   ---    -------   -------     -------       -----        -----         -------
                                          ------   ---    -------   -------     -------       -----        -----         -------
</TABLE>

                  The accompanying notes to consolidated financial statements
                    are an integral part of these consolidated statements.


                                          45
<PAGE>

               ADVANCED ENERGY INDUSTRIES, INC. AND SUBSIDIARIES
                                       
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                                (IN THOUSANDS)


<TABLE>
                                                          YEARS ENDED DECEMBER 31,
                                                        -----------------------------
                                                          1997      1996       1995
                                                        -------    -------    -------
<S>                                                     <C>        <C>        <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net income                                            $10,362    $ 5,144    $13,281
  Adjustments to reconcile net income to net cash     
   provided by operating activities -                 
     Depreciation and amortization                        3,710      2,609      1,543
     Provision for deferred income taxes                 (1,584)      (286)      (252)
     Amortization of deferred compensation                   48         48         12
     Purchased in-process research and development        3,080         --         --
     Loss on disposal of property and equipment           1,046         41         66
     Earnings from marketable securities, net              (174)        --         --
     Changes in operating assets and liabilities -    
        Accounts receivable-trade, net                   (9,213)    (1,747)    (5,477)
        Related parties and other receivables              (502)       803       (889)
        Inventories                                      (9,576)     2,128     (8,907)
        Other current assets                             (1,420)      (350)      (371)
        Deposits and other                                  639       (324)      (225)
        Demonstration and customer service equipment       (636)      (644)      (937)
        Accounts payable, trade                           8,500     (4,412)     3,568
        Accrued payroll and employee benefits             2,569       (367)       725
        Customer deposits and other accrued expenses        231        460        149
        Income taxes payable                              1,011        149      1,388
                                                        -------    -------    -------
          Net cash provided by operating activities       8,091      3,252      3,674
                                                        -------    -------    -------
CASH FLOWS FROM INVESTING ACTIVITIES:                 
  Purchase of marketable securities                     (20,000)        --         --
  Acquisition of Tower Electronics, Inc., net of      
   cash acquired                                        (12,995)        --         --
  Purchase of property and equipment, net                (5,179)    (5,137)    (3,824)
                                                        -------    -------    -------
          Net cash used in investing activities         (38,174)    (5,137)    (3,824)
                                                        -------    -------    -------
CASH FLOWS FROM FINANCING ACTIVITIES:                 
  Proceeds from notes payable                            13,763      1,606     31,179
  Repayment of notes payable and capital              
    lease obligations                                   (13,883)    (2,039)   (34,103)
  Repayment of subordinated notes to stockholders            --         --     (4,538)
  Sale of common stock, net of expenses                  28,724         --     21,212
  Sale of common stock through employee stock         
    purchase plan                                           102         --         --
  Proceeds from exercise of stock options and         
    warrants                                                255        150        125
  Proceeds from stockholders' notes receivable            1,553         --         --
                                                        -------    -------    -------
    Net cash provided by (used in) financing         
     activities                                          30,514       (283)    13,875
                                                        -------    -------    -------
EFFECT OF CURRENCY TRANSLATION ON CASH FLOW                (192)        67       (761)
                                                        -------    -------    -------
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS            239     (2,101)    12,964
CASH AND CASH EQUIVALENTS, beginning of period           11,231     13,332        368
                                                        -------    -------    -------
CASH AND CASH EQUIVALENTS, end of period                $11,470    $11,231    $13,332
                                                        -------    -------    -------
                                                        -------    -------    -------
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING         
 AND FINANCING ACTIVITIES:                            
    Note payable assumed in Tower acquisition           $ 1,389    $    --    $    --
                                                        -------    -------    -------
                                                        -------    -------    -------
    Deferred compensation on stock options            
     issued                                             $    --    $    --    $   142
                                                        -------    -------    -------
                                                        -------    -------    -------
    Exercise of stock options in exchange for         
     stockholders' notes receivable                     $   470    $    --    $ 1,083
                                                        -------    -------    -------
                                                        -------    -------    -------
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:     
  Cash paid for interest                                $   329    $   168    $   604
                                                        -------    -------    -------
                                                        -------    -------    -------
  Cash paid for income taxes                            $ 7,242    $ 3,940    $ 6,668
                                                        -------    -------    -------
                                                        -------    -------    -------
</TABLE>

             The accompanying notes to consolidated financial statements
               are an integral part of these consolidated statements.

                                       46
<PAGE>

                 ADVANCED ENERGY INDUSTRIES, INC. AND SUBSIDIARIES
                                       
                     NOTES TO CONSOLIDATED FINANCIAL STATEMENTS


(1) COMPANY OPERATIONS

   Advanced Energy Industries, Inc. (the "Company") was incorporated in 
Colorado in 1981 and reincorporated in Delaware in 1995. The Company is 
primarily engaged in the development and production of power conversion and 
control systems which are used by manufacturers of semiconductors and in 
industrial thin film manufacturing processes. The Company owns 100% of each 
of the following subsidiaries:  Advanced Energy Japan, K.K. ("AE-Japan"), 
Advanced Energy, GmbH ("AE-Germany"), Advanced Energy U.K. Limited ("AE-UK") 
and Advanced Energy Korea, Limited ("AE-Korea").  The Company also owns 100% 
of Tower Electronics, Inc. ("Tower"), a Minnesota-based designer and 
manufacturer of custom, high performance switchmode power supplies used 
principally in the telecommunications, medical and non-impact printing 
industries.

   In September 1995, the Company reincorporated in Delaware with an 
authorized capitalization of 30,000,000 shares of common stock, $0.001 par 
value. Also in September 1995, the Company approved a three for one share 
common stock split. All share and per share data have been retroactively 
adjusted in the accompanying consolidated financial statements for the effect 
of the stock split. Additionally, the Company also authorized 1,000,000 
shares of $0.001 par value preferred stock.

   The Company continues to be subject to certain risks similar to other 
companies in its industry. These risks include the volatility of the 
semiconductor industry, customer concentration within the industry, 
technological changes, dependence on the Japanese market, foreign currency 
risk and competition. A significant change in any of these risk factors could 
have a material impact on the Company's business.

(2) SIGNIFICANT ACCOUNTING POLICIES

   BASIS OF PRESENTATION -- The consolidated financial statements include the 
accounts of the Company and its subsidiaries. All significant intercompany 
accounts and transactions have been eliminated in consolidation.

   CASH AND CASH EQUIVALENTS -- For cash flow purposes, the Company considers 
all cash and highly liquid investments with an original maturity of 90 days 
or less to be cash and cash equivalents.

   INVENTORIES -- Inventories include costs of materials, direct labor and 
manufacturing overhead. Inventories are valued at the lower of market or 
cost, computed on a first-in, first-out basis.

   MARKETABLE SECURITIES - TRADING -- Effective July 1, 1994, the Company 
adopted Statement of Financial Accounting Standards ("SFAS") No. 115, 
"Accounting for Certain Investments in Debt and Equity Securities." SFAS No. 
115 addresses the accounting and reporting for investments in equity and debt 
securities. The Company has investments in marketable equity securities and 
municipal bonds which have original maturities of 90 days or more. The 
investments are classified as trading securities and reported at fair value 
with unrealized gains and losses included in earnings.

   DEMONSTRATION AND CUSTOMER SERVICE EQUIPMENT -- Demonstration and customer 
service equipment are manufactured products utilized for sales demonstration 
and evaluation purposes. The Company also utilizes this equipment in its 
customer service function as replacement and loaner equipment to existing 
customers. All equipment is held for sale.

                                      47
<PAGE>

   The Company depreciates the equipment based on an estimated 3-year useful 
life in the sales and customer service functions.
  
   PROPERTY AND EQUIPMENT -- Property and equipment is stated at cost. 
Additions, improvements, and major renewals are capitalized. Maintenance, 
repairs, and minor renewals are expensed as incurred.

   Depreciation is provided using straight-line and accelerated methods over 
three to ten years for machinery and equipment. Amortization of leasehold 
improvements and leased equipment is provided using the straight-line method 
over the life of the lease term or the life of the assets, whichever is 
shorter.

   CONCENTRATIONS OF CREDIT RISK -- The Company's revenues generally are 
concentrated among a small number of customers, the majority of which are in 
the semiconductor equipment industry. The Company establishes an allowance 
for doubtful accounts based upon factors surrounding the credit risk of 
specific customers, historical trends and other information.

   WARRANTY POLICY -- The Company estimates the anticipated costs of 
repairing products under warranty based on the historical average cost of the 
repairs. The Company offers warranty coverage for its systems for periods 
ranging from 12 to 24 months after shipment.

   CUMULATIVE TRANSLATION ADJUSTMENT -- The functional currency for the 
Company's foreign operations is the applicable local currency.

   The Company records a cumulative translation adjustment from translation 
of the financial statements of AE-Japan, AE-Germany and AE-UK. This equity 
account includes the results of translating all balance sheet assets and 
liabilities at current exchange rates as of the balance sheet date, and the 
statements of income at the average exchange rates during the respective year.

   The Company recognizes gain or loss on foreign currency transactions which 
are not considered to be of a long-term investment nature. The Company 
recognized a gain (loss) on foreign currency transactions of $97,000, 
$(351,000) and $(7,000) for the years ended December 31, 1997, 1996 and 1995, 
respectively.

   REVENUE RECOGNITION -- The Company recognizes revenue when products are 
shipped.

   INCOME TAXES -- The Company accounts for income taxes by recognizing 
deferred tax assets and liabilities for temporary differences between the tax 
basis and financial reporting basis of assets and liabilities, computed at 
current tax rates.

   EARNINGS PER SHARE -- In February 1997, the Financial Accounting Standards 
Board issued SFAS No. 128, "Earnings Per Share," which requires companies to 
present basic earnings per share ("EPS") and diluted EPS, instead of the 
primary and fully-diluted EPS that were previously required. The new standard 
is effective for the Company in fiscal 1997 and all prior periods have been 
retroactively adjusted. Basic EPS is computed by dividing income available to 
common stockholders by the weighted-average number of common shares 
outstanding during the period. The computation of diluted EPS is similar to 
the computation of basic EPS except that the denominator is increased to 
include the number of additional common shares that would have been 
outstanding if dilutive potential common shares had been issued.

   ESTIMATES AND ASSUMPTIONS -- The preparation of the Company's consolidated 
financial statements in conformity with generally accepted accounting 
principles requires the Company's management to make estimates and 
assumptions that affect the amounts reported and disclosed in the 
consolidated financial statements and accompanying notes. Actual results 
could differ from those estimates.

                                      48
<PAGE>

   ASSET IMPAIRMENTS -- The Company reviews its long-lived assets and certain
identifiable intangibles held and used by the Company for impairment whenever
events or changes in circumstances indicate their carrying amount may not be
recoverable. In so doing, the Company estimates the future net cash flows
expected to result from the use of the asset and its eventual disposition. If
the sum of the expected future net cash flows (undiscounted and without interest
charges) is less than the carrying amount of the asset, an impairment loss is
recognized to reduce the asset to its estimated fair value. Otherwise, an
impairment loss is not recognized. Long-lived assets and certain identifiable
intangibles to be disposed of, if any, are reported at the lower of carrying
amount or fair value less cost to sell.


(3) ACQUISITION

   Effective August 15, 1997, the Company acquired all of the outstanding 
stock of Tower, a Minnesota-based designer and manufacturer of custom, 
high-performance switchmode power supplies used principally in the 
telecommunications, medical and non-impact printing industries. The purchase 
price consisted of $14.5 million in cash and a $1.5 million non-interest 
bearing promissory note to the seller (the "Note"), payable in August 1998. 
Total consideration, including the effect of imputing interest on the Note, 
equaled $15,889,000. The acquisition was accounted for using the purchase 
method of accounting and resulted in a one-time charge of $3,080,000 for 
in-process research and development acquired as a result of the transaction. 
Acquisition costs totaled approximately $209,000.
  
   The purchase price was allocated to the net assets of Tower as summarized 
below:

<TABLE>
                                                  (In thousands)
<S>                                                  <C>
     Cash and cash equivalents                       $ 1,714
     Accounts receivable                               2,555
     Inventories                                       2,691
     Deferred tax asset                                   57
     Fixed assets                                        280
     Goodwill                                          7,490
     Purchased in-process research and development     3,080
     Other assets                                         39
     Accounts payable                                 (1,292)
     Accrued liabilities                                (516)
                                                     --------
                                                     $16,098
                                                     --------
                                                     --------
</TABLE>
  
   The results of operations of Tower are included within the accompanying 
consolidated financial statements from the date of acquisition.

   The following table sets forth the condensed unaudited pro forma operating 
results of the Company for the twelve months ended December 31, 1997 and 
1996. The condensed pro forma operating results assume that the Tower 
acquisition had occurred on January 1, 1996 and was funded with debt 
outstanding until the secondary offering occurred in October 1997. 
Additionally, the pro forma operating results do not include charges for the 
$3,080,000 purchased in-process research and development as it is 
non-recurring. The condensed pro forma results are not necessarily indicative 
of the results of operations had the acquisition consummated on January 1, 
1996, and may not necessarily be indicative of future performance.

<TABLE>

   TWELVE MONTHS ENDED DECEMBER 31,              (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
   (UNAUDITED)                                     1997           1996
   --------------------------------              -----------    -----------
<S>                                              <C>            <C>
   Sales                                         $154,568       $112,253
   Net income                                    $ 14,476       $  4,842
   Basic earnings per share                      $      0.67    $      0.23
   Diluted earnings per share                    $      0.65    $      0.22
   Basic weighted-average common shares 
    outstanding                                    21,544         21,242
   Diluted weighted-average common shares 
    outstanding                                    22,274         21,666
</TABLE>

                                      49
<PAGE>

(4) PUBLIC OFFERINGS

   In November 1995, the Company closed on the initial public offering of its 
common stock. In connection with the offering, 2,400,000 shares of common 
shares were sold at a price of $10 per share, providing gross proceeds of 
$24,000,000, less $2,790,000 in offering costs.
  
   In October 1997, the Company closed on a secondary offering of its common 
stock. In connection with this offering, 1,000,000 shares of common shares 
were sold at a price of $31 per share, providing gross proceeds of 
$31,000,000, less $2,276,000 in offering costs.


(5) MARKETABLE SECURITIES - TRADING

   Marketable securities - trading consisted of the following:

<TABLE>
                                                  DECEMBER 31,
                                            ----------------------
                                              1997           1996
                                            -------         ------
                                                (IN THOUSANDS)
<S>                                         <C>             <C>
   Equities                                 $18,345          $  --
   Municipal bonds and notes                  1,700             --
   Mutual funds                                 129             --
                                            -------          -----
                                            $20,174          $  --
                                            -------          -----
                                            -------          -----
</TABLE>

   These marketable securities are reported at fair value and have original 
costs of $20,000,000.
  
  
(6) ACCOUNTS RECEIVABLE - TRADE

   Accounts receivable - trade consisted of the following:

<TABLE>
                                                  DECEMBER 31,
                                            ----------------------
                                              1997           1996
                                            -------         ------
                                                (IN THOUSANDS)
<S>                                         <C>             <C>
   Domestic                                 $16,724        $ 9,944
   Foreign                                    9,854          5,585
   Allowance for doubtful accounts             (428)          (242)
                                            -------        -------
                                            $26,150        $15,287
                                            -------        -------
                                            -------        -------
</TABLE>

(7) INVENTORIES

   Inventories consisted of the following:
<TABLE>
                                                  DECEMBER 31,
                                            ----------------------
                                              1997           1996
                                            -------         ------
                                                (IN THOUSANDS)
<S>                                         <C>            <C>
   Parts and raw materials                  $18,549        $11,149
   Work in process                            2,542          1,122
   Finished goods                             5,152          1,705
                                            -------        -------
                                            $26,243        $13,976
                                            -------        -------
                                            -------        -------
</TABLE>

                                      50

<PAGE>

(8) PROPERTY AND EQUIPMENT

  Property and equipment consisted of the following:
<TABLE>
                                                  DECEMBER 31,
                                            ----------------------
                                              1997           1996
                                            -------         ------
                                                (IN THOUSANDS)
<S>                                         <C>             <C>
   Machinery and equipment                   $ 8,912       $ 5,708
   Computers and communication equipment       4,638         4,793
   Furniture and fixtures                      1,996         1,996
   Vehicles                                      100           140
   Leasehold improvements                      2,702         2,642
                                             -------       -------
                                              18,348        15,279
   Less -- accumulated depreciation           (7,017)       (5,779)
                                             -------       -------
                                             $11,331       $ 9,500
                                             -------       -------
                                             -------       -------
</TABLE>

   Included in the cost of property and equipment above is equipment obtained 
through capital leases. The net book value of capital lease equipment 
included in property and equipment above was as follows at December 31, 1997 
and 1996:

<TABLE>
                                                  DECEMBER 31,
                                            ----------------------
                                              1997           1996
                                            -------         ------
                                                (IN THOUSANDS)
<S>                                         <C>             <C>
   Machinery and equipment                    $ 79           $243
   Computers and communication equipment        --             62
   Furniture and fixtures                        1             14
                                              ----           ----
                                              $ 80           $319
                                              ----           ----
                                              ----           ----
</TABLE>

   Depreciation of assets acquired under capitalized leases is included in 
depreciation expense.


(9) NOTES PAYABLE

<TABLE>
                                                                                DECEMBER 31,
                                                                          ----------------------
                                                                            1997           1996
                                                                          -------         ------
                                                                              (IN THOUSANDS)
<S>                                                                       <C>             <C>
                                                                                                       
 Revolving line of credit of $30,000,000, expiring December 7, 2000,                                   
   interest at bank's prime rate minus 1.25% or the LIBOR 360-day rate                                 
   plus 150 basis points. Option to convert up to $10,000,000 to a                                     
   three-year term loan; advances up to $5,000,000 each for Optional                                   
   Currency Rate Advances and Foreign Exchange Contracts. Loan                                         
   covenants provide certain financial restrictions related to working                                 
   capital, leverage, net worth and profitability                          $    --        $    --
 Bank overdraft loan, maturing February and March 1998 at interest                               
   rates ranging from 1.05% to 1.65% annually                                1,762             --
 Promissory note related to indemnification clause of Tower acquisition,                         
   maturing August 1998 with an imputed interest rate of 8%                  1,389             --
 Term loan of $1,500,000 with a bank at prime plus 0.25%                        --          1,458
 Other                                                                          --            109
                                                                           --------       --------
                                                                             3,151          1,567
 Less -- current portion                                                    (3,151)          (609)
                                                                           --------       --------
                                                                           $    --        $   958
                                                                           --------       --------
                                                                           --------       --------
</TABLE>


(10) INCOME TAXES

   For the years ended December 31, 1997, 1996 and 1995, the provision for 
income taxes consists of an amount for taxes currently payable and a 
provision for tax effects deferred to future periods. In 1997, the Company 
increased its statutory U.S. tax rate from 34% to 35%.

                                       51
<PAGE>

  The provision (benefit) for income taxes for the years ended December 31, 
1997, 1996 and 1995, is as follows:

<TABLE>
                                                DECEMBER 31,
                                   -------------------------------------
                                     1997           1996           1995
                                   -------         ------         ------
                                               (IN THOUSANDS)
<S>                                <C>             <C>            <C>
     Federal                       $ 5,470         $2,744         $5,827
     State and local                 1,128            568            918
     Foreign taxes                      71           (152)         1,059
                                   -------         ------         ------
                                   $ 6,669         $3,160         $7,804
                                   -------         ------         ------
                                   -------         ------         ------
     Current                         8,253         $3,446         $8,056
     Deferred                       (1,584)          (286)          (252)
                                   -------         ------         ------
                                   $ 6,669         $3,160         $7,804
                                   -------         ------         ------
                                   -------         ------         ------
</TABLE>

  The following reconciles the Company's effective tax rate to the federal 
statutory rate for the years ended December 31, 1997, 1996 and 1995:

<TABLE>
                                                                DECEMBER 31,
                                                      ---------------------------------
                                                       1997         1996          1995
                                                      ------       ------        ------
                                                               (IN THOUSANDS)
<S>                                                   <C>          <C>           <C>
 Income tax expense per federal statutory rate        $5,961       $2,823        $7,397
 State income taxes, net of federal deduction            733          375           596
 Foreign sales corporation                              (209)        (108)         (208)
 Nondeductible goodwill amortization                     132           --            --
 Nondeductible purchased in-process research 
  and development                                      1,078           --            --
 Other permanent items, net                              (22)          77            49
 Effect of foreign taxes                                (255)        (168)          316
 Tax credits                                            (272)        (182)         (260)
 Other                                                  (477)         343           (86)
                                                      ------       ------        ------
                                                      $6,669       $3,160        $7,804
                                                      ------       ------        ------
                                                      ------       ------        ------
</TABLE>

The Company's deferred income taxes are summarized as follows:

<TABLE>
                                                  DECEMBER 31, 1997   CHANGE   DECEMBER 31, 1996
                                                  -----------------   ------   -----------------
                                                                 (IN THOUSANDS)
<S>                                               <C>                 <C>      <C>
     Deferred tax assets:
       Employee bonuses                               $  203          $  203         $  --
       Warranty reserve                                  312             137           175
       Bad debt reserve                                  135              60            75
       Vacation accrual                                  295             (31)          326
       Obsolete and excess inventory                   1,049             475           574
       Foreign operating loss carryforward               643             643            --
       Other                                             199              69            73
                                                      ------          ------        ------
                                                       2,836           1,556         1,223
                                                      ------          ------        ------
     Deferred tax liabilities:
       Accumulated depreciation                           --              28           (28)
                                                      ------          ------        ------
     Net deferred income tax assets                   $2,836          $1,584        $1,195
                                                      ------          ------        ------
                                                      ------          ------        ------
</TABLE>

  The domestic versus foreign component of the Company's net income before 
income taxes at December 31, 1997, 1996 and 1995, was as follows:

<TABLE>
                                           DECEMBER 31,
                               -------------------------------------
                                 1997           1996           1995
                               -------         ------        -------
                                          (IN THOUSANDS)
<S>                            <C>             <C>           <C>
     Domestic                  $16,102         $8,255        $18,969
     Foreign                       929             49          2,116
                               -------         ------        -------
                               $17,031         $8,304        $21,085
                               -------         ------        -------
                               -------         ------        -------
</TABLE>

                                      52
<PAGE>

(11) RETIREMENT PLAN

  The Company has a 401(k) Profit Sharing Plan which covers all full-time 
employees who have completed six months of full-time continuous service and 
are age eighteen or older. Participants may defer up to 20% of their gross 
pay up to a maximum limit determined by law ($9,500 during 1997). 
Participants are immediately vested in their contributions.

  The Company may make discretionary contributions based on corporate 
financial results for the fiscal year. Effective January 1, 1998, the Company 
increased its matching contribution for participants in the 401(k) Plan up to 
a 50% matching on contributions by employees up to 6% of the employee's 
compensation. The Company's total contributions to the plan were 
approximately $580,000, $45,000 and $537,000 for the years ended December 31, 
1997, 1996 and 1995, respectively. Vesting in the profit sharing contribution 
account (company contribution) is based on years of service, with a 
participant fully vested after five years of credited service.

(12) COMMITMENTS AND CONTINGENCIES

 CAPITAL LEASES

  The Company finances a portion of its property and equipment (Note 8) under 
capital lease obligations at interest rates ranging from 7.63% to 8.66%. The 
future minimum lease payments under capitalized lease obligations as of 
December 31, 1997, are as follows:

<TABLE>
                                                 (IN THOUSANDS)
<S>                                              <C>
       1998                                           $ 154
       1999                                              23
                                                      -----
          Total minimum lease payments                  177
          Less -- amount representing interest           (8)
          Less -- current portion                      (147)
                                                      -----
                                                      $  22
                                                      -----
                                                      -----
</TABLE>

 OPERATING LEASES

  The Company has various operating leases for automobiles, equipment, and 
office and production space (Note 14). Lease expense under operating leases 
was approximately $2,251,000, $1,788,000 and $1,184,000 for the years ended 
December 31, 1997, 1996 and 1995, respectively.

  The future minimum rental payments required under noncancelable operating 
leases as of December 31, 1997, are as follows:

<TABLE>
                                                 (IN THOUSANDS)
<S>                                              <C>
       1998                                          $ 2,597
       1999                                            2,488
       2000                                            2,201
       2001                                            1,929
       2002                                            1,553
       Thereafter                                      9,199
                                                     -------
                                                     $19,967
                                                     -------
                                                     -------
</TABLE>

 GUARANTEE

  In October 1997, the Company extended a guarantee for a $2,500,000 bank 
term loan for an additional year, entered into by an entity that serves as a 
supplier to the Company. An officer of the Company serves as a director of 
such entity. The Company has received warrants to purchase shares of the 
supplier for providing this guarantee.

                                      53
<PAGE>

(13) FOREIGN OPERATIONS

  The Company operates in a single industry segment with operations in the 
U.S., Japan and Europe. The following is a summary of the Company's foreign 
operations:

<TABLE>
                                                                          YEARS ENDED DECEMBER 31,
                                                                   -------------------------------------
                                                                     1997           1996          1995
                                                                   --------       --------      --------
                                                                               (IN THOUSANDS)
<S>                                                                <C>            <C>           <C>
     Sales:
       Originating in Japan to unaffiliated customers              $ 11,431       $  6,467      $ 11,997
       Originating in Europe to unaffiliated customers                7,487          8,023         6,237
       Originating in U.S. and sold to unaffiliated foreign 
        customers                                                    17,095          9,506         9,018
       Originating in U.S. and sold to domestic customers           105,910         74,856        67,456
       Transfers between geographic areas                            14,523         10,496        11,524
       Intercompany eliminations                                    (14,523)       (10,496)      (11,524)
                                                                   --------       --------      --------
                                                                   $141,923       $ 98,852      $ 94,708
                                                                   --------       --------      --------
                                                                   --------       --------      --------
     Income (loss) from operations:
       Japan                                                       $    (73)      $   (920)     $  1,094
       Europe                                                         1,488          1,056           953
       U.S.                                                          15,893          8,383        19,448
       South Korea                                                       --             --            --
       Intercompany eliminations                                       (303)          (308)          (17)
                                                                   --------       --------      --------
                                                                   $ 17,005       $  8,211      $ 21,478
                                                                   --------       --------      --------
                                                                   --------       --------      --------
     Identifiable assets:
       Japan                                                       $ 10,709       $  6,445      $  6,342
       Europe                                                         4,676          3,788         2,502
       U.S.                                                         126,111         54,736        54,415
       South Korea                                                      250             --            --
       Intercompany eliminations                                    (29,503)        (8,938)       (7,940)
                                                                   --------       --------      --------
                                                                   $112,243       $ 56,031      $ 55,319
                                                                   --------       --------      --------
                                                                   --------       --------      --------
</TABLE>

  Intercompany sales among the Company's geographic areas are recorded on the 
basis of intercompany prices established by the Company.

(14) RELATED PARTY TRANSACTIONS

  The Company leases office and production spaces from a limited liability 
partnership consisting of certain officers of the Company and other 
individuals. The leases relating to these spaces expire in 2009 and 2011 with 
monthly payments of approximately $39,000 and $46,000, respectively. 

  The Company also leases other office and production space from another 
limited liability partnership consisting of certain officers of the Company 
and other individuals. The lease relating to this space expires in 2002 with 
a monthly payment of approximately $23,000.
  
  Approximately $1,320,000, $1,364,000, and $800,000 was charged to rent 
expense attributable to these leases for the years ended December 31, 1997, 
1996 and 1995, respectively.

  The Company leases, for business purposes, a condominium owned by a 
partnership of certain stockholders. The Company paid the partnership $36,000 
for each of the years ended December 31, 1997, 1996 and 1995, relating to 
this lease.
  
  Included in AE-Japan's accounts receivable at December 31, 1997, 1996 and 
1995, is approximately $835,000, $394,000 and $953,000, respectively, due 
from an entity that is controlled by the president of AE-Japan. This entity 
also accounted for approximately 2%, 3%, and 3% of consolidated sales during 
1997, 1996 and 1995, respectively.

  During 1997 and 1995, certain stockholders of the Company exercised options 
to purchase shares of the Company's common stock for an aggregate exercise 
price of $470,000 and $1,083,000, respectively. In exchange for the stock the 
Company received notes receivable in the amount of the exercise price. These 
notes receivable and accrued interest were paid in full during 1997.

                                      54
<PAGE>

(15) MAJOR CUSTOMERS

  The Company's sales to major customers (purchases in excess of 10% of total
sales) are to entities which are primarily manufacturers of semiconductor
equipment and, for the years ended December 31, 1997, 1996 and 1995 are as
follows:

<TABLE>
                                                DECEMBER 31,
                                         -------------------------
                                         1997       1996      1995
                                         ----       ----      ----
<S>                                      <C>        <C>       <C>
     Customer A                           34%        27%       24%
     Customer B                           10%        20%       17%
                                         ----       ----      ----
                                          44%        47%       41%
                                         ----       ----      ----
                                         ----       ----      ----
</TABLE>


(16) FORWARD CONTRACT

   AE-Japan enters into foreign currency forward contracts to buy U.S. 
dollars to hedge its payable position arising from trade purchases and 
intercompany transactions with its parent. Foreign currency forward contracts 
reduce the Company's exposure to the risk that the eventual net cash outflows 
resulting from the purchase of products denominated in yen will be adversely 
affected by changes in exchange rates. Foreign currency gains and losses 
under the above arrangements are not deferred. Foreign currency forward 
contracts are entered into with a major commercial Japanese bank that has a 
high credit rating and the Company does not expect the counterparty to fail 
to meet its obligations under outstanding contracts. The Company generally 
enters into foreign currency forward contracts with maturities ranging from 7 
to 10 months, with contracts outstanding at December 31, 1997, maturing 
through September 1998. At December 31, 1997, the Company held foreign 
forward exchange contracts with notional amounts of $8,000,000 and fair value 
amounts of $7,280,000 or an unrealized gain position of $720,000.


(17) STOCK PLANS

   EMPLOYEE STOCK OPTION PLAN -- During 1993, the Company adopted an Employee 
Stock Option Plan (the "Employee Option Plan") which was amended and restated 
in January and September 1995. The Employee Option Plan allows issuance of 
incentive stock options, non-qualified options, and stock purchase rights. 
The exercise price of incentive stock options shall not be less than 100% of 
the stock's fair market value on the date of grant. The exercise price of 
non-qualified stock options shall not be less than 50% of the stock's fair 
market value on the date of grant. Options issued in 1997, 1996 and 1995 were 
issued at 100% of fair market value, as determined by the Company, with 
typical vesting of one-third at the end of one year, and quarterly thereafter 
until fully vested after three years. Under the Employee Option Plan, the 
Company has the discretion to accelerate the vesting period. The options are 
exercisable for ten years from the date of grant. The Company has reserved 
3,500,000 shares of common stock for the issuance of stock under the Employee 
Option Plan which terminates in June 2003.

   In connection with the grant of certain stock options on June 30, 1995, 
the Company recorded $142,000 of deferred compensation for the difference 
between the deemed fair value for accounting purposes and the option price as 
determined by the Company at the date of grant. This amount is presented as a 
reduction of stockholders' equity and will be amortized over the 3-year 
vesting period of the related stock options.

   EMPLOYEE STOCK PURCHASE PLAN -- In September 1995, stockholders approved 
an Employee Stock Purchase Plan (the "Stock Purchase Plan") covering an 
aggregate of 200,000 shares of common stock. Employees are eligible to 
participate in the Stock Purchase Plan if employed by the Company for at 
least 20 hours per week during at least five months per calendar year. 
Participating employees may have up to 15% (subject to a 5% limitation set by
the Company's board of directors for fiscal 1996) of their earnings or a 
maximum of $1,250 per six month period withheld pursuant to the Stock 
Purchase Plan. Common stock purchased under the Stock Purchase Plan will be 
equal to 85% of the lower of the fair market value on the commencement date 
of each offering period or the relevant purchase date. During 1997 and 1996,

                                      55
<PAGE>

employees purchased an aggregate of 19,878 and 11,572 shares under the Stock 
Purchase Plan and the Company recognized approximately $27,000 and $11,000 in 
compensation expense, respectively.
  
   OUTSIDE DIRECTOR STOCK OPTION PLAN -- In September 1995, the Company 
adopted the 1995 Non-Employee Directors Stock Option Plan (the "Directors 
Plan") covering 50,000 shares of common stock. The Directors Plan provides 
for automatic grants of non-qualified stock options to directors of the 
Company who are not employees of the Company ("Outside Directors"). Pursuant 
to the Directors Plan, upon becoming a director of the Company, each Outside 
Director will be granted an option to purchase 7,500 shares of common stock. 
Such options will be immediately exercisable as to 2,500 shares of common 
stock, and will vest as to 2,500 shares of common stock on each of the second 
and third anniversaries of the grant date. On each anniversary of the date on 
which a person became an Outside Director, an option for an additional 2,500 
shares is granted. Such additional options vest on the third anniversary of 
the date of grant. Options will expire ten years after the grant date, and 
the exercise price of the options will be equal to the fair market value of 
the common stock on the grant date. The Directors Plan terminates September 
2005.

  The following summarizes the activity relating to options and warrants for 
the years ended December 31, 1997, 1996 and 1995:

<TABLE>
                                                          1997                   1996                 1995
                                                 ----------------------  ---------------------  ---------------------
                                                                   (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

                                                              Weighted-              Weighted-              Weighted- 
                                                               Average                Average                Average  
                                                              Exercise               Exercise               Exercise  
                                                   Shares      Price      Shares      Price      Shares      Price    
                                                 ---------    ---------  --------    --------   --------    --------
<S>                                             <C>           <C>      <C>           <C>      <C>           <C>
Stock options:                                                                               
  INCENTIVE STOCK OPTIONS --                                                                 
     Options outstanding at beginning of                                                     
       period                                        841       $ 3.02       729       $ 2.62      1,904       $ 0.95
     Granted                                         686        11.42       751         5.10        212         6.40
     Exercised                                      (215)        3.32      (199)        8.51     (1,371)        3.53
     Terminated                                      (33)        4.24      (440)        6.92        (16)        1.69
                                                  ------                  -----                  ------
     Options outstanding at end of period          1,279         6.77       841         3.02        729         2.62
                                                  ------                  -----                  ------
                                                  ------                  -----                  ------
     Options exercisable at end of period            383         3.45       326         1.51        391         0.88
                                                  ------                  -----                  ------
                                                  ------                  -----                  ------
     Weighted-average fair value of                                                                          
       options granted during the period          $ 7.86                  $3.14                  $ 1.84      
                                                  ------                  -----                  ------
                                                  ------                  -----                  ------
     Price range of outstanding options         $0.83 - $31.63         $0.83 - $11.05         $0.83 - $11.05
                                                --------------         --------------         --------------
                                                --------------         --------------         --------------
     Price range of options terminated          $3.40 - $ 9.00         $0.83 - $11.05         $0.83 - $ 3.11
                                                --------------         --------------         --------------
                                                --------------         --------------         --------------
OUTSIDE DIRECTORS STOCK OPTIONS--                                                            
    Options outstanding at beginning of                                                      
      period                                          20       $ 9.82        15       $11.05         --       $   --
    Granted                                           17        16.64         5         6.13         15        11.05
    Exercised                                         (2)        7.13        --           --         --          --
    Terminated                                       (10)        9.82        --           --         --          --
                                                  ------                  -----                  ------
    Options outstanding at end of period              25        14.86        20         9.82         15        11.05
                                                  ------                  -----                  ------
                                                  ------                  -----                  ------
    Options exercisable at end of period               8        14.62         5        11.05          5        11.05
                                                  ------                  -----                  ------
                                                  ------                  -----                  ------
    Weighted-average fair value of options                                                                   
      granted during the period                   $11.43                  $4.68                  $ 3.19      
                                                  ------                  -----                  ------
                                                  ------                  -----                  ------
    Price range of outstanding options          $8.63 - $31.63         $6.13 - $11.05            $11.05
                                                --------------         --------------            ------
                                                --------------         --------------            ------
    Price range of options terminated           $6.13 - $11.05            $  --                  $   --
                                                --------------         --------------            ------
                                                --------------         --------------            ------
WARRANTS--                                                                                   
   Warrants outstanding at beginning of                                                      
     period                                           --                     --                       7       $ 3.48
   Granted                                            --                     --                      --           --
   Exercised                                          --                     --                      (6)        2.27
   Terminated                                         --                     --                      (1)        3.99
                                                  -------                 -------                ------
   Warrants outstanding at end of period              --                     --                      --           --
   Price range of stock issuable under                                                           
     warrants                                     $   --                  $  --                   $  --
                                                  -------                 -------                ------
                                                  -------                 -------                ------
   Price range of warrants terminated             $   --                  $  --               $1.41 - $2.53
                                                  -------                 -------             --------------
                                                  -------                 -------             --------------
</TABLE>

   Statement of Financial Accounting Standards No. 123, "Accounting for 
Stock-Based Compensation" ("SFAS No. 123"), defines a fair value based method 
of accounting for employee stock options or similar 

                                      56
<PAGE>

equity instruments. However, SFAS No. 123 allows the continued measurement of 
compensation cost for such plans using the intrinsic value method prescribed 
by APB Opinion No. 25, "Accounting for Stock Issued to Employees" ("APB No. 
25"), provided that pro forma disclosures are made of net income or loss and 
net income or loss per share, assuming the fair value method of SFAS No. 123 
had been applied. The Company has elected to account for stock-based 
compensation plans under APB No. 25, under which no compensation expense is 
recognized when stock is issued at market value.

   For SFAS No. 123 purposes, the fair value of each option grant is 
estimated on the date of grant using the Black-Scholes option pricing model 
with the following weighted-average assumptions:

<TABLE>
                                             1997      1996      1995 
                                           -------   -------   -------
<S>                                        <C>       <C>       <C>
     Risk-free interest rates                6.17%     6.57%     6.16%
     Expected dividend yield rates           0.00%     0.00%     0.00%
     Expected lives                        4 years   4 years   4 years
     Expected volatility                    92.16%   110.16%    22.57%
</TABLE>

   The total fair value of options granted was computed to be approximately 
$5,594,000, $1,317,000 and $420,000 for the years ended December 31, 1997, 
1996 and 1995, respectively. These amounts are amortized ratably over the 
vesting period of the options. Cumulative compensation cost recognized in pro 
forma net income or loss with respect to options that are forfeited prior to 
vesting is adjusted as a reduction of pro forma compensation expense in the 
period of forfeiture. Pro forma stock-based compensation, net of the effect 
of forfeitures and tax, was approximately $415,000, $47,000 and $19,000 for 
1997, 1996 and 1995, respectively.
  
   Had compensation cost for these plans been determined consistent with SFAS 
No. 123, the Company's net income would have been reduced to the following pro 
forma amounts:

<TABLE>
                                             1997      1996      1995 
                                           -------   -------   -------
                                              (IN THOUSANDS, EXCEPT
                                                 PER SHARE DATA)
<S>                                        <C>       <C>       <C>
     Net Income:
          As reported                      $10,362   $5,144    $13,281
          Pro forma                          9,947    5,097     13,262
     Diluted Earnings Per Share:
          As reported                      $  0.47   $ 0.24    $  0.69
          Pro forma                           0.45     0.24       0.69
</TABLE>

  Because the SFAS No. 123 method of accounting has not been applied to options
granted prior to January 1, 1995, the resulting pro forma compensation cost may
not be representative of that to be expected in future years.

  The following table summarizes information about the stock options 
outstanding at December 31, 1997:

<TABLE>
                                           Options Outstanding      Options Exercisable
                                          ----------------------  -----------------------
                                           Weighted-
                                            Average    Weighted-                Weighted-
               Range of                    Remaining    Average                  Average
   Year        Exercise        Number     Contractual  Exercise     Number      Exercise
  Granted       Prices       Outstanding     Life       Price     Exercisable    Price
- ----------  ---------------  -----------  -----------  --------   -----------   ---------
<S>         <C>              <C>          <C>          <C>        <C>           <C>
1993-1994   $0.83 to $2.53     169,000     5.9 years    $ 0.92      169,000      $ 0.92
     1995   $2.57 to $11.05     71,000     7.5 years    $ 4.69       53,000      $ 4.48
     1996   $3.88 to $8.75     389,000     8.8 years    $ 4.10      136,000      $ 4.13
     1997   $7.12 to $31.63    675,000     9.5 years    $11.57       33,000      $12.04
                             ---------     ---------    ------      -------      ------
                             1,304,000     8.7 years    $ 7.58      391,000      $ 3.45
                             ---------     ---------    ------      -------      ------
                             ---------     ---------    ------      -------      ------
</TABLE>
                                      57
<PAGE>

                 ADVANCED ENERGY INDUSTRIES, INC. AND SUBSIDIARIES

                 SCHEDULE II -- VALUATION AND QUALIFYING ACCOUNTS

<TABLE>
                                    BALANCE AT
                                   BEGINNING OF   ADDITIONS CHARGED                 BALANCE AT    
                                     PERIOD           TO EXPENSE      DEDUCTIONS   END OF PERIOD  
                                   ------------   -----------------   ----------   -------------  
                                                            (IN THOUSANDS)
<S>                                <C>            <C>                 <C>          <C>            
Year ended December 31, 1995:
  Inventory obsolescence reserve     $  724            $  185           $  120        $  789
  Allowance for doubtful accounts       134                76               --           210
                                     ------            ------           ------        ------ 
                                     $  858            $  261           $  120        $  999
                                     ------            ------           ------        ------ 
                                     ------            ------           ------        ------ 
Year ended December 31, 1996:
  Inventory obsolescence reserve     $  789            $2,702           $1,966        $1,525
  Allowance for doubtful accounts       210                35                3           242
                                     ------            ------           ------        ------ 
                                     $  999            $2,737           $1,969        $1,767
                                     ------            ------           ------        ------ 
                                     ------            ------           ------        ------ 
Year ended December 31, 1997:
  Inventory obsolescence reserve     $1,525            $4,310           $3,117        $2,718
  Allowance for doubtful accounts       242               188                2           428
                                     ------            ------           ------        ------ 
                                     $1,767            $4,498           $3,119        $3,146
                                     ------            ------           ------        ------ 
                                     ------            ------           ------        ------ 
</TABLE>









                                      58

<PAGE>

ITEM 9.  DISAGREEMENTS ON ACCOUNTING AND FINANCIAL DISCLOSURES

Not applicable.


PART III

ITEM 10.  DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

  In accordance with General Instruction G(3), the information required by this
item (with the exception of certain information pertaining to executive
officers, which is included in Part I hereof) has been omitted and is
incorporated by reference to the Registrant's definitive Proxy Statement (the
"Proxy Statement") relating to its 1998 Annual Meeting of Stockholders.

ITEM 11.  EXECUTIVE COMPENSATION

  The Proxy Statement will be filed not later than 120 days after the end of the
fiscal year with the Securities and Exchange Commission. The information set
forth therein under "Executive Compensation and Other Information" is
incorporated herein by reference.

ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

  Information required is set forth under the caption "Security Ownership of 
Certain Beneficial Owners and Management" in the Proxy Statement and is 
incorporated herein by reference.

ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

  Information required is set forth under the caption "Certain Transactions" 
in the Proxy Statement and is incorporated herein by reference.

                                      59

<PAGE>

PART IV

ITEM 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K

<TABLE>
<S>       <C>                                                                     <C>
(a) (i)   Financial Statements:
            Report of Independent Public Accountants                              41
            Consolidated Financial Statements:
              Balance Sheets at December 31, 1997 and 1996                        42
              Statements of Income for each of the three years
                in the period ended December 31, 1997                             44
              Statements of Stockholders' Equity for each of the 
                three years in the period ended December 31, 1997                 45
              Statements of Cash Flows for each of the three years              
                in the period ended December 31, 1997                             46
          Notes to Consolidated Financial Statements                              47
    (ii)  Financial Statement Schedules for each of the three years
           in the period ended December 31, 1997
          Schedule II--Valuation and Qualifying Accounts                          58
    (iii) Exhibits:
         2.1   Share Purchase Agreement, dated August 11, 1997, among Roger 
               C. Hertel, Tower Electronics, Inc. and the Company(1)
         3.1   The Company's Restated Certificate of Incorporation(2)
         3.2   The Company's By-laws(2)
         4.1   Form of Specimen Certificate for the Company's Common Stock(2)
         4.2   The Company hereby agrees to furnish to the SEC, upon request, a
               copy of the instruments which define the rights of holders of 
               long-term debt of the Company. None of such instruments not 
               included as exhibits herein represents long-term debt in excess 
               of 10% of the consolidated total assets of the Company.
        10.1   Master Purchase Order and Sales Agreement, dated January 1, 1990,
               between Applied Materials Inc. and the Company(2)+
        10.2   Purchase Order and Sales Agreement, dated July 1, 1993, amended
               September 16, 1995 between Lam Research Corporation and the
               Company(2)+
        10.3   Purchase Agreement, dated November 1, 1995, between Eaton 
               Corporation and the Company(3)+
        10.4   Amended and Restated Loan and Security Agreement, dated as 
               of November 17, 1995, between Silicon Valley Bank and the 
               Company(2)
        10.5   Loan and Security Agreement, dated August 15, 1997, among 
               Silicon Valley Bank, Bank of Hawaii and the Company(4)
        10.6   Loan Agreement dated December 8, 1997, by and among Silicon 
               Valley Bank, as Servicing Agent and a Bank, and Bank of 
               Hawaii, as a Bank, and the Company, as borrower
        10.7   Equipment Line of Credit, dated July 11, 1994, between Silicon 
               Valley Bank and the Company(2)
        10.8   Master Lease Purchase Agreement, dated January 20, 1989, 
               as amended, between MetLife Capital Corporation and the 
               Company(2)


                                      60

<PAGE>

        10.9   Lease Purchase Agreement, dated June 11, 1992, between MetLife 
               Capital Corporation and the Company(2)
        10.10  Master Equipment Lease, dated July 15, 1993, as amended, 
               between KeyCorp Leasing Ltd. and Company(2)
        10.11  Lease, dated June 12, 1984, amended June 11, 1992, between
               Prospect Park East Partnership and the Company for property 
               in Fort Collins, Colorado(2)
        10.12  Lease, dated March 14, 1994, as amended, between Sharp Point
               Properties, L.L.C., and the Company for property in Fort 
               Collins, Colorado(2)
        10.13  Lease, dated May 19, 1995, between Sharp Point Properties, 
               L.L.C. and the Company for a building in Fort Collins, 
               Colorado(2)
        10.14  Form of Indemnification Agreement(2)
        10.15  1995 Stock Option Plan, as amended and restated*
        10.16  Employee Stock Purchase Plan(2)*
        10.17  1995 Non-Employee Directors' Stock Option Plan(2)*
        21.1   Subsidiaries of the Company(4)
        23.1   Consent of Arthur Andersen LLP, Independent Accountants
        24.1   Power of Attorney (included on the signature pages to this 
               Annual Report on Form 10-K)
        27.1   Financial Data Schedule
</TABLE>

(b)  No reports on Form 8-K were required to be filed by the Company during the
     fourth quarter of the year ended December 31, 1997.

- ---------------

     (1)  Incorporated by reference to the Company's Current Report on Form 8-K
          (File No. 0-26966), dated August 15, 1997, filed August 19, 1997, 
          as amended.

     (2)  Incorporated by reference to the Company's Registration Statement on
          Form S-1 (File No. 33-97188), filed September 20, 1995, as amended.

     (3)  Incorporated by reference to the Company's Annual Report on Form 10-K
          for the year ended December 31, 1996 (File No. 0-26966), filed March
          21, 1997, as amended.

     (4)  Incorporated by reference to the Company's Registration Statement on
          Form S-3 (File No. 333-34039), filed August 21, 1997, as amended.

     *    Compensation Plan

     +    Confidential treatment has been granted for portions of this 
          agreement.


                                      61

<PAGE>

  SIGNATURES
  
  Pursuant to the requirements of Section 13 or 15(d) of the Securities 
Exchange Act of 1934, the Registrant has duly caused this report to be signed 
on its behalf by the undersigned, thereunto duly authorized.
  
  
                              ADVANCED ENERGY INDUSTRIES, INC.

                              -------------------------------------
                              (Registrant)
  
  
                              /s/ Douglas S. Schatz
                              ----------------------
                              Douglas S. Schatz
                              President
  
  Each person whose signature appears below hereby appoints Douglas S. Schatz 
and Richard P. Beck, and each of them severally, acting alone and without the 
other, his true and lawful attorney-in-fact with authority to execute in the 
name of each such person, and to file with the Securities and Exchange 
Commission, together with any exhibits thereto and other documents therewith, 
any and all amendments to this Annual Report on Form 10-K necessary or 
advisable to enable the registrant to comply with the Securities Exchange Act 
of 1934, as amended, and any rules, regulations and requirements of the 
Securities and Exchange Commission in respect thereof, which amendments may 
make such other changes in the Annual Report on Form 10-K as the aforesaid 
attorney-in-fact deems appropriate.

  Pursuant to the requirements of the Securities Exchange Act of 1934, this 
report has been signed below by the following persons on behalf of the 
registrant and in the capacities and on the dates indicated.


Signatures               Title                                    Date
- ----------               -----                                    ----

/s/ Douglas S. Schatz    Chairman of the Board,                   March 11, 1998
- -----------------------  President and Chief Executive Officer
Douglas S. Schatz        (Principal Executive Officer)

/s/ Richard P. Beck      Vice President, Chief Financial          March 11, 1998
- -----------------------  Officer, Assistant Secretary and
Richard P. Beck          Director (Principal Financial Officer
                         and Principal Accounting Officer)

/s/ G. Brent Backman     Vice President, Special Projects         March 11, 1998
- -----------------------  Assistant Secretary and Director
G. Brent Backman         

/s/ Hollis L. Caswell    Chief Operating Officer                  March 11, 1998
- -----------------------  and Director
Hollis L. Caswell        

/s/ Elwood Spedden       Director                                 March 11, 1998
- -----------------------  
Elwood Spedden

/s/ Arthur A. Noeth      Director                                 March 11, 1998
- -----------------------  
Arthur A. Noeth

                                      62
<PAGE>

                                EXHIBIT INDEX
                                       
                                       
 2.1   Share Purchase Agreement, dated August 11, 1997, among Roger C. Hertel, 
       Tower Electronics, Inc. and the Company(1)
 3.1   The Company's Restated Certificate of Incorporation(2)
 3.2   The Company's By-laws(2)
 4.1   Form of Specimen Certificate for the Company's Common Stock(2)
 4.2   The Company hereby agrees to furnish to the SEC, upon request, a copy of 
       the instruments which define the rights of holders of long-term debt of 
       the Company. None of such instruments not included as exhibits herein 
       represents long-term debt in excess of 10% of the consolidated total 
       assets of the Company.
10.1   Master Purchase Order and Sales Agreement, dated January 1, 1990, 
       between Applied Materials Inc. and the Company(2)+
10.2   Purchase Order and Sales Agreement, dated July 1, 1993, amended 
       September 16, 1995 between Lam Research Corporation and the Company(2)+
10.3   Purchase Agreement, dated November 1, 1995, between Eaton Corporation
       and the Company(3)+
10.4   Amended and Restated Loan and Security Agreement, dated as of November
       17, 1995, between Silicon Valley Bank and the Company(2)
10.5   Loan and Security Agreement, dated August 15, 1997, among Silicon Valley 
       Bank, Bank of Hawaii and the Company(4)
10.6   Loan Agreement dated December 8, 1997, by and among Silicon Valley Bank,
       as Servicing Agent and a Bank, and Bank of Hawaii, as a Bank, and the 
       Company, as borrower
10.7   Equipment Line of Credit, dated July 11, 1994, between Silicon Valley
       Bank and the Company(2)
10.8   Master Lease Purchase Agreement, dated January 20, 1989, as amended, 
       between MetLife Capital Corporation and the Company(2)
10.9   Lease Purchase Agreement, dated June 11, 1992, between MetLife Capital
       Corporation and the Company(2)
10.10  Master Equipment Lease, dated July 15, 1993, as amended, between KeyCorp 
       Leasing Ltd. and Company(2)
10.11  Lease, dated June 12, 1984, amended June 11, 1992, between Prospect Park 
       East Partnership and the Company for property in Fort Collins, 
       Colorado(2)
10.12  Lease, dated March 14, 1994, as amended, between Sharp Point Properties, 
       L.L.C., and the Company for property in Fort Collins, Colorado(2)
10.13  Lease, dated May 19, 1995, between Sharp Point Properties, L.L.C. and 
       the Company for a building in Fort Collins, Colorado(2)
10.14  Form of Indemnification Agreement(2)
10.15  1995 Stock Option Plan, as amended and restated*
10.16  Employee Stock Purchase Plan(2)*

                                      63
<PAGE>

10.17  1995 Non-Employee Directors' Stock Option Plan(2)*
21.1   Subsidiaries of the Company(4)
23.1   Consent of Arthur Andersen LLP, Independent Accountants
24.1   Power of Attorney (included on the signature pages to this Annual Report 
       on Form 10-K)
27.1   Financial Data Schedule

- ---------------

     (1)  Incorporated by reference to the Company's Current Report on Form 8-K
          (File No. 0-26966), dated August 15, 1997, filed August 19, 1997, as
          amended.

     (2)  Incorporated by reference to the Company's Registration Statement on 
          Form S-1 (File No. 33-97188), filed September 20, 1995, as amended.

     (3)  Incorporated by reference to the Company's Annual Report on Form 10-K
          for the year ended December 31, 1996 (File No. 0-26966), filed March 
          21, 1997, as amended.

     (4)  Incorporated by reference to the Company's Registration Statement on 
          Form S-3 (File No. 333-34039), filed August 21, 1997, as amended.

      *    Compensation Plan

      +    Confidential treatment has been granted for portions of this 
           agreement.


                                      64


<PAGE>
                                       
                       ADVANCED ENERGY INDUSTRIES, INC.


                                LOAN AGREEMENT

<PAGE>


                              TABLE OF CONTENTS
                                                                           Page

1.   DEFINITIONS AND CONSTRUCTION                                            1
     1.1  Definitions                                                        1
     1.2  Accounting Terms                                                   7

2.   LOAN AND TERMS OF PAYMENT                                               7
     2.1  Advances                                                           7
     2.2  Foreign Exchange Contract; Foreign Exchange Settlements           10
     2.3  Term Conversion Option                                            10
     2.4  Overadvances                                                      11
     2.5  Interest Rates, Payments, and Calculations                        11
     2.6  Crediting Payments                                                12
     2.7  Bank Expenses                                                     12
     2.8  Additional Costs                                                  12
     2.9  Conversion/Continuation of Advances                               12
     2.10 Additional Requirements/Provisions Regarding LIBOR Rate 
          Advances or Optional Currency Rate Advances                       13
     2.11 Term                                                              15

3.   CONDITIONS OF LOANS                                                    15
     3.1  Conditions Precedent to Initial Advance                           15
     3.2  Conditions Precedent to all Advances                              15

4.   REPRESENTATIONS AND WARRANTIES                                         16
     4.1  Due Organization and Qualification                                16
     4.2  Due Authorization; No Conflict                                    16
     4.3  No Prior Encumbrances                                             16
     4.4  Merchantable Inventory                                            16
     4.5  Litigation                                                        16
     4.6  No Material Adverse Change in Financial Statements                16
     4.7  Solvency                                                          16
     4.8  Regulatory Compliance                                             16
     4.9  Environmental Condition                                           17
     4.10 Taxes                                                             17
     4.11 Subsidiaries                                                      17
     4.12 Government Consents                                               17
     4.13 Full Disclosure                                                   17

5.   AFFIRMATIVE COVENANTS                                                  17
     5.1  Good Standing                                                     17
     5.2  Government Compliance                                             18
     5.3  Financial Statements, Reports, Certificates                       18
     5.4  Inventory; Returns                                                18
     5.5  Taxes                                                             18
     5.6  Insurance                                                         18
     5.7  Quick Ratio                                                       19
     5.8  Debt-Tangible Net Worth Ratio                                     19
     5.9  Tangible Net Worth                                                19
     5.10 Profitability                                                     19
     5.11 Debt Service Coverage                                             19
     5.12 Further Assurances                                                19

                                       i

<PAGE>

6.   NEGATIVE COVENANTS                                                     19
     6.1  Dispositions                                                      19
     6.2  Change in Business or Control                                     19
     6.3  Mergers or Acquisitions                                           19
     6.4  Indebtedness                                                      20
     6.5  Encumbrances                                                      20
     6.6  Distributions                                                     20
     6.7  Investments                                                       20
     6.8  Transactions with Affiliates                                      20
     6.9  Subordinated Debt                                                 20
     6.10 Compliance                                                        20

7.   EVENTS OF DEFAULT                                                      20
     7.1  Payment Default                                                   20
     7.2  Covenant Default                                                  20
     7.3  Material Adverse Change                                           21
     7.4  Attachment                                                        21
     7.5  Insolvency                                                        21
     7.6  Other Agreements                                                  21
     7.7  Judgments                                                         21
     7.8  Misrepresentations                                                21

8.   BANKS' RIGHTS AND REMEDIES                                             21
     8.1  Rights and Remedies                                               21
     8.2  Bank Expenses                                                     22
     8.3  Remedies Cumulative                                               22
     8.4  Demand; Protest                                                   22

9.   NOTICES                                                                22

10.  CHOICE OF LAW AND VENUE; JURY TRIAL WAIVER                             23

11.  INTERCREDITOR PROVISIONS                                               23
     11.1 Proportionate Interests                                           23
     11.2 Designation of Service Agent                                      23
     11.3 Resignation                                                       24
     11.4 Servicing Agent as Bank                                           24
     11.5 No Agency                                                         24
     11.6 No Reliance                                                       24

12.  GENERAL PROVISIONS                                                     24
     12.1 Successors and Assigns                                            24
     12.2 Indemnification                                                   24
     12.3 Time of Essence                                                   24
     12.4 Severability of Provisions                                        24
     12.5 Amendments in Writing, Integration                                24
     12.6 Counterparts                                                      25
     12.7 Survival                                                          25
     12.8 Confidentiality                                                   25
     12.9 Optional Currency Rate Instruments                                25

                                      ii

<PAGE>

     This LOAN AGREEMENT is entered into as of December 8, 1997 by and among 
SILICON VALLEY BANK ("SVB") as Servicing Agent and a Bank and BANK OF HAWAII 
("BofH;" SVB and BofH are referred to individually herein as a "Bank," and 
collectively as the "Banks") and ADVANCED ENERGY INDUSTRIES, INC., a Delaware 
corporation ("AEI" or "Borrower").

                                       
                                   RECITALS

     Borrower wishes to obtain credit from time to time from Banks, and Banks 
desire to advance credit to Borrower. This Agreement sets forth the terms on 
which Banks will lend to Borrower, and Borrower will repay the advances to 
Banks.

                                  AGREEMENT

     The parties agree as follows:

     1.     DEFINITIONS AND CONSTRUCTION

       1.1  Definitions.  As used in this Agreement, the following terms 
shall have the following definitions:

               "Advance" or "Advances" means a cash advance under the 
Revolving Facility.

               "Affiliate" means, with respect to any Person, any Person that 
owns or controls directly or indirectly such Person, any Person that controls 
or is controlled by or is under common control with such Person, and each of 
such Person's senior executive officers, directors, and partners.

               "Bank Expenses" means all:  reasonable costs or expenses 
(including reasonable attorneys' fees and expenses) incurred in connection 
with the preparation, negotiation, administration, and enforcement of the 
Loan Documents; and each Bank's reasonable attorneys' fees and expenses 
incurred in amending, enforcing or defending the Loan Documents, whether or 
not suit is brought.

               "Borrower's Books" means all of Borrower's books and records 
relating to its property.

               "Business Day" means a day of the year (a) that is not a 
Saturday, Sunday or other day on which banks in the States of California or 
Hawaii or the City of London are authorized or required to close and (b) on 
which dealings are carried on in the interbank market in which Bank 
customarily participates and, (c) with respect to Advances and payments in an 
Optional Currency or any requests or notices related thereto, that is not a 
day on which the BofH branch or other banks in the country of such Optional 
Currency are authorized or required to close.

               "Closing Date" means the date of this Agreement.

               "Code" means the California Uniform Commercial Code.

               "Committed Line" means Thirty Million Dollars ($30,000,000).

               "Contingent Obligation" means, as applied to any Person, any 
direct or indirect liability, contingent or otherwise, of that Person with 
respect to (i) any indebtedness, lease, dividend, letter of credit or other 
obligation of another, including, without limitation, any such obligation 
directly or indirectly guaranteed, endorsed, co-made or discounted or sold 
with recourse by that Person, or in respect of which that Person is otherwise 
directly or indirectly liable; (ii) any obligations

                                       1
<PAGE>


with respect to undrawn letters of credit issued for the account of that 
Person; and (iii) all obligations arising under any interest rate, currency 
or commodity swap agreement, interest rate cap agreement, interest rate 
collar agreement, or other agreement or arrangement designated to protect a 
Person against fluctuation in interest rates, currency exchange rates or 
commodity prices; provided, however, that the term "Contingent Obligation" 
shall not include endorsements for collection or deposit in the ordinary 
course of business.  The amount of any Contingent Obligation shall be deemed 
to be an amount equal to the stated or determined amount of the primary 
obligation in respect of which such Contingent Obligation is made or, if not 
stated or determinable, the maximum reasonably anticipated liability in 
respect thereof as determined by such Person in good faith; provided, 
however, that such amount shall not in any event exceed the maximum amount of 
the obligations under the guarantee or other support arrangement.

               "Credit Extension" means an Advance, a Letter of Credit or a 
Foreign Exchange Contract.

               "Current Liabilities" means, as of any applicable date, all 
amounts that should, in accordance with GAAP, be included as current 
liabilities on the consolidated balance sheet of Borrower and its 
Subsidiaries, excluding all outstanding Advances made under Section 2.1 
hereof, but including all other Indebtedness that is payable upon demand or 
within one year from the date of determination thereof unless such 
Indebtedness is renewable or extendable at the option of Borrower or any 
Subsidiary to a date more than one year from the date of determination.

               "Daily Balance" means the amount of the Obligations owed at 
the end of a given day.

               "EBITDA" means, for any period, earnings before interest 
expense, taxes, depreciation and amortization.

               "Equipment" means machinery, equipment, tenant improvements, 
furniture, fixtures, vehicles, tools, parts and attachments.

               "Equivalent Amount" means the equivalent in United States 
Dollars of an Optional Currency, calculated at the spot rate for the purchase 
of such Optional Currency by BofH.

               "ERISA" means the Employment Retirement Income Security Act of 
1974, as amended, and the regulations thereunder.

               "GAAP" means generally accepted accounting principles as in 
effect from time to time.

               "Indebtedness" means (a) all indebtedness for borrowed money 
or the deferred purchase price of property or services, including without 
limitation reimbursement and other obligations with respect to surety bonds 
and letters of credit, (b) all obligations evidenced by notes, bonds, 
debentures or similar instruments, (c) all capital lease obligations and (d) 
all Contingent Obligations.

               "Insolvency Proceeding" means any proceeding commenced by or 
against any person or entity under any provision of the United States 
Bankruptcy Code, as amended, or under any other bankruptcy or insolvency law, 
including assignments for the benefit of creditors, extension generally with 
all or substantially all creditors, or proceedings seeking general 
reorganization, arrangement, or other relief.

               "Interest Period" means for each LIBOR Rate Advance, a period 
of approximately one, three or six months as Borrower may elect, provided 
that the last day of an 

                                       2
<PAGE>


Interest Period for a LIBOR Rate Advance shall be determined in accordance 
with the practices, of the LIBOR interbank market as from time to time in 
effect, provided, further, in all cases such period shall expire not later 
than the applicable Revolving Maturity Date.

               "Inventory" means all present and future inventory in which 
Borrower has any interest, including merchandise, raw materials, parts, 
supplies, packing and shipping materials, work in process and finished 
products intended for sale or lease or to be furnished under a contract of 
service, of every kind and description now or at any time hereafter owned by 
or in the custody or possession, actual or constructive, of Borrower, 
including such inventory as is temporarily out of its custody or possession 
or in transit and including any returns upon any accounts or other proceeds, 
including insurance proceeds, resulting from the sale or disposition of any 
of the foregoing and any documents of title representing any of the above, 
and Borrower's Books relating to any of the foregoing.

               "Investment" means any beneficial ownership of (including 
stock, partnership interest or other securities) any Person, or any loan, 
advance or capital contribution to any Person.

               "IRC" means the Internal Revenue Code of 1986, as amended, and 
the regulations thereunder.

               "Issuing Bank" means the Bank issuing a Letter of Credit 
pursuant to Section 2.1.1.  SVB shall be the issuing bank, except that BofH 
shall be the Issuing Bank if (i) SVB is unable to issue a Letter of Credit or 
(ii) a Letter of Credit issued by SVB would require confirmation by another 
bank under circumstances in which a Letter of Credit issued by BofH would not 
require confirmation.

               "Letter of Credit" means a Letter of Credit issued pursuant to 
Section 2.1.1.

               "LIBOR Base Rate" means, for any Interest Period for a LIBOR 
Rate Advance, the rate of interest per annum determined by SVB to be the per 
annum rate of interest at which deposits in United States Dollars are offered 
to SVB in the London interbank market in which SVB customarily participates 
at 11:00 A.M. (local time in such interbank market) three (3) Business Days 
before the first day of such Interest Period for a period approximately equal 
to such Interest Period and in an amount approximately equal to the amount of 
such Advance.

               "LIBOR Rate" shall mean, for any Interest Period for a LIBOR 
Rate Advance, a rate per annum (rounded upwards, if necessary, to the nearest 
1/16 of 1%) equal to (i) the LIBOR Base Rate for such Interest Period divided 
by (ii) 1 minus the Reserve Requirement for such Interest Period.

               "LIBOR Rate Advances" means any Advances made or a portion 
thereof on which interest is payable based on the LIBOR Rate in accordance 
with the terms hereof.

               "Lien" means any mortgage, lien, deed of trust, security 
interest or other encumbrance.

               "Loan Documents" means, collectively, this Agreement, any note 
or notes executed by Borrower, and any other agreement entered into between 
Borrower and Banks in connection with this Agreement, all as amended or 
extended from time to time.

               "Material Adverse Effect" means a material adverse effect on 
(i) the business operations or financial condition of Borrower and its 
Subsidiaries taken as a whole or (ii) the ability of Borrower, taken as a 
whole, to repay the Obligations.

               "Maturity Date" means December 7, 2003.

                                       3
<PAGE>


               "Obligations" means all debt, principal, interest, Bank 
Expenses and other amounts owed to the Banks by Borrower pursuant to this 
Agreement, whether absolute or contingent, due or to become due (including 
any interest accruing after the commencement of an Insolvency Proceeding and 
any interest that would have accrued but for the commencement of an 
Insolvency Proceeding), now existing or hereafter arising.

               "Operating Loss" means an operating loss under GAAP, 
specifically excluding non-cash losses arising from business-combination 
activities.

               "Optional Currency" means the lawful currency of Japan.

               "Optional Currency Rate Advance" means an Advance in an 
Optional Currency, made pursuant to and in accordance with Section 2.1(c).

               "Optional Currency Rate" means, with respect to Advances in 
Japanese Yen, the Japanese Short Term Prime Rate, as quoted by the office of 
BofH located in Japan.

               "Optional Currency Rate Instruments" means the promissory 
notes and other agreements and instruments requested by Banks as a condition 
to making Optional Currency Rate Advances.

               "Percentage Share" means, as to each Bank, the percentage 
calculated in accordance with Section 12.1 hereof.

               "Periodic Payments" means all installments or similar 
recurring payments that Borrower may now or hereafter become obligated to pay 
to either Bank pursuant to the terms and provisions of any instrument, or 
agreement now or hereafter in existence between Borrower and such Bank.

               "Permitted Indebtedness" means:

               (a)  Indebtedness of Borrower in favor of Banks arising under 
this Agreement or any other Loan Document;

               (b)  Subordinated Debt;

               (c)  Capital leases or indebtedness incurred solely to 
purchase equipment, which is secured in accordance with clause (c) of 
"Permitted Liens" below and is not in excess of the lesser of the purchase 
price of such equipment or the fair market value of such equipment on the 
date of acquisition, provided the outstanding principal balance of such 
Indebtedness incurred in any fiscal year shall not exceed Two Million Five 
Hundred Thousand Dollars ($2,500,000);

               (d)  Indebtedness to trade creditors incurred in the ordinary 
course of business;

               (e)  Indebtedness set forth on the Schedule;

               (f)  Indebtedness of Borrower to any Subsidiary and Contingent 
Obligations of any Subsidiary with respect to obligations of Borrower 
(provided that the primary obligations are not prohibited hereby), and 
Indebtedness of any Subsidiary to any other Subsidiary and Contingent 
Obligations of any Subsidiary with respect to obligations of any other 
Subsidiary (provided that the primary obligations are not prohibited hereby), 
and Indebtedness consisting of Investments that are "Permitted Investments" 
under clause (l) of the definition of Permitted Investments;

                                       4
<PAGE>

               (g)  Indebtedness secured by Permitted Liens;

               (h)  Extensions, refinancings, modifications, amendments and 
restatements of any of items of Permitted Indebtedness (a), (b), (c), (e) and 
(g) above, provided that the principal amount thereof is not increased or the 
terms thereof are not modified to impose more burdensome terms upon Borrower 
or its Subsidiaries, as the case may be.

               "Permitted Investment" means:

               (a)  Investments existing on the Closing Date disclosed on the 
Schedule;

               (b)  Investments made or obtained through either Bank that 
consist of (i) marketable direct obligations issued or unconditionally 
guaranteed by the United States of America or any agency or any State thereof 
maturing within one (1) year from the date of acquisition thereof, (ii) 
commercial paper maturing no more than one (1) year from the date of creation 
thereof and currently having the highest rating obtainable from either 
Standard & Poor's Corporation or Moody's Investors Service, Inc., (iii) 
certificates of deposit maturing no more than one (1) year from the date of 
investment therein issued by either Bank or (iv) that are permitted by 
Borrower's investment policy, as amended from time to time by its board of 
directors, provided that such investment policy (and any such amendment 
thereto) has been approved by the Banks, which approval shall not be 
unreasonably withheld; and

               (c)  Investments made in connection with the merger or 
consolidation with another Person or the acquisition of all or substantially 
all of the capital stock or property of another Person where the sole 
consideration paid by Borrower or any Subsidiary consists of Borrower's 
equity securities and cash and the aggregate value of such equity securities 
and cash paid after the date hereof does not exceed Fifteen Percent (15%) of 
Borrower's Tangible Net Worth immediately prior to the date such Investment 
is made.

               "Permitted Liens" means the following:

               (a)  Any liens existing as of the date hereof and disclosed on 
the Schedule;

               (b)  Liens for taxes, fees, assessments or other governmental 
charges or levies, either not delinquent or being contested in good faith by 
appropriate proceedings, provided the same have no priority over any of 
Banks' security interests;

               (c)  Liens (i) upon or in any equipment acquired by Borrower 
or any of its Subsidiaries after the date hereof to secure the purchase price 
of such equipment or indebtedness incurred solely for the purpose of 
financing the acquisition of such equipment, or (ii) existing on such 
equipment at the time of its acquisition, provided that the Lien is confined 
solely to the property so acquired and improvements thereon, and the proceeds 
of such equipment;

               (d)  Easements, reservations, rights-of-way, restrictions, 
minor defects or irregularities in title and other similar charges or 
encumbrances affecting real property not constituting a Material Adverse 
Effect;

               (e)  Liens incurred in connection with the extension, renewal 
or refinancing of the indebtedness secured by Liens of the type described in 
clauses (a), (c), and (d) above, provided that any extension, renewal or 
replacement Lien shall be limited to the property encumbered by the existing 
Lien and the principal amount of the indebtedness being extended, renewed or 
refinanced does not increase.

                                       5
<PAGE>

               "Person" means any individual, sole proprietorship, 
partnership, joint venture, trust, unincorporated organization, association, 
corporation, institution, public benefit corporation, firm, joint stock 
company, estate, entity or governmental agency.

               "Prime Rate" means the variable rate of interest, per annum, 
most recently announced by SVB as its "prime rate," or BofH as its "base 
rate," as applicable to the Advances made hereunder by each such Bank, 
whether or not such announced rate is the lowest rate available from such 
Bank.

               "Prime Rate Advances" means any Advances made or a portion 
thereof on which interest is payable based on the Prime Rate in accordance 
with the terms hereof.

               "Quick Assets" means, at any date as of which the amount 
thereof shall be determined, the consolidated cash, cash-equivalents, 
accounts receivable and investments, with maturities not to exceed 90 days, 
of Borrower determined in accordance with GAAP.

               "Regulatory Change" means, with respect to Bank, any change on 
or after the date of this Agreement in United States federal, state or 
foreign laws or regulations, including Regulation D, or the adoption or 
making on or after such date of any written interpretations, directives or 
requests applying to a class of lenders including Bank of or under any United 
States federal or state, or any foreign, laws or regulations (whether or not 
having the force of law) by any court or governmental or monetary authority 
charged with the interpretation or administration thereof.

               "Reserve Requirement" means, for any Interest Period, the 
average maximum rate at which reserves (including any marginal, supplemental 
or emergency reserves) are required to be maintained during such Interest 
Period under Regulation D against "Eurocurrency liabilities" (as such term is 
used in Regulation D) by member banks of the Federal Reserve System.  Without 
limiting the effect of the foregoing, the Reserve Requirement shall reflect 
any other reserves required to be maintained by Bank by reason of any 
Regulatory Change against (i) any category of liabilities which includes 
deposits by reference to which the LIBOR Rate is to be determined as provided 
in the definition of "LIBOR Base Rate" or (ii) any category of extensions of 
credit or other assets which include Advances.

               "Responsible Officer" means each of the Chief Executive 
Officer, the Chief Financial Officer, the Treasurer and the Controller of 
Borrower.

               "Revolving Facility" means the facility under which a Borrower 
may request Bank to issue cash advances, as specified in Section 2.1 hereof.

               "Revolving Maturity Date" means the day before the third 
anniversary of the Closing Date.

               "Schedule" means the schedule of exceptions attached hereto.

               "Servicing Agent" means SVB or such entity as may succeed to 
such position.

               "Subordinated Debt" means any debt incurred by a Borrower that 
is subordinated to the Obligations under this Agreement on terms reasonably 
acceptable to Banks.

               "Subsidiary" means any corporation or partnership in which (i) 
any general partnership interest or (ii) more than 50% of the stock of which 
by the terms thereof ordinary voting power to elect the Board of Directors, 
managers or trustees of the entity shall, at the time as of which any 
determination is being made, is owned by Borrower, either directly or through 
an Affiliate.

                                       6
<PAGE>

               "Tangible Net Worth" means at any date as of which the amount 
thereof shall be determined, the consolidated total assets of Borrower minus, 
without duplication, (i) the sum of any amounts attributable to (a) goodwill, 
(b) intangible items such as unamortized debt discount and expense, patents, 
trade and service marks and names, copyrights and research and development 
expenses except prepaid expenses, and (c) all reserves not already deducted 
from assets, and (ii) Total Liabilities.

               "Term Advance" means an Advance converted into a term loan 
pursuant to Section 2.3.

               "Total Liabilities" means at any date as of which the amount 
thereof shall be determined, all obligations that should, in accordance with 
GAAP be classified as liabilities on the consolidated balance sheet of 
Borrower, including in any event all Indebtedness, but specifically excluding 
Subordinated Debt.

       1.2  Accounting Terms.  All accounting terms not specifically defined 
herein shall be construed in accordance with GAAP and all calculations made 
hereunder shall be made in accordance with GAAP.  When used herein, the terms 
"financial statements" shall include the notes and schedules thereto.

     2.     LOAN AND TERMS OF PAYMENT

       2.1  Advances.  Subject to the terms and conditions of this Agreement, 
each Bank severally will make Advances to Borrower as set forth herein.  BofH 
shall make all of the Advances made in an Optional Currency.  Each Bank 
severally will make its Percentage Share of Advances such that the aggregate 
amount of each Bank's Advances (including Optional Rate Advances) under this 
Agreement shall not exceed such Bank's Percentage Share of the lesser of (i) 
Twenty Million Dollars ($20,000,000) or (ii) the Committed Line minus the 
face amount of the outstanding Letters of Credit minus the Foreign Exchange 
Reserve, provided that the aggregate outstanding Advances in an Optional 
Currency shall not exceed Five Million Dollars ($5,000,000).  At the request 
of Borrower, each of the sublimits of Five Million Dollars ($5,000,000) for 
Optional Currency Rate Advances and Foreign Exchange Contracts may be reduced 
from time to time, and the sublimit for Advances concurrently increased by 
the amount of such reduction, provided that the sum of the sublimits for 
Advances, Optional Currency Rate Advances, Letters of Credit and Foreign 
Exchange Contracts shall at no time exceed Thirty Million Dollars 
($30,000,000), and the sublimits for Optional Currency Rate Advances or 
Foreign Exchange Contracts shall not exceed Five Million Dollars ($5,000,000) 
each.  Each such adjustment shall be in an amount not less than 
[Five Hundred Thousand Dollars ($500,000)], and shall be effected by a 
written notice delivered to each Bank not later than five (5) Business Days 
before the effective date of such adjustment.  As a condition to any 
adjustment, the Advances, Optional Currency Rate Advances, Letters of Credit 
and Foreign Exchange Contracts outstanding on such effective date shall be 
within the corresponding sublimits, as adjusted.  Subject to the terms and 
conditions of this Agreement, amounts borrowed pursuant to this Section 2.1 
may be repaid and reborrowed at any time prior to the Revolving Maturity Date.

         (a)  Requests for Advances.  Whenever Borrower desires an Advance, 
Borrower will notify Servicing Agent by facsimile transmission or telephone 
no later than 11:00 a.m. California time on the Business Day that a Prime 
Rate Advance is to be made, noon California time on the Business Day that is 
two (2) Business Days in the country of the Optional Currency prior to the 
Business Day on which an Optional Currency Rate Advance is to be made, and 
noon California time on the Business Day that is three (3) Business Days 
prior to the Business Day on which a LIBOR Rate Advance is to be made.  
Servicing Agent shall promptly deliver such notice to the Banks.  Each Bank 
may make Advances under this Agreement, based upon instructions received by 
Servicing Agent from a Responsible Officer, or without instructions if in 
Servicing Agent's discretion such Advances are necessary to meet Obligations 
under this Agreement which have become due and remain unpaid.

                                       7

<PAGE>


Each Bank shall be entitled to rely on any notice by telephone or otherwise
given by a person who Servicing Agent reasonably believes to be a Responsible
Officer, and Borrower shall indemnify and hold such Bank harmless for any
damages or loss suffered by such Bank as a result of such reliance.  Such
Bank will wire or credit, as appropriate, the amount of Advances in United
States Dollars made under this Section 2.1 to Borrower's deposit account held
by Servicing Agent, as specified by Borrower, or, as to an Advance in an
Optional Currency, to the Borrower's deposit account of Advanced Energy
Industries, K.K., Borrower's wholly-owned Japanese subsidiary, held by the
branch office of BofH in Japan.

     Each such notice shall specify:

           (i)   the date such Advance is to be made, which shall be a
Business Day;

           (ii)  the amount of such Advance;

           (iii) whether such Advance is to be a Prime Rate Advance, an
Optional Currency Rate Advance, or a LIBOR Rate Advance;

           (iv)  if the Advance is to be a LIBOR Rate Advance, the Interest
Period for such Advance; and

           (v)   if the Advance is to be in an Optional Currency, the type of
currency.

Each written request for an Advance, and each confirmation of a telephone
request for such an Advance, shall be in the form of a Borrowing Certificate
in the form of Exhibit B executed by Borrower on behalf of Borrower.

         (b)  Prime Rate Advances.  Each Prime Rate Advance shall be in an
amount not less than Twenty Five Thousand Dollars ($25,000).  The outstanding
principal balance of each Prime Rate Advance shall bear interest until
principal is due (computed daily on the basis of a 360 day year and actual
days elapsed), at a rate per annum equal to the Prime Rate minus One and One
Quarter of One Percent (1.25%).  Borrower shall pay the entire outstanding
principal amount of each Prime Rate Advance on the Revolving Maturity Date.

         (c)  Optional Currency Rate Advances.  Each Optional Currency Rate
Advance shall be in an Equivalent Amount of not less than Fifty Thousand
Dollars ($50,000).  The outstanding principal balance of each Optional
Currency Rate Advance shall bear interest until principal is due (computed
daily on the basis of a 360 day year and actual days elapsed or, where
required by any law or is customary in the country of the Optional Currency,
a 365 day year) at a rate per annum equal to the Optional Currency Rate plus
100 basis points for such Optional Currency Rate Advance.  The Optional
Currency Rate Advances shall be evidenced by this Agreement and by the
Optional Currency Rate Instruments.  Borrower shall pay the entire
outstanding principal amount of each Optional Currency Rate Advance on the
Revolving Maturity Date.

         (d)  LIBOR Rate Advances.  Each LIBOR Rate Advance shall be in an
amount or an Equivalent Amount of not less than Five Hundred Thousand Dollars
($500,000).  The outstanding principal balance of each LIBOR Rate Advance
shall bear interest until principal is due (computed daily on the basis of a
360 day year and actual days elapsed) at a rate per annum equal to the LIBOR
Rate plus 150 basis points for such LIBOR Rate Advance.  The entire
outstanding principal amount of each LIBOR Rate Advance shall be due and
payable on the last day of the LIBOR Rate Interest Period for such LIBOR Rate
Advance and on the Revolving Maturity Date.

                                      8
<PAGE>


         (e)  Prepayment of the Advances.  Borrower may at any time prepay
any Prime Rate Advance, any Optional Currency Rate Advance, or any LIBOR Rate
Advance, in full or in part.  Each partial prepayment for a LIBOR Rate
Advance shall be in an amount not less than Two Hundred Fifty Thousand
Dollars ($250,000). Each prepayment shall be made upon the irrevocable
written or telephone notice of Borrower received by Servicing Agent not later
than 10:00 a.m. California time on the date of the prepayment of a Prime Rate
Advance, not less than two Business Days in the country of the Optional
Currency prior to the date of the prepayment of an Optional Currency Rate
Advance, and not less than three (3) Business Days prior to the date of the
prepayment of a LIBOR Rate Advance.  The notice of prepayment shall specify
the date of the prepayment, the amount of the prepayment, and the Advance or
Advances to be prepaid.  Each prepayment of an Optional Currency Rate Advance
for which the term and interest rate have been fixed or LIBOR Rate Advance
shall be accompanied by the payment of accrued interest on the amount prepaid
and any amount required by Section 2.12.

         (f)  Fees.  On each anniversary of the Closing Date, Borrower shall
pay SVB a non-usage fee equal to One Fourth of One Percent (0.25%) of the
difference between the Committed Line and the average Daily Balance during
the prior year.

         (g)  Term.  The Revolving Facility shall terminate on the Revolving
Maturity Date, at which time all Advances under this Section 2.1 shall be
immediately due and payable.

         2.1.1     Letters of Credit.

              (a)  At Borrower's written request, Issuing Bank shall issue
Letters of Credit for Borrower's account.  Each Bank severally agrees to
participate in Letters of Credit, in accordance with such Bank's Percentage
Share.

              (b)  Issuing Bank shall issue the Letter of Credit upon receipt
of Borrower's written request and Issuing Bank's standard form of
application, stating (a) the date Borrower wishes to receive the Letter of
Credit (which shall be a Business Day); (b) the requested amount of such
Letter of Credit; (c) the aggregate amount of all Advances and Letters of
Credit then outstanding; (d) if appropriate, the conditions requested by
Borrower under which the Letter of Credit may be drawn upon; and (e) any
other information Issuing Bank might need to issue the Letter of Credit.
Issuing Bank shall promptly notify all of the Banks upon receipt of a request
for a Letter of Credit.

              (c)  The maximum aggregate obligation at any one time for
undrawn and drawn but unreimbursed Letters of Credit shall be Five Million
Dollars ($5,000,000).  Each Letter of Credit shall be issued pursuant to the
terms and conditions of this Agreement and of the Issuing Bank's standard
form of application and security agreement for letters of credit.  Each
Letter of Credit shall (a) expire no later than the Revolving Maturity Date;
and (b) be otherwise in form and substance satisfactory to Issuing Bank.
Upon issuing a Letter of Credit, the Issuing Bank shall immediately notify
the other Bank of such issuance and shall, on a continuing basis, keep the
other Bank informed of the drawn and undrawn but unreimbursed amount of each
Letter of Credit for so long as such Letter of Credit is outstanding.
Borrower shall pay Issuing Bank its standard fees on account of each Letter
of Credit issued hereunder, which shall be shared by Banks in accordance with
their agreement.  On the day on which Issuing Bank honors any drawing made by
the beneficiary of a Letter of Credit, Borrower shall pay to Issuing Bank the
full amount of the drawing so honored, or at Borrower's option, shall treat
the amount of such drawing as an Advance under Section 2.1.  The obligation
to reimburse Issuing Bank for the amount of such drawing is absolute,
unconditional, and irrevocable.

                                     9
<PAGE>


              (d)  Borrower may request that Issuing Bank issue a Letter of
Credit payable in a currency other than United States Dollars.  If a demand
for payment is made under any such Letter of Credit, Issuing Bank shall treat
such demand as an advance to Borrower of the Equivalent Amount thereof.  Upon
the issuance of any Letter of Credit payable in a currency other than United
States Dollars, Banks shall create a reserve under the Committed Line for
letters of credit against fluctuations in currency exchange rates, in an
amount equal to ten percent (10%) of the face amount of such Letter of
Credit.  The amount of such reserve may be amended by Banks from time to time
to account for fluctuations in the exchange rate.  The availability of funds
under the Committed Line shall be reduced by the amount of such reserve for
so long as such Letter of Credit remains outstanding.

       2.2      Foreign Exchange Contract; Foreign Exchange Settlements.

         (a)  Subject to the terms of this Agreement, Borrower may utilize up
to Five Million Dollars ($5,000,000) for Exchange Contracts, pursuant to
which the Japanese branch office of BofH shall sell to or purchase from
Borrower foreign currency on a spot or future basis.  All Exchange Contracts
must provide for delivery of settlement on or before the Maturity Date.  The
limit available at any time shall be reduced by the following amounts (the
"Foreign Exchange Reserve") on each day (the "Determination Date"):  (i) on
all outstanding Exchange Contracts on which delivery is to be effected or
settlement allowed more than two business days from the Determination Date,
10% of the gross amount of the Exchange Contracts.  In lieu of the Foreign
Exchange Reserve for 100% of the gross amount of any Exchange Contract,
Borrower may request that Banks treat such amount as an Advance under the
Committed Line.

         (b)  Banks may, in their discretion, terminate the Exchange
Contracts at any time (a) that an Event of Default occurs or (b) that there
is no sufficient availability under the Committed Line and Borrower does not
have available funds in its bank account to satisfy the Foreign Exchange
Reserve.  If Banks terminate the Exchange Contracts, and without limitation
of any applicable indemnities, Borrower shall reimburse Banks for any and all
fees, costs and expenses relating thereto or arising in connection therewith.

         (c)  Borrower shall not permit the total gross amount of all
Exchange Contracts on which delivery is to be effected and settlement allowed
in any two business day period to be more than Five Million Dollars
($5,000,000) nor shall Borrower permit the total gross amount of all Exchange
Contracts to which Borrower is a party, outstanding at any one time, to
exceed Five Million Dollars ($5,000,000).

         (d)  As a condition to requesting any Exchange Contracts, Borrower
shall request each Exchange Contract by written notice to Servicing Agent,
and shall execute all standard form applications and agreements of Banks in
connection with the Exchange Contracts and, without limiting any of the terms
of such applications and agreements, Borrower will pay all standard fees and
charges of Banks in connection with the Exchange Contracts.

       2.3      Term Conversion Option.

         (a)  Subject to and upon the terms and conditions of this Agreement,
at any time from the date hereof through the Revolving Maturity Date,
Borrower may elect to convert all or any portion of the outstanding Advances
in an aggregate amount not to exceed Ten Million Dollars ($10,000,000) into
Term Advances.

         (b)  Interest shall continue to accrue on each Term Advance at the
rate applicable prior to the effective date of conversion, and shall continue
to be payable on the seventh day of each calendar month thereafter.  Each
Term Advance will be payable in twelve (12) equal

                             10
<PAGE>


quarterly installments of principal, beginning on the _____ day of the fiscal
quarter immediately following the date of conversion, and continuing on the
_____ day of each subsequent fiscal quarter.

         (c)  When Borrower desires to convert an Advance into a Term
Advance, Borrower shall notify Servicing Agent (which notice shall be
irrevocable) by facsimile transmission to be received no later than 3:00 p.m.
Pacific time three (3) Business Days before the day on which the conversion
is to be effected.  Such notice shall be in a form reasonably acceptable to
Servicing Agent, and shall be signed by a Responsible Officer or its designee.

         (d)  Borrower may prepay all or any portion of any Term Advance
without penalty or premium, provided that any prepayment of a Term Advance
bearing a fixed rate of interest shall be accompanied by a prepayment fee
equal to the breakage costs advised by Banks at the time of such prepayment.

       2.4     Overadvances.  If, at any time or for any reason, the sum of
(i) Advances owed by Borrower to Banks pursuant to Section 2.1 of this
Agreement plus (ii) the Foreign Exchange Reserve plus (iii) the face amount
of any outstanding Letters of Credit is greater than the Committed Line,
Borrower shall immediately pay to SVB, in cash, the amount of such excess,
for payment to the Banks according to their respective Percentage Shares.
If, at any time or for any reason, the Equivalent Amount of Outstanding
Optional Currency Advances exceeds Five Million Dollars ($5,000,000),
Borrower shall immediately pay to BofH the amount of such excess.

       2.5      Interest Rates, Payments, and Calculations.

         (a)  Interest Rate.  Except as set forth in Section 2.5(b), any
Obligations shall bear interest, on the average Daily Balance, at the rates
specified in the provisions relating to each facility under this Agreement.

         (b)  Default Rate.  All Obligations shall bear interest, from and
after the occurrence of an Event of Default, at a rate equal to the lesser of
(i) three (3) percentage points above the interest rate applicable
immediately prior to the occurrence of the Event of Default or (ii) the
maximum rate permitted by law including, to the extent applicable to Optional
Currency Advances, the law of the country of such Optional Currency.

         (c)  Payments.  Accrued interest shall be due and payable in arrears
upon the earlier of (i) the end of the Interest Period or (ii) any payment of
principal or (iii) on the fourteenth day of each calendar month.  With
respect to repayments of Prime Rate Advances and LIBOR Rate Advances,
Servicing Agent shall, at the option of each Bank, charge such interest, all
Bank Expenses, and all Periodic Payments against a Borrower's deposit account
held at SVB or against the Committed Line, in which case those amounts shall
thereafter accrue interest at the rate then applicable hereunder.  With
respect to repayments of Optional Currency Advances, the branch of BofH in
the country of the Optional Currency shall, at the option of each Bank,
charge such interest and all periodic payments against a Borrower's deposit
account in such country or against the Committed Line, in which case those
amounts shall thereafter accrue interest at the rate then applicable
hereunder.  Any interest not paid when due shall be compounded by becoming a
part of the Obligations, and such interest shall thereafter accrue interest
at the rate then applicable hereunder.

         (d)  Computation.  In the event the Prime Rate is changed from time
to time hereafter, the applicable rate of interest hereunder shall be
increased or decreased effective as of 12:01 a.m. on the day the Prime Rate
is changed, by an amount equal to such change in the Prime Rate.  All
interest chargeable under the Loan Documents shall be computed on the basis
of a three hundred sixty (360) day year for the actual number of days
elapsed, except that interest chargeable on account of Optional Rate Currency
Advances shall be computed on the basis of a three hundred sixty five (365)
day year where such computation is required by any law or is customary in the
country of the Optional Currency.

                             11
<PAGE>


       2.6      Crediting Payments.  Prior to the occurrence of an Event of
Default, each Bank shall credit a wire transfer of funds, check, or other
item of payment to such deposit account held at such Bank or Obligation as
Borrower specifies; provided that payments in an Optional Currency shall be
made only at the branch of BofH in the country of such Optional Currency.
After the occurrence and during the continuation of an Event of Default, the
receipt by a Bank of any wire transfer of funds, check, or other item of
payment shall be immediately applied to conditionally reduce Obligations, but
shall not be considered a payment on account unless such payment is of
immediately available federal funds or unless and until such check or other
item of payment is honored when presented for payment. Notwithstanding
anything to the contrary contained herein, any wire transfer or payment
received by a Bank after noon California time (or, as to a payment in an
Optional Currency, noon at the BofH branch office in the country of the
Optional Currency) shall be deemed to have been received by such Bank as of
the opening of business on the immediately following Business Day.  Whenever
any payment to a Bank under the Loan Documents would otherwise be due (except
by reason of acceleration) on a date that is not a Business Day, such payment
shall instead be due on the next Business Day, and additional fees or
interest, as the case may be, shall accrue and be payable for the period of
such extension.

       2.7      Bank Expenses.  Borrower shall pay to Banks upon the date
hereof, all Bank Expenses incurred through the date hereof, including
reasonable attorneys' fees and expenses, and, within thirty (30) days of
demand, other Bank Expenses as they become due from time to time hereunder.

       2.8      Additional Costs.  In case any law, regulation, treaty or
official directive or the written interpretation or application thereof by
any court or any governmental authority charged with the administration
thereof or the compliance with any guideline or request of any central bank
or other governmental authority (whether or not having the force of law):

         (a)  subjects any Bank to any tax with respect to payments of
principal or interest or any other amounts payable hereunder by Borrower or
otherwise with respect to the transactions contemplated hereby (except for
taxes on the overall net income of such Bank imposed by the United States of
America or any political subdivision thereof);

         (b)  imposes, modifies or deems applicable any deposit insurance,
reserve, special deposit or similar requirement against assets held by, or
deposits in or for the account of, or loans by, any Bank; or

         (c)  imposes upon any Bank any other material condition with respect
to its performance under this Agreement,

and the result of any of the foregoing is to increase the cost to such Bank,
reduce the income receivable by such Bank or impose any expense upon such
Bank with respect to any loans, such Bank shall notify Borrower thereof in
writing.  Borrower shall pay to such Bank the amount of such increase in
cost, reduction in income or additional expense as and when such cost,
reduction or expense is incurred or determined, upon presentation by such
Bank of a statement of the amount and setting forth such Bank's calculation
thereof, all in reasonable detail, which statement shall be deemed true and
correct absent manifest error; provided, however, that Borrower shall not be
liable for any such amount attributable to any period prior to 180 days prior
to the date of such certificate.

       2.9      Conversion/Continuation of Advances.

         (a)  Borrower may from time to time submit in writing a request that
Prime Rate Advances be converted to LIBOR Rate Advances or that any existing
LIBOR Rate Advances continue for an additional Interest Period.  Such request
shall specify the amount of the Prime Rate Advances which will constitute
LIBOR Rate Advances (subject to the limits set forth below) and the Interest
Period to be applicable to such LIBOR Rate Advances. Each written request for
a conversion to a LIBOR Rate Advance or a continuation of a LIBOR Rate
Advance shall be

                             12
<PAGE>


substantially in the form of an Optional Currency Rate or LIBOR Rate
Conversion/Continuation Certificate as set forth on Exhibit B, which shall be
duly executed by a Responsible Officer.  Subject to the terms and conditions
contained herein, three (3) Business Days after Servicing Agent's receipt of
such a request from Borrower, such Prime Rate Advances shall be converted to
LIBOR Rate Advances or such LIBOR Rate Advances or an Optional Currency Rate
Advance shall continue, as the case may be provided that:

           (i)   no Event of Default or event which with notice or passage of
time or both would constitute an Event of Default exists;

           (ii)  no party hereto shall have sent any notice of termination of
the Agreement;

           (iii) Borrower shall have complied with such customary procedures
as Banks have established from time to time for Borrower's requests for
Optional Currency Rate Advances or LIBOR Rate Advances;

           (iv)  the amount of a Prime Rate Advance shall be $25,000 or more,
the amount of an Optional Currency Rate Advance shall be $50,000 or more, and
the amount of a LIBOR Rate Advance shall be $500,000 or such greater amount
which is an integral multiple of $50,000; and

           (v)   Servicing Agent shall have determined that the Interest
Period or LIBOR Rate or Optional Currency Rate is available to Banks as of
the date of the request for such LIBOR Rate Advance or Optional Currency Rate
Advance.

     Any request by Borrower to convert Prime Rate Advances to LIBOR Rate
Advances or continue any existing LIBOR Rate Advances shall be irrevocable.
Notwithstanding anything to the contrary contained herein, Banks shall not be
required to purchase United States Dollar deposits in the London interbank
market or other applicable LIBOR Rate market to fund any LIBOR Rate Advances,
but the provisions hereof shall be deemed to apply as if Banks had purchased
such deposits to fund the LIBOR Rate Advances.

         (b)  Any LIBOR Rate Advances shall automatically convert to Prime
Rate Advances upon the last day of the applicable Interest Period, unless
Banks have received and approved a complete and proper request to continue
such LIBOR Rate Advance at least three (3) Business Days prior to such last
day in accordance with the terms hereof.  Any LIBOR Rate Advances or Optional
Currency Rate Advances shall, at Banks' option, convert to Prime Rate
Advances in the event that an Event of Default shall exist.  Borrower shall
pay to Banks, upon demand by Banks (or Servicing Agent may, at its option,
charge Borrower's deposit account) any amounts required to compensate Banks
for any loss (including loss of anticipated profits), cost or expense
incurred by such person, as a result of the conversion of LIBOR Rate Advances
or Optional Currency Rate Advances to Prime Rate Advances pursuant to any of
the foregoing.

       2.10     Additional Requirements/Provisions Regarding LIBOR Rate
Advances or Optional Currency Rate Advances.

         (a)  If for any reason (including voluntary or mandatory prepayment
or acceleration), Banks receive all or part of the principal amount of a
LIBOR Rate Advance prior to the last day of the Interest Period for such
LIBOR Rate Advance or the proposed term of any Optional Currency Rate Advance
for which the term and the interest rate have been fixed, Borrower shall on
demand by Servicing Agent, pay Servicing Agent the amount (if any) by which
(i) the additional interest which would have been payable on the amount so
received had it not been received until the last day of such Interest Period
or term exceeds (ii) the interest which would have been recoverable by Banks
by placing the amount so received on deposit in the certificate of deposit
markets or the offshore currency interbank markets or United States Treasury
investment products, as the case may

                             13
<PAGE>


be, for a period starting on the date on which it was so received and ending
on the last day of such Interest Period or term at the interest rate
determined by Servicing Agent in its reasonable discretion.  Servicing
Agent's determination as to such amount shall be conclusive absent manifest
error.

         (b)  Borrower shall pay to a Bank, upon demand by a Bank, from time
to time such amounts as such Bank may reasonably determine to be necessary to
compensate it for any costs incurred by such Bank that such Bank determines
are attributable to its making or maintaining of any amount receivable by
such Bank hereunder in respect of any Advances relating thereto (such
increases in costs and reductions in amounts receivable being herein called
"Additional Costs"), in each case resulting from any Regulatory Change which:

           (i)   changes the basis of taxation of any amounts payable to such
Bank under this Agreement in respect of any Advances (other than changes
which affect taxes measured by or imposed on the overall net income of such
Bank by the jurisdiction in which such Bank has its principal office); or

           (ii)  imposes or modifies any reserve, special deposit or similar
requirements relating to any extensions of credit or other assets of, or any
deposits with or other liabilities of such Bank (including any Advances or
any deposits referred to in the definition of "LIBOR Base Rate"); or

           (iii) imposes any other material condition affecting this
Agreement (or any of such extensions of credit or liabilities).

Such Bank will notify Borrower of any event occurring after the date of the
Agreement which will entitle such Bank to compensation pursuant to this
section as promptly as practicable after it obtains knowledge thereof and
determines to request such compensation.  Such Bank will furnish Borrower
with a statement setting forth the basis and amount of each request by such
Bank for compensation under this Section 2.10.  Determinations and
allocations by a Bank for purposes of this Section 2.10 of the effect of any
Regulatory Change on its costs of maintaining its obligations to make
Advances or of making or maintaining Advances or on amounts receivable by it
in respect of Advances, and of the additional amounts required to compensate
such Bank in respect of any Additional Costs, shall be conclusive absent
manifest error.

         (c)  Borrower shall pay to a Bank, upon the request of such Bank,
such amount or amounts as shall be sufficient (in the sole good faith opinion
of such Bank) to compensate it for any reasonable loss, costs or expense
incurred by it as a result of any failure by Borrower to borrow a LIBOR Rate
Advance on the date for such borrowing specified in the relevant notice of
borrowing hereunder.

         (d)  If a Bank shall determine that the adoption or implementation
of any applicable law, rule, regulation or treaty regarding capital adequacy,
or any change therein, or any change in the interpretation or administration
thereof by any governmental authority, central bank or comparable agency
charged with the interpretation or administration thereof, or compliance by
Bank (or its applicable lending office) with any respect or directive
regarding capital adequacy (whether or not having the force of law) of any
such authority, central bank or comparable agency, has or would have the
effect of reducing the rate of return on capital of such Bank or any person
or entity controlling Bank (a "Parent") as a consequence of its obligations
hereunder to a level below that which Bank (or its Parent) could have
achieved but for such adoption, change or compliance (taking into
consideration its policies with respect to capital adequacy) by an amount
deemed by Bank to be material, then from time to time, within 15 days after
demand by such Bank, Borrower shall pay to Bank such additional amount or
amounts as will compensate such Bank for such reduction.  A statement of such
Bank claiming compensation under this Section and setting forth the
additional amount or amounts to be paid to it hereunder shall be conclusive
absent manifest error.

                             14
<PAGE>


         (e)  If at any time a Bank, in its sole and absolute discretion,
determines that:  (i) the amount of the LIBOR Rate Advances or Optional
Currency Rate Advances for periods equal to the corresponding Interest
Periods or any other period are not available to such Bank in the offshore
currency interbank markets, or (ii) the LIBOR Rate or Optional Currency Rate
does not accurately reflect the cost to Bank of lending the LIBOR Rate
Advance or Optional Currency Rate Advance, then such Bank shall promptly give
notice thereof to Borrower, and upon the giving of such notice such Bank's
obligation to make the LIBOR Rate Advances or Optional Currency Rate Advances
shall terminate, unless Banks and Borrower agree in writing to a different
interest rate applicable to LIBOR Rate Advances or Optional Currency Rate
Advances.  If it shall become unlawful for a Bank to continue to fund or
maintain any Advances, or to perform its obligations hereunder, upon demand
by such Bank, Borrower shall prepay the Advances in full with accrued
interest thereon and all other amounts payable by Borrower hereunder
(including, without limitation, any amount payable in connection with such
prepayment pursuant to Section 2.10(a)).

       2.11     Term.  This Agreement shall become effective upon the date
hereof and shall continue in full force and effect for a term ending on the
Maturity Date.  Notwithstanding the foregoing, Banks shall have the right to
terminate any obligation to make Advances under this Agreement immediately
and without notice upon the earlier of (i) the occurrence and during the
continuance of an Event of Default or (ii) the Revolving Maturity Date.  On
the date of termination, all Obligations shall become immediately due and
payable in cash or by wire transfer.

          Upon satisfaction of all Obligations hereunder (including
prepayment fees, if applicable) this Agreement shall, at Borrower's request,
terminate, and Banks shall execute such terminations of financing statements
as Borrower may reasonably request.

     3.      CONDITIONS OF LOANS

       3.1     Conditions Precedent to Initial Advance.  The obligation of
either Bank to make the initial Advance is subject to the condition precedent
that such Bank shall have received, in form and substance satisfactory to
such Bank, the following:

         (a)  this Agreement;

         (b)  a certificate of the Secretary of Borrower with respect to
incumbency and resolutions authorizing the execution and delivery of this
Agreement;

         (c)  the Optional Currency Rate Instruments (with respect to
Optional Currency Rate Advances only);

         (d)  an opinion of Borrower's counsel;

         (e)  payment of the Bank Expenses then due specified in Section 2.5
hereof, provided reasonably detailed invoices are received; and

         (f)  such other documents, and completion of such other matters, as
Banks may reasonably deem necessary or appropriate.

       3.2     Conditions Precedent to all Advances.  The obligation of any
Bank to make each Advance, including the initial Advance, is further subject
to the following conditions:

         (a)  timely receipt by Servicing Agent of the Loan Payment/Advance
Form as provided in Section 2.1;

         (b)  the representations and warranties contained in Section 5 shall
be true and correct in all material respects on and as of the date of such
Loan Payment/Advance Form and on the effective date of each Advance as though
made at and as of each such date (except to the extent

                             15
<PAGE>


they relate specifically to an earlier date, in which case such
representations and warranties shall continue to have been true and accurate
as of such date), and no Event of Default shall have occurred and be
continuing, or would result from such Advance; and

               (c)       as to each Optional Currency Rate Advance, all of
the terms and conditions contained in the applicable Optional Currency Rate
Instruments have been satisfied.

     The making of each Advance shall be deemed to be a representation and
warranty by each Borrower on the date of such Advance as to the accuracy of
the facts referred to in this Section 3.2(b).

     4.        REPRESENTATIONS AND WARRANTIES

          Each Borrower represents and warrants as follows:

       4.1     Due Organization and Qualification.  Borrower is a corporation
duly existing and in good standing under the laws of its state of
incorporation and qualified and licensed to do business in, and is in good
standing in, any state in which the conduct of its business or its ownership
of property requires that it be so qualified except for states as to which
any failure so to qualify would not have a Material Adverse Effect.

       4.2     Due Authorization; No Conflict.  The execution, delivery, and
performance of the Loan Documents are within Borrower's powers, have been
duly authorized, and are not in conflict with nor constitute a breach of any
provision contained in Borrower's Articles or Certificate of Incorporation or
Bylaws, nor will they constitute an event of default under any material
agreement to which such Borrower is a party or by which Borrower is bound.
Borrower is not in default under any agreement to which it is a party or by
which it is bound, which default is reasonably likely to have a Material
Adverse Effect.

       4.3     No Prior Encumbrances.  Borrower has good and indefeasible
title to its assets, free and clear of Liens, except for Permitted Liens.

       4.4    Merchantable Inventory.  All Inventory is in all material
respects of good and marketable quality, free from all material defects.

       4.5    Litigation.  There are no actions or proceedings pending by or
against any Borrower before any court or administrative agency in which an
adverse decision is reasonably likely to have a Material Adverse Effect.
Borrower has no knowledge of any such pending or threatened actions or
proceedings.

       4.6    No Material Adverse Change in Financial Statements. All
consolidated financial statements related to Borrower that have been
delivered to Banks fairly present in all material respects the consolidated
financial condition as of the date thereof of each such entity and
consolidated results of operations for the period then ended of each such
entity.  There has not been a material adverse change in the consolidated
financial condition of Borrower since the date of the most recent of such
financial statements submitted to Banks.

       4.7    Solvency.  Borrower is solvent and able to pay its debts
(including trade debts) as they mature.

       4.8    Regulatory Compliance.  Borrower has met the minimum funding
requirements of ERISA with respect to any employee benefit plans subject to
ERISA.  No Borrower has withdrawn from, and no termination or partial
termination has occurred with respect to, any deferred compensation plan, and
no Borrower has withdrawn from any multi-employer plan under ERISA.  No event
has occurred resulting from Borrower's failure to comply with ERISA that is
reasonably likely to result in Borrower's incurring any liability that is
reasonably likely to have a Material Adverse Effect.  No Borrower is an
"investment company" or a company "controlled" by an "investment company"

                             16

<PAGE>


within the meaning of the Investment Company Act of 1940.  No Borrower is
engaged principally, or as one of the important activities, in the business
of extending credit for the purpose of purchasing or carrying margin stock
(within the meaning of Regulations G, T and U of the Board of Governors of
the Federal Reserve System), and no part of the proceeds of the Advances will
be used to purchase or carry any margin stock or for any purpose that would
violate any of Regulations G, T and U.  Borrower has complied with all the
provisions of the Federal Fair Labor Standards Act.  Borrower has complied
with all laws and regulations to which it is subject, noncompliance with
which is reasonably likely to have a Material Adverse Effect.

       4.9    Environmental Condition.  None of Borrower's properties or
assets has ever been used by Borrower or any Subsidiary or, to Borrower's
knowledge, without any independent investigation, by previous owners or
operators, in the disposal of, or to produce, store, handle, treat, release,
or transport, any hazardous waste or hazardous substance other than in
accordance with applicable law; to the best of Borrower's knowledge, none of
Borrower's properties or assets has ever been designated or identified in any
manner pursuant to any environmental protection statute as a hazardous waste
or hazardous substance disposal site, or a candidate for closure pursuant to
any environmental protection statute; no lien arising under any environmental
protection statute has attached to any revenues or to any real or personal
property owned by a Borrower or any Subsidiary; and neither Borrower nor any
Subsidiary has received a summons, citation, notice, or directive from the
Environmental Protection Agency or any other federal or state governmental
agency concerning any action or omission by Borrower or any Subsidiary
resulting in the releasing, or otherwise disposing of hazardous waste or
hazardous substances into the environment.

       4.10    Taxes.  Borrower and each Subsidiary have filed or caused to
be filed all material tax returns required to be filed, and has paid, or have
made adequate provision for the payment of, all taxes reflected therein.

       4.11    Subsidiaries.  No Borrower owns any stock, partnership
interest or other equity securities of any Person, except for Permitted
Investments.

       4.12    Government Consents.  Borrower has obtained all consents,
approvals and authorizations of, made all declarations or filings with, and
given all notices to, all governmental authorities that are necessary for the
continued operation of their respective businesses as currently conducted.

       4.13    Full Disclosure.  The representations, warranties and other
statements included in the documents, certificates and written statements
furnished by Borrower to either Bank prior to or as of the date of this
Agreement for use in connection with the transactions contemplated by this
Agreement, taken as a whole, do not contain any untrue statement of a
material fact or omit to state a material fact (known to Borrower, in the
case of any document not furnished by it) necessary in order to make the
statements contained herein or therein not misleading (it being recognized by
Banks that the projections and forecasts provided by Borrower are not to be
viewed as facts and that actual results during the period or periods covered
by any such projections and forecasts may differ from the projected or
forecasted results).

     5.        AFFIRMATIVE COVENANTS

          Borrower covenants and agrees that, from and after the Closing Date
until payment in full of all outstanding Obligations, and for so long as any
Bank may have any commitment to make an Advance hereunder, Borrower shall do
all of the following:

       5.1    Good Standing.  Maintain its and cause to be maintained each of
its Subsidiaries' corporate existence and good standing in its jurisdiction
of incorporation and maintain qualification in each jurisdiction in which the
failure to so qualify is reasonably likely to have a Material Adverse Effect.
Borrower shall maintain, and shall cause each of its Subsidiaries to maintain

                             17
<PAGE>


in force all licenses, approvals and agreements, the loss of which would have
a Material Adverse Effect.

       5.2    Government Compliance.  Meet, and shall cause each Subsidiary
to meet, the minimum funding requirements of ERISA with respect to any
employee benefit plans subject to ERISA. Borrower shall comply, and shall
cause each Subsidiary to comply, with all statutes, laws, ordinances and
government rules and regulations to which it is subject, noncompliance with
which could have a Material Adverse Effect.

       5.3    Financial Statements, Reports, Certificates.  Borrower shall
deliver to Banks:  (a) upon the sooner of 45 days after the last day of each
fiscal quarter as to Form 10-Q, and the sooner of 90 days after the last day
of each fiscal year as to Form 10-K, or within five (5) days upon becoming
available, copies of all statements, reports and notices sent or made
available generally by Borrower to its security holders or to any holders of
Subordinated Debt and all reports on Form 10-K and 10-Q filed with the
Securities and Exchange Commission; (b) promptly upon receipt of notice
thereof, a report of any legal actions pending or threatened against Borrower
or any Subsidiary that is reasonably likely to result in damages or costs to
Borrower or any Subsidiary of Five Hundred Thousand Dollars ($500,000) or
which could have a Material Adverse Effect; and (c) such budgets, sales
projections, operating plans or other financial information as Bank may
reasonably request from time to time.

     Borrower shall deliver to Banks with the quarterly financial statements
a Compliance Certificate signed by a Responsible Officer in substantially the
form of Exhibit B hereto.

     Any Bank shall have a right from time to time hereafter to audit
Borrower's Accounts, provided that such audits will be conducted at
Borrower's expense no more often than annually, unless an Event of Default
has occurred and is continuing, with the auditing Bank to conduct all other
audits at its own expense.

       5.4    Inventory; Returns.  Keep all Inventory in good and marketable
condition, free from all material defects.  Returns and allowances, if any,
as between Borrower and its account debtors shall be on the same basis and in
accordance with the usual customary practices of Borrower, as they exist at
the time of the execution and delivery of this Agreement.  Borrower shall
promptly notify Bank when any particular return, recovery, dispute or claim
causes the aggregate returns for any fiscal month to exceed Ten Percent (10%)
of the gross sales for such month.

       5.5    Taxes.  Make, and shall cause each Subsidiary to make, due and
timely payment or deposit of all material federal, state, and local taxes,
assessments, or contributions required of it by law, and will execute and
deliver to Banks, on demand, appropriate certificates attesting to the
payment or deposit thereof; and Borrower will make, and will cause each
Subsidiary to make, timely payment or deposit of all material tax payments
and withholding taxes required of it by applicable laws, including, but not
limited to, those laws concerning F.I.C.A., F.U.T.A., state disability, and
local, state, and federal income taxes, and will, upon request, furnish each
Bank with proof satisfactory to such Bank indicating that Borrower or a
Subsidiary has made such payments or deposits; provided that Borrower or a
Subsidiary need not make any payment if the amount or validity of such
payment is contested in good faith by appropriate proceedings and is reserved
against (to the extent required by GAAP) by Borrower.

       5.6    Insurance.

         (a)  Borrower, at its expense, shall keep its assets insured against
loss or damage by fire, theft, explosion, sprinklers, and all other hazards
and risks, and in such amounts, as ordinarily insured against by other owners
in similar businesses conducted in the locations where their respective
businesses are conducted on the date hereof.  Borrower shall also maintain
insurance relating to Borrower's ownership and use of its assets in amounts
and of a type that are customary to businesses similar to Borrower's.

                             18
<PAGE>


         (b)  All such policies of insurance shall be in such form, with such
companies, and in such amounts as are reasonably satisfactory to Banks.  At a
Bank's request, Borrower shall deliver to Banks certified copies of such
policies of insurance and evidence of the payments of all premiums therefor.
All proceeds payable under any such policy shall, at the option of Banks, be
payable to Banks to be applied on account of the Obligations.

       5.7    Quick Ratio.  Maintain, on a consolidated basis, as of the last
day of each fiscal quarter, a ratio of Quick Assets to Current Liabilities of
at least 1.75 to 1.00.

       5.8    Debt-Tangible Net Worth Ratio.  Maintain, on a consolidated
basis, as of the last day of each fiscal quarter, a ratio of Total
Liabilities to Tangible Net Worth of not more than 0.65 to 1.00.

       5.9    Tangible Net Worth.  Maintain, on a consolidated basis, as of
the last day of each fiscal quarter, a Tangible Net Worth of not less than
Sixty Million Dollars ($60,000,000) plus Seventy Five Percent (75%) of
Borrower's quarterly profits beginning December 31, 1998.

       5.10   Profitability.  On a consolidated basis, have a minimum net
profit of One Dollar ($1.00) for each fiscal quarter, provided Borrower may
suffer a loss in any one fiscal quarter per fiscal year of not more than Five
Hundred Thousand Dollars ($500,000).  Non-cash charges incurred in the
acquisition of Tower Electronics, Inc. shall not be included in the
calculation of profitability for the fiscal quarter ending September 30, 1997.

       5.11   Debt Service Coverage.  Borrower shall maintain, as of the last
day of each fiscal quarter, a Debt Service Coverage of at least 2.0 to 1.0 on
a rolling two quarter basis, annualized, excluding capital expenditures.
"Debt Service Coverage" means (a) the sum of (i) earnings after tax plus (ii)
depreciation and amortization expense less (iii) capital expenditures,
divided by (b) the current portion of total long term debt, excluding
Advances under the Committed Line.

       5.12   Further Assurances.  At any time and from time to time Borrower
shall execute and deliver such further instruments and take such further
action as may reasonably be requested by any Bank to effect the purposes of
this Agreement.

     6.        NEGATIVE COVENANTS

          Borrower covenants and agrees that, from and after the Closing
Date, so long as any credit hereunder shall be available and until payment in
full of the outstanding Obligations or for so long as any Bank may have any
commitment to make any Advances, Borrower will not do any of the following:

       6.1    Dispositions.  Without the Banks' consent, which shall not be
unreasonably withheld, convey, sell, lease, transfer or otherwise dispose of
(collectively, a "Transfer"), or permit any of its Subsidiaries to Transfer,
all or any part of its business or property, other than:  (i) Transfers in
the ordinary course of business; (ii) Transfers of non-exclusive licenses and
similar arrangements for the use of the property of Borrower or its
Subsidiaries; (iii) Transfers of worn-out or obsolete Equipment; or (iv)
Transfers which constitute liquidation of Investments permitted under Section
7.7.

       6.2    Change in Business or Control.  Engage in any business, or
permit any of its Subsidiaries to engage in any business, other than the
businesses currently engaged in by Borrower and any business substantially
similar or related thereto (or incidental thereto).

       6.3    Mergers or Acquisitions.  Except in the ordinary course of
Borrower's business, merge or consolidate, or permit any of its Subsidiaries
to merge or consolidate, with or into any other business organization, or
acquire, or permit any of its Subsidiaries to acquire, all or substantially
all of the capital stock or property of another Person; provided that this
Section 7.3 shall not apply to

                             19
<PAGE>


Permitted Investments or to transactions among a Borrower and its
Subsidiaries in which such Borrower is the surviving entity or among its
Subsidiaries.

       6.4    Indebtedness.  Create, incur, assume or be or remain liable
with respect to any Indebtedness, or permit any Subsidiary so to do, other
than Permitted Indebtedness.

       6.5    Encumbrances.  Create, incur, assume or suffer to exist any
Lien with respect to any of its property, or assign or otherwise convey any
right to receive income, including the sale of any Accounts, or permit any of
its Subsidiaries so to do, except for Permitted Liens.

       6.6    Distributions.  Pay any dividends or make any other
distribution or payment on account of or in redemption, retirement or
purchase of any capital stock, except for so long as an Event of Default has
not occurred and is not continuing (and would not exist immediately after
such payment), Borrower may repurchase its stock from former employees of
Borrower in accordance with the terms of repurchase or similar agreements
between Borrower and such employees.

       6.7    Investments.  Directly or indirectly acquire or own, or make
any Investment in or to any Person, or permit any of its Subsidiaries so to
do, other than Permitted Investments and except as made in the ordinary
course of Borrower's business.

       6.8    Transactions with Affiliates.  Directly or indirectly enter
into or permit to exist any material transaction with any Affiliate of
Borrower except for transactions that are in the ordinary course of
Borrower's business, upon fair and reasonable terms that are no less
favorable to Borrower than would be obtained in an arm's length transaction
with a nonaffiliated Person, and except for transactions with a Subsidiary
that are upon fair and reasonable terms and transactions constituting
Permitted Investments.

       6.9    Subordinated Debt.  Make any payment in respect of any
Subordinated Debt, or permit any of its Subsidiaries to make any such
payment, except in compliance with the terms of such Subordinated Debt, or
amend any provision contained in any documentation relating to the
Subordinated Debt without Banks' prior written consent.

       6.10   Compliance.  Become an "investment company" controlled by an
"investment company," within the meaning of the Investment Company Act of
1940, or become principally engaged in, or undertake as one of its important
activities, the business of extending credit for the purpose of purchasing or
carrying margin stock, or use the proceeds of any Advance for such purpose.
Fail to meet the minimum funding requirements of ERISA, permit a Reportable
Event or Prohibited Transaction, as defined in ERISA, to occur, permit any
condition to exist that would entitle any Person to obtain a decree
adjudicating that any Plan under ERISA must be terminated, fail to comply
with the Federal Fair Labor Standards Act or violate any law or regulation,
which violation could have a Material Adverse Effect or a material adverse
effect on the Collateral or the priority of Banks' Lien on the Collateral, or
permit any of its Subsidiaries to do any of the foregoing.

     7.        EVENTS OF DEFAULT

          Any one or more of the following events shall constitute an Event
of Default by Borrower under this Agreement:

       7.1    Payment Default.  If Borrower fails to pay the principal of, or
any interest on, any Credit Extensions when due and payable; or fails to pay
any portion of any other Obligations not constituting such principal or
interest, including without limitation Bank Expenses, within thirty (30) days
of receipt by Borrower of a reasonably detailed invoice on account of such
other Obligations;

       7.2    Covenant Default.  If Borrower fails to perform any obligation
under Article 5 or violates any of the covenants contained in Article 6 of
this Agreement, or fails or neglects to perform, keep, or observe any other
material term, provision, condition, covenant, or agreement

                             20
<PAGE>


contained in this Agreement, in any of the Loan Documents, or in any other
present or future agreement between Borrower and any Bank and as to any
default under such other term, provision, condition, covenant or agreement
that can be cured, has failed to cure such default within twenty (20) days
after Borrower receives notice thereof or any Responsible Officer becomes
aware thereof; provided, however, that if the default cannot by its nature be
cured within the twenty (20) day period or cannot after diligent attempts by
Borrower be cured within such twenty (20) day period, and such default is
likely to be cured within a reasonable time, then Borrower shall have an
additional reasonable period (which shall not in any case exceed thirty (30)
days) to attempt to cure such default, and within such reasonable time period
the failure to have cured such default shall not be deemed an Event of
Default (provided that no Advances will be required to be made during such
cure period);

       7.3    Material Adverse Change.  If there occurs a material adverse
change in the business or financial condition of Borrower, taken as a whole,
or if there is a material impairment of the prospect of repayment of any
portion of the Obligations;

       7.4    Attachment.  If any material portion of Borrower's assets is
attached, seized, subjected to a writ or distress warrant, or is levied upon,
or comes into the possession of any trustee, receiver or person acting in a
similar capacity and such attachment, seizure, writ or distress warrant or
levy has not been removed, discharged or rescinded within thirty (30) days,
or if a Borrower is enjoined, restrained, or in any way prevented by court
order from continuing to conduct all or any material part of its business
affairs, or if a judgment or other claim becomes a lien or encumbrance upon
any material portion of Borrower's assets, or if a notice of lien, levy, or
assessment is filed of record with respect to any of Borrower's assets by the
United States Government, or any department, agency, or instrumentality
thereof, or by any state, county, municipal, or governmental agency, and the
same is not paid within thirty (30) days after Borrower receives notice
thereof, provided that none of the foregoing shall constitute an Event of
Default where such action or event is stayed or an adequate bond has been
posted pending a good faith contest by Borrower (provided that no Advances
will be required to be made during such cure period);

       7.5    Insolvency.  If Borrower becomes insolvent, or if an Insolvency
Proceeding is commenced by Borrower, or if an Insolvency Proceeding is
commenced against Borrower and is not dismissed or stayed within thirty (30)
days (provided that no Advances will be made prior to the dismissal of such
Insolvency Proceeding);

       7.6    Other Agreements.  If there is a default in any agreement to
which Borrower is a party with a third party or parties resulting in a right
by such third party or parties, whether or not exercised, to accelerate the
maturity of any Indebtedness in an amount in excess of Five Hundred Thousand
Dollars ($500,000) or which would have a Material Adverse Effect;

       7.7    Judgments.  If a judgment or judgments for the payment of money
in an amount, individually or in the aggregate, of at least Five Hundred
Thousand Dollars ($500,000) shall be rendered against Borrower and shall
remain unsatisfied and unstayed for a period of thirty (30) days (provided
that no Advances will be made prior to the satisfaction or stay of such
judgment); or

       7.8    Misrepresentations.  If any material misrepresentation or
material misstatement exists now or hereafter in any warranty or
representation set forth herein or in any certificate delivered to any Bank
by any Responsible Officer pursuant to this Agreement or to induce Bank to
enter into this Agreement or any other Loan Document.

     8.        BANKS' RIGHTS AND REMEDIES

       8.1    Rights and Remedies.  Upon the occurrence and during the
continuance of an Event of Default, any Bank may, at its election, do any one
or more of the following, all of which are authorized by Borrower:

                             21
<PAGE>


         (a)  Declare all Obligations owing to such Bank, whether evidenced
by this Agreement, by any of the other Loan Documents, or otherwise,
immediately due and payable (provided that upon the occurrence of an Event of
Default described in Section 8.5 all Obligations shall become immediately due
and payable without any action by any Bank);

         (b)  Cease advancing money or extending credit to or for the benefit
of  Borrower under this Agreement or under any other agreement between
Borrower and any Bank; and

         (c)  Set off and apply to the Obligations any and all (i) balances,
deposits and investments of Borrower held by such Bank, or (ii) indebtedness
at any time owing to or for the credit or the account of Borrower held by
such Bank;

         (d)  Liquidate any Exchange Contracts not yet settled and demand
that Borrower immediately deposit cash with Banks in an amount sufficient to
cover any losses incurred by Bank due to liquidation of the Exchange
Contracts at the then prevailing market price; and

         (e)  Without notice to Borrower set off and apply to the Obligations
any and all (i) balances and deposits of Borrower held by a Bank, or (ii)
indebtedness at any time owing to or for the credit or the account of
Borrower held by a Bank.

       8.2     Bank Expenses.  After the occurrence of an Event of Default,
if a Borrower fails to pay any amounts or furnish any required proof of
payment due to third persons or entities, as required under the terms of this
Agreement, then Banks may do any or all of the following: (a) make payment
of the same or any part thereof; (b) set up such reserves under the Committed
Line as Banks deem necessary to protect Banks from the exposure created by
such failure; or (c) obtain and maintain insurance policies of the type
discussed in Section 5.6 of this Agreement, and take any action with respect
to such policies as Banks reasonably deem prudent.  Any amounts so paid or
deposited by Banks shall constitute Bank Expenses, shall be immediately due
and payable, and shall bear interest at the then applicable rate hereinabove
provided.  Any payments made by any Bank shall not constitute an agreement by
such Bank to make similar payments in the future or a waiver by Bank of any
Event of Default under this Agreement.

       8.3    Remedies Cumulative.  Banks' rights and remedies under this
Agreement, the Loan Documents, and all other agreements shall be cumulative.
Banks shall have all other rights and remedies not inconsistent herewith as
provided under the Code, by law, or in equity.  No exercise by any Bank of
one right or remedy shall be deemed an election.  No waiver by any Bank of
any Event of Default on a Borrower's part shall be effective unless also
waived in writing by any other Bank.  No waiver shall be deemed a continuing
waiver.  No delay by any Bank shall constitute a waiver, election, or
acquiescence by it.

       8.4    Demand; Protest.  Each Borrower waives protest, notice of
protest, notice of dishonor, notice of payment and nonpayment, notice of any
nonpayment at maturity, release, compromise, settlement, extension, or
renewal of accounts, documents, instruments, chattel paper, and guarantees at
any time held by any Bank on which Borrower may in any way be liable.

     9.        NOTICES

          Unless otherwise provided in this Agreement, all notices or demands
by any party relating to this Agreement or any other agreement entered into
in connection herewith shall be in writing and (except for financial
statements and other informational documents which may be sent by first-class
mail, postage prepaid) shall be personally delivered or sent by certified
mail, postage prepaid, return receipt requested, or by prepaid telefacsimile
to Borrower or to each Bank, as the case may be, at its addresses set forth
below:

                             22
<PAGE>


     If to :        Advanced Energy Industries, Inc.
                    1625 Sharp Point Drive
                    Ft. Collins, CO  80525
                    Attn: Richard Beck
                    FAX:  (970) 221-5583

     If to Banks:   Silicon Valley Bank
                    4430 Arapahoe Avenue, Suite 225
                    Boulder, CO 80303
                    Attn:  Greg Becker
                    FAX:  (303) 938-0483

                    Bank of Hawaii
                    1850 N. Central Avenue, Suite 400
                    Phoenix, AZ 85004
                    Attn:  Ken Loveless
                    FAX:  (602) 257-2235

     The parties hereto may change the address at which they are to receive
notices hereunder, by notice in writing in the foregoing manner given to the
other.  NOTICES TO ONE BANK SHALL NOT BE DEEMED NOTICE TO THE OTHER BANK.

     10.       CHOICE OF LAW AND VENUE; JURY TRIAL WAIVER

          This Agreement shall be governed by, and construed in accordance
with, the internal laws of the State of California, without regard to
principles of conflicts of law.  Borrower and Banks hereby submit to the
exclusive jurisdiction of the state and Federal courts located in the County
of Santa Clara, State of California.  BORROWER AND BANKS HEREBY WAIVE THEIR
RESPECTIVE RIGHTS TO A JURY TRIAL OF ANY CLAIM OR CAUSE OF ACTION BASED UPON
OR ARISING OUT OF ANY OF THE LOAN DOCUMENTS OR ANY OF THE TRANSACTIONS
CONTEMPLATED THEREIN, INCLUDING CONTRACT CLAIMS, TORT CLAIMS, BREACH OF DUTY
CLAIMS, AND ALL OTHER COMMON LAW OR STATUTORY CLAIMS.  EACH PARTY RECOGNIZES
AND AGREES THAT THE FOREGOING WAIVER CONSTITUTES A MATERIAL INDUCEMENT FOR IT
TO ENTER INTO THIS AGREEMENT.  EACH PARTY REPRESENTS AND WARRANTS THAT IT HAS
REVIEWED THIS WAIVER WITH ITS LEGAL COUNSEL AND THAT IT KNOWINGLY AND
VOLUNTARILY WAIVES ITS JURY TRIAL RIGHTS FOLLOWING CONSULTATION WITH LEGAL
COUNSEL.

     11.       INTERCREDITOR PROVISIONS

       11.1   Proportionate Interests.  Except for Optional Currency
Advances, which shall be the sole responsibility of BofH, and except as
otherwise provided in this Agreement, the rights, interests, and obligations
of each Bank under this Agreement and the Loan Documents at any time shall be
shared in the ratio of (a) the maximum amount the Bank has committed to
advance as set forth on the signature page signed by the Bank to (b) the
Committed Line.  Any reference in this Agreement or the Loan Documents to an
allocation between or sharing by the Banks of any right, interest, or duty
"ratably," "proportionally," "pro rata," or in similar terms shall refer to
this ratio.  No Bank is obligated to advance any funds in lieu of or for the
account of the other Bank if the latter Bank fails to make such Advance.

       11.2   Designation of Service Agent.  To facilitate the administration
of this Agreement, SVB shall act as "Servicing Agent" for itself and BofH.
Servicing Agent shall have only such duties as are expressly set forth in
this Agreement, or as otherwise agreed in writing by the Banks.  Servicing
Agent shall be deemed to act on behalf of both Banks whenever Servicing Agent
acts under this Agreement.

                             23
<PAGE>


       11.3   Resignation.  Servicing Agent may resign as Servicing Agent,
upon thirty (30) day's written notice to the other Banks and to Borrower and
appointment of a successor Servicing Agent approved by Banks.  Upon receipt
of notice of resignation, the Banks shall appoint a successor Servicing
Agent. The resigning Servicing Agent shall cooperate fully in delivering to
the successor Servicing Agent the Loan Documents and copies of all records
relating to the Advances and payments made hereunder that the successor
Servicing Agent reasonably requests.

       11.4   Servicing Agent as Bank.  Servicing Agent shall have the same
rights and powers under this Agreement as any other Bank and may exercise the
same as though it were not Servicing Agent.  The term "Banks" includes
Servicing Agent in Servicing Agent's individual capacity.  Servicing Agent
and its Subsidiaries and Affiliates may accept deposits from, lend money to,
act as agent or trustee for other lenders to, and generally engage in any
kind of banking, trust, or other business with, any Borrower or any
Subsidiary or Affiliates as if Servicing Agent were not Servicing Agent.

       11.5   No Agency.  EXCEPT AS SPECIFIED HEREIN, NEITHER BANK IS AN
AGENT OF THE OTHER.  NEITHER BANK HAS ANY AUTHORITY TO ACT OR FAIL TO ACT FOR
THE OTHER.  THE OBLIGATIONS OF EACH BANK HEREUNDER ARE SEVERAL.  NO BANK
SHALL BE LIABLE FOR THE FAILURE OF ANY OTHER BANK TO PERFORM ITS OBLIGATIONS
HEREUNDER.

       11.6   No Reliance.  The provisions of this Article 11 are solely for
the benefit of Banks in specifying their rights and obligations with respect
to each other, and not for the benefit of any Borrower or its assigns or
successors.

     12.       GENERAL PROVISIONS

       12.1   Successors and Assigns.  This Agreement shall bind and inure to
the benefit of the respective successors and permitted assigns of each of the
parties; provided, however, that neither this Agreement nor any rights
hereunder may be assigned by any Borrower without each Bank's prior written
consent, which consent may be granted or withheld in each Bank's sole
discretion.  Subject to the terms of any agreement between Banks, each Bank
shall have the right with the consent (which shall not be unreasonably
withheld) of Borrower to sell, transfer, negotiate, or grant participations
in all or any part of, or any interest in, Bank's obligations, rights and
benefits hereunder; provided no Bank will sell, transfer, negotiate or grant
participations in any part of, or any interest in, such obligations, rights
and benefits in a principal amount of less than Five Million Dollars
($5,000,000).

       12.2   Indemnification.  Borrower shall defend, indemnify and hold
harmless each Bank and its officers, employees, and agents against:  (a) all
obligations, demands, claims, and liabilities claimed or asserted by any
other party in connection with the transactions contemplated by this
Agreement (except with regard to a dispute between the Banks); and (b) all
losses or Bank Expenses in any way suffered, incurred, or paid by such Bank
as a result of or in any way arising out of, following, or consequential to
transactions between such Bank and Borrower whether under this Agreement, or
otherwise (including without limitation reasonable attorneys fees and
expenses), except for losses caused by such Bank's gross negligence or
willful misconduct and except with regard to a dispute between the Banks.

       12.3   Time of Essence.  Time is of the essence for the performance of
all obligations set forth in this Agreement.

       12.4   Severability of Provisions.  Each provision of this Agreement
shall be severable from every other provision of this Agreement for the
purpose of determining the legal enforceability of any specific provision.

       12.5   Amendments in Writing, Integration.  This Agreement cannot be
changed or terminated orally.  No amendment shall be effective without the
consent of all the parties hereto,

                             24
<PAGE>


except the provisions of Article 11 may be amended by Banks without
Borrower's approval.  All prior agreements, understandings, representations,
warranties, and negotiations between the parties hereto with respect to the
subject matter of this Agreement, if any, are merged into this Agreement and
the Loan Documents.

       12.6   Counterparts.  This Agreement may be executed in any number of
counterparts and by different parties on separate counterparts, each of
which, when executed and delivered, shall be deemed to be an original, and
all of which, when taken together, shall constitute but one and the same
Agreement.

       12.7   Survival.  All covenants, representations and warranties made
in this Agreement shall continue in full force and effect so long as any
Obligations remain outstanding.  The obligations of Borrower to indemnify
each Bank with respect to the expenses, damages, losses, costs and
liabilities described in Section 12.2 shall survive until all applicable
statute of limitations periods with respect to actions that may be brought
against such Bank have run.

       12.8   Confidentiality.  In handling any confidential information each
Bank shall exercise the same degree of care that it exercises with respect to
its own proprietary information of the same types to maintain the
confidentiality of any non-public information thereby received or received
pursuant to this Agreement except that disclosure of such information may be
made (i) to the subsidiaries or affiliates of such Bank in connection with
their present or prospective business relations with Borrower, (ii) to
prospective transferees or purchasers of any interest in the Loans, provided
that they have entered into a comparable confidentiality agreement in favor
of Borrower and have delivered a copy to Borrower, (iii) as required by law,
regulations, rule or order, subpoena, judicial order or similar order, (iv)
as may be required in connection with the examination, audit or similar
investigation of Bank, and (v) as may be appropriate in the exercise of any
remedies hereunder. Confidential information hereunder shall not include
information that either:  (a) is in the public domain or in the knowledge or
possession of Bank when disclosed to Bank, or becomes part of the public
domain after disclosure to Bank through no fault of Bank; or (b) is disclosed
to the Bank by a third party, provided the Bank does not have actual
knowledge that such third party is prohibited from disclosing such
information.

       12.9   Optional Currency Rate Instruments.  To the extent the terms of
any Optional Currency Rate Instrument differ from the terms of this Agreement
then the terms of such Optional Currency Rate Instrument shall govern the
rights and obligations of the parties thereto.

                             25
<PAGE>


     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed as of the date first above written.

                              ADVANCED ENERGY INDUSTRIES, INC.


                              By:

                              Title:




                              SILICON VALLEY BANK


                              By:

                              Title:

                              Maximum Commitment Amount:
                              $15,000,000          (50%)




                              BANK OF HAWAII


                              By:

                              Title:

                              Maximum Commitment Amount:
                              $15,000,000          (50%)

                             26

<PAGE>


                                EXHIBIT A

                    LOAN PAYMENT/ADVANCE REQUEST FORM

             DEADLINE FOR SAME DAY PROCESSING IS NOON, P.S.T.

TO:  SILICON VALLEY BANK, as Servicing Agent

FAX#:     (408) 432-3249                        TIME: __________


FROM: __________________________________________________________
                           CLIENT NAME (BORROWER)

REQUESTED BY: __________________________________________________
                           AUTHORIZED SIGNER'S NAME

AUTHORIZED SIGNATURE: __________________________________________

PHONE NUMBER: __________________________________________________

FROM ACCOUNT # _________________  TO ACCOUNT # _________________


REQUESTED TRANSACTION TYPE              REQUEST DOLLAR AMOUNT

PRINCIPAL INCREASE (ADVANCE)       $ ___________________________
PRINCIPAL PAYMENT (ONLY)           $ ___________________________
INTEREST PAYMENT (ONLY)            $ ___________________________
PRINCIPAL AND INTEREST (PAYMENT)   $ ___________________________

OTHER INSTRUCTIONS: ____________________________________________
________________________________________________________________

     All representations and warranties of Borrower stated in the
Loan Agreement are true, correct and complete in all material
respects as of the date of the telephone request for and Advance
confirmed by this Borrowing Certificate; provided, however, that
those representations and warranties expressly referring to
another date shall be true, correct and complete in all material
respects as of such date.



                              BANK USE ONLY

TELEPHONE REQUEST:

The following person is authorized to request the loan payment
transfer/loan advance on the advance designated account and is
known to me.


     ______________________________         _________________
          Authorized Requester                   Phone #


     ______________________________         _________________
          Received By (Bank)                     Phone #


                __________________________________________
                       Authorized Signature (Bank)

                             A-1
<PAGE>


                               EXHIBIT A-1

                     ADVANCE/CONVERSION REQUEST FORM

     The undersigned hereby certifies as follows:

     I, ______________ , am the duly elected and acting ______________
of Advanced Energy Industries, Inc.

     This certificate is delivered on behalf of Borrower to Silicon Valley
Bank, as Servicing Agent, pursuant to Section 2 of that certain Loan by and
between Borrower and Banks (the "Agreement").  The terms used in this
Borrowing Certificate which are defined in the Agreement have the same
meaning herein as ascribed to them therein.

     Borrower hereby requests on ______________, 19___ an Advance (the
"Advance") as follows:

     (a)  The date on which the Advance is to be made or converted into a
Term Advance is ______________, 19___.

     (b)  The amount of the Advance is to be ______________
($______________), in the form of a Prime Rate Advance of $______________; a
LIBOR Rate Advance for an Interest Period of ______________ months; an
Optional Currency Rate Advance of an Equivalent Amount of $ ______________ in
[currency type] for an Interest Period of ______________ months.

     All representations and warranties of Borrower stated in the Agreement
are true, correct and complete in all material respects as of the date of
this request for a loan; provided, however, that those representations and
warranties expressly referring to another date shall be true, correct and
complete in all material respects as of such date.

     IN WITNESS WHEREOF, this Advance Request Form is executed by the
undersigned as of this ______________ day of ______________ , 19___.

                                   ADVANCED ENERGY INDUSTRIES, INC.


                                   By:

                                   Title:
FOR INTERNAL BANK USE ONLY

 LIBOR Pricing     LIBOR Rate      LIBOR Rate     Maturity Date
     Date                           Variance
                                           ___%

   Optional         Optional        Optional      Maturity Date
   Currency      Currency Rate   Currency Rate
 Pricing Date                       Variance
                                           ___%

                             A-2
<PAGE>


                               EXHIBIT A-2


     Optional Currency/LIBOR RATE CONVERSION/CONTINUATION CERTIFICATE

     The undersigned hereby certifies as follows:

     I, ______________ , am the duly elected and acting ______________
of Advanced Energy Industries, Inc. ("Borrower").

     This certificate is delivered on behalf of Borrower to Silicon Valley
Bank, as Servicing Agent, pursuant to Section 2 of that certain Loan
Agreement between Borrower and Banks (the "Agreement").  The terms used in
this Optional Currency/LIBOR Rate Conversion/Continuation Certificate which
are defined in the Agreement have the same meaning herein as ascribed to them
therein.

     Borrower hereby requests on ______________ , 19___ a LIBOR Rate Advance
(the "Advance") as follows:

     (a)  __   (i)    A rate conversion of an existing Prime Rate
                      Advance from a Prime Rate Advance to a LIBOR
                      Rate Advance; or
          __   (ii)   A continuation of an existing LIBOR Rate
                      Advance as a LIBOR Rate Advance; or
          __   (iii)  A continuation of an existing Optional
                      Currency Rate Advance as an Optional Currency
                      Rate Advance.

                      [Check (i), (ii) or (iii) above]

     (b)  The date on which the Advance is to be made is ______________ ,
19___.

     (c)  The amount or the Equivalent Amount of the Advance is to be
______________ ($__________), for an Interest Period of ______________
month(s).

     All representations and warranties of Borrower stated in the Agreement
are true, correct and complete in all material respects as of the date of
this request for a loan; provided, however, that those representations and
warranties expressly referring to another date shall be true, correct and
complete in all material respects as of such date.

     IN WITNESS WHEREOF, this Optional Currency/LIBOR Rate
Conversion/Continuation Certificate is executed by the undersigned as of this
______________ day of ______________ , 19___.

                                   ADVANCED ENERGY INDUSTRIES, INC.


                                   By:

                                   Title:
FOR INTERNAL BANK USE ONLY

 LIBOR Pricing     LIBOR Rate      LIBOR Rate     Maturity Date
     Date                           Variance
                                           ___%

   Optional         Optional        Optional      Maturity Date
   Currency      Currency Rate   Currency Rate
 Pricing Date                       Variance
                                           ___%

                             A-3

<PAGE>
                                       
                                  EXHIBIT B
                           COMPLIANCE CERTIFICATE


TO:  SILICON VALLEY BANK
     BANK OF HAWAII

FROM:     ADVANCED ENERGY INDUSTRIES, INC.


The undersigned authorized officer of Advanced Energy Industries, Inc. hereby 
certifies that, in accordance with the terms and conditions of the Loan 
Agreement between Borrower and Banks (the "Agreement"), (i) Borrower is in 
complete compliance for the period ending __________________ with all 
required covenants except as noted below and (ii) all representations and 
warranties of Borrower stated in the Agreement are true and correct in all 
material respects as of the date hereof.  Attached herewith are the required 
documents supporting the above certification.  The Officer further certifies 
that these are prepared in accordance with Generally Accepted Accounting 
Principles (GAAP) and are consistently applied from one period to the next 
except as explained in an accompanying letter or footnotes.

PLEASE INDICATE COMPLIANCE STATUS BY CIRCLING YES/NO UNDER "COMPLIES" COLUMN.

   REPORTING COVENANT              REQUIRED                    COMPLIES
                                   
   Form 10-K                       Annually within 5 days      Yes  No
   Form 10-Q                       Quarterly within 5 days     Yes  No
                                   
                                   
   FINANCIAL COVENANT              REQUIRED       ACTUAL       COMPLIES
                                   
   Maintain on a Quarterly Basis:  
     Minimum Quick Ratio           1.75:1.00      _____:1.0    Yes  No
     Minimum Tangible Net Worth    $60,000,000_/1 $________    Yes  No
     Maximum Debt - Tangible Net   
                    Worth          0.65:1.00      _____:1.0    Yes  No
     Profitability                 
        Quarterly                  $1.00_/2       $________    Yes  No
        Debt Service Coverage      1.00:1.00      _____:1.00   Yes  No

/1 Plus 75% of quarterly net income beginning 12/31/98.
/2 One loss quarter permitted per fiscal year, up to $500,000.

COMMENTS REGARDING EXCEPTIONS:                   BANK USE ONLY
See Attached.
                                            Received by:
                                                    authorized signer
Sincerely,
                                            Date:
Signature
                                            Verified:
                                                    authorized signer
Title
                                            Date:
Date
                                            Compliance Status: Yes  No

                                      B-1
<PAGE>

                  DISBURSEMENT REQUEST AND AUTHORIZATION


Borrower:  Advanced Energy Industries, Inc. and Subsidiaries



LOAN TYPE.  This is a Revolving Line of Credit.

PRIMARY PURPOSE OF LOAN.  The primary purpose of this loan is for business.

SPECIFIC PURPOSE.  The specific purpose of this loan is: Short Term Working 
Capital and Equipment Finance.

DISBURSEMENT INSTRUCTIONS.  Borrower understands that no loan proceeds will 
be disbursed until all of Banks' conditions for making the loan have been 
satisfied.  Please disburse the loan proceeds as follows:

                                                  Revolving   
                                                  Line
     Amount paid to Borrower                      $0.0        
     directly:

     Undisbursed Funds                            $
                                                   ---------

                                                              
     Principal                                    $30,000,000

CHARGES PAID IN CASH.  Borrower has paid or will pay in cash as agreed the 
following charges:

     Prepaid  Finance Charges Paid in Cash:

          $         Outside Counsel Fees and Expenses (Estimate)
           ------

     Total Charges Paid in Cash         $
                                         ------

AUTOMATIC PAYMENTS.  Borrower hereby authorizes Banks to automatically deduct 
the amount of any loan payment from AEI's account no. 351030170 at Silicon 
Valley Bank.  If the funds in the accounts are insufficient to cover any 
payment, Banks shall not be obligated to advance funds to cover the payment.

FINANCIAL CONDITION.  BY SIGNING THIS AUTHORIZATION, BORROWER REPRESENTS AND 
WARRANTS TO BANKS THAT THE INFORMATION PROVIDED ABOVE IS TRUE AND CORRECT AND 
THAT THERE HAS BEEN NO ADVERSE CHANGE IN BORROWER'S FINANCIAL CONDITION AS 
DISCLOSED IN SUCH BORROWER'S MOST RECENT FINANCIAL STATEMENT TO BANKS.  THIS 
AUTHORIZATION IS DATED AS OF ______________ , 1997.

BORROWER:

ADVANCED ENERGY INDUSTRIES, INC.


Authorized Officer

<PAGE>

                                       
                       CORPORATE RESOLUTIONS TO BORROW


BORROWER:   Advanced Energy Industries, Inc.


     I, the undersigned Secretary or Assistant Secretary of Advanced Energy 
Industries, Inc. (the "Corporation"), HEREBY CERTIFY that the Corporation is 
organized and existing under and by virtue of the laws of the State of 
Delaware.

     I FURTHER CERTIFY that at a meeting of the Directors of the Corporation 
(or by other duly authorized corporate action in lieu of a meeting), duly 
called and held, at which a quorum was present and voting, the following 
resolutions were adopted.

     BE IT RESOLVED, that ANY ONE (1) of the following named officers, 
employees, or agents of this Corporation, whose actual signatures are shown 
below:

     NAMES              POSITIONS       ACTUAL SIGNATURES


- ------------------  ------------------  ------------------

- ------------------  ------------------  ------------------

- ------------------  ------------------  ------------------

- ------------------  ------------------  ------------------

- ------------------  ------------------  ------------------

acting for an on behalf of this Corporation and as its act and deed be, and 
they hereby are, authorized and empowered:

     BORROW MONEY.  To borrow from time to time from Bank of Hawaii and 
Silicon Valley Bank ("Banks"), on such terms as may be agreed upon between 
the officers, employees, or agents and Bank, such sum or sums of money as in 
their judgment should be borrowed, without limitation, including such sums as 
are specified in that certain Loan and Security Agreement dated as of 
December 8, 1997 (the "Loan Agreement").

     EXECUTE NOTES.  To execute and deliver to Banks the promissory note or 
notes of the Corporation, on each Bank's forms, at such rates of interest and 
on such terms as may be agreed upon, evidencing the sums of money so borrowed 
or any indebtedness of the Corporation to Banks, and also to execute and 
deliver to Banks one or more renewals, extensions, modifications, 
refinancings, consolidations, or substitutions for one or more of the notes, 
or any portion of the notes.

     NEGOTIATE ITEMS.  To draw, endorse, and discount with Banks all drafts, 
trade acceptances, promissory notes, or other evidences of indebtedness 
payable to or belonging to the Corporation or in which the Corporation may 
have an interest, and either to receive cash for the same or to cause such 
proceeds to be credited to the account of the Corporation with Banks, or to 
cause such other disposition of the proceeds derived therefrom as they may 
deem advisable.

                                       1
<PAGE>


     LETTERS OF CREDIT.  To execute letter of credit application and other 
related documents pertaining to SVB's issuance of letters of credit.

     FOREIGN EXCHANGE CONTRACTS.  To request any Bank to enter into foreign 
exchange contracts on its behalf.

     FURTHER ACTS.  In the case of lines of credit, to designate additional 
or alternate individuals as being authorized to request advances thereunder, 
and in all cases, to do and perform such other acts and things, to pay any 
and all fees and costs, and to execute and deliver such other documents and 
agreements as they may in their discretion deem reasonably necessary or 
proper in order to carry into effect the provisions of these Resolutions.

     BE IT FURTHER RESOLVED, that any and all acts authorized pursuant to 
these resolutions and performed prior to the passage of these resolutions are 
hereby ratified and approved, that these Resolutions shall remain in full 
force and effect and Banks may rely on these Resolutions until written notice 
of their revocation shall have been delivered to and received by Bank. Any 
such notice shall not affect any of the Corporation's agreements or 
commitments in effect at the time notice is given.

     I FURTHER CERTIFY that the officers, employees, and agents named above 
are duly elected, appointed, or employed by or for the Corporation, as the 
case may be, and occupy the positions set forth opposite their respective 
names; that the foregoing Resolutions now stand of record on the books of the 
Corporation; and that the Resolutions are in full force and effect and have 
not been modified or revoked in any manner whatsoever.

     I FURTHER CERTIFY that attached hereto are true and correct copies of 
the Certificate of Incorporation and Bylaws of the Corporation.

     IN WITNESS WHEREOF, I have hereunto set my hand on _______________ , 
19___ and attest that the signatures set opposite the names listed above are 
their genuine signatures.

                                   CERTIFIED TO AND ATTESTED BY:

                                   X
                                    ------------------------------



                                       2

<PAGE>
                                       
                       ADVANCED ENERGY INDUSTRIES, INC.

                           1995 STOCK OPTION PLAN


                            ADOPTED JUNE 6, 1993
                 AS AMENDED AND RESTATED SEPTEMBER 20, 1995
                  AND AS FURTHER AMENDED FEBRUARY 10, 1998

1.   PURPOSES.

     (a)  The purpose of the Plan is to provide a means by which selected 
Employees and Directors of and Consultants to the Company, and its 
Affiliates, may be given an opportunity to purchase stock of the Company.

     (b)  The Company, by means of the Plan, seeks to retain the services of 
persons who are now Employees or Directors of or Consultants to the Company 
or its Affiliates, to secure and retain the services of new Employees, 
Directors and Consultants, and to provide incentives for such persons to 
exert maximum efforts for the success of the Company and its Affiliates.

     (c)  The Company intends that the Options issued under the Plan shall, 
in the discretion of the Board or any Committee to which responsibility for 
administration of the Plan has been delegated pursuant to subsection 3(c), be 
either Incentive Stock Options or Nonstatutory Stock Options. All Options 
shall be separately designated Incentive Stock Options or Nonstatutory Stock 
Options at the time of grant, and in such form as issued pursuant to Section 
6, and a separate certificate or certificates will be issued for shares 
purchased on exercise of each type of Option.

2.  DEFINITIONS.

     (a)  "AFFILIATE" means any parent corporation or subsidiary corporation, 
whether now or hereafter existing, as those terms are defined in Sections 
424(e) and (f) respectively, of the Code.

     (b)  "BOARD" means the Board of Directors of the Company.

     (c)  "CODE" means the Internal Revenue Code of 1986, as amended.

     (d)  "COMMITTEE" means a Committee appointed by the Board in accordance 
with subsection 3(c) of the Plan.

                                       1
<PAGE>


     (e)  "COMPANY" means Advanced Energy Industries, Inc., a Delaware 
corporation.

     (f)  "CONSULTANT" means any person, including an advisor, engaged by the 
Company or an Affiliate to render consulting services and who is compensated 
for such services, provided that the term "Consultant" shall not include 
Directors who are paid only a director's fee by the Company or who are not 
compensated by the Company for their services as Directors.

     (g)  "CONTINUOUS STATUS AS AN EMPLOYEE, DIRECTOR OR CONSULTANT" means 
the employment or relationship as a Director or Consultant is not interrupted 
or terminated. The Board, in its sole discretion, may determine whether 
Continuous Status as an Employee, Director or Consultant shall be considered 
interrupted in the case of: (i) any leave of absence approved by the Board, 
including sick leave, military leave, or any other personal leave; or (ii) 
transfers between locations of the Company or between the Company, Affiliates 
or their successors.

     (h)  "COVERED EMPLOYEE" means the Chief Executive Officer and the four 
(4) other highest compensated officers of the Company.

     (i)  "DIRECTOR" means a member of the Board.

     (j)  "DISINTERESTED PERSON" means a Director who either (i) was not 
during the one year prior to service as an administrator of the Plan granted 
or awarded equity securities pursuant to the Plan or any other plan of the 
Company or any of its affiliates entitling the participants therein to 
acquire equity securities of the Company or any of its affiliates except as 
permitted by Rule 16b-3(c)(2)(i); or (ii) is otherwise considered to be a 
"disinterested person" in accordance with Rule 16b-3(c)(2)(i), or any other 
applicable rules, regulations or interpretations of the Securities and 
Exchange Commission.

     (k)  "EMPLOYEE" means any person, including Officers and Directors, 
employed by the Company or any Affiliate of the Company. Neither service as a 
Director nor payment of a director's fee by the Company shall be sufficient 
to constitute "employment" by the Company.

     (1)  "EXCHANGE ACT" means the Securities Exchange Act of 1934, as 
amended.

                                       2
<PAGE>


     (m)  "FAIR MARKET VALUE" means the value of the common stock as 
determined in good faith by the Board and in a manner consistent with Section 
260.140.50 of Title 10 of the California Code of Regulations.

     (n)  "INCENTIVE STOCK OPTION" means an Option intended to qualify as an 
incentive stock option within the meaning of Section 422 of the Code and the 
regulations promulgated thereunder.

     (o)  "NONSTATUTORY STOCK OPTION" means an Option not intended to qualify 
as an Incentive Stock Option.

     (p)  "OFFICER" means a person who is an officer of the Company within 
the meaning of Section 16 of the Exchange Act and the rules and regulations 
promulgated thereunder.

     (q)  "OPTION" means a stock option granted pursuant to the Plan.

     (r)  "OPTION AGREEMENT" means a written agreement between the Company 
and an Optionee evidencing the terms and conditions of an individual Option 
grant. Each Option Agreement shall be subject to the terms and conditions of 
the Plan.

     (s)  "OPTIONEE" means an Employee, Director or Consultant who holds an 
outstanding Option.

     (t)   "OUTSIDE DIRECTOR" means a Director who either (i) is not a 
current employee of the Company or an "affiliated corporation" (as defined in 
the Treasury regulations promulgated under Section 162(m) of the Code), is 
not a former employee of the Company or an affiliated corporation receiving 
compensation for prior services (other than benefits under a tax qualified 
pension plan), was not an officer of the Company or an affiliated corporation 
at any time, and is not currently receiving compensation for personal 
services in any capacity other than as a Director, or (ii) is otherwise 
considered an "outside director" for purposes of Section 162(m) of the Code.

     (u)  "PLAN" means this 1995 Stock Option Plan.

     (v)  "RULE 16B-3" means Rule 16b-3 of the Exchange Act or any successor 
to Rule 16b-3, as in effect when discretion is being exercised with respect 
to the Plan.

                                       3
<PAGE>


3.   ADMINISTRATION.

     (a)  The Plan shall be administered by the Board unless and until the 
Board delegates administration to a Committee, as provided in subsection 3(c).

     (b)  The Board shall have the power, subject to, and within the 
limitations of, the express provisions of the Plan:

          (1)  To determine from time to time which of the persons eligible 
under the Plan shall be granted Options; when and how each Option shall be 
granted; whether an Option will be an Incentive Stock Option or a 
Nonstatutory Stock Option; the provisions of each Option granted (which need 
not be identical), including the time or times such Option may be exercised 
in whole or in part; and the number of shares for which an Option shall be 
granted to each such person.

          (2)  To construe and interpret the Plan and Options granted under 
it, and to establish, amend and revoke rules and regulations for its 
administration. The Board, in the exercise of this power, may correct any 
defect, omission or inconsistency in the Plan or in any Option Agreement, in 
a manner and to the extent it shall deem necessary or expedient to make the 
Plan fully effective.

          (3)  To amend the Plan as provided in Section 11.

     (c)  The Board may delegate administration of the Plan to a committee 
composed of not fewer than two (2) members (the "Committee"), all of the 
members of which Committee shall be Disinterested Persons and may also be, in 
the discretion of the Board, Outside Directors. If administration is 
delegated to a Committee, the Committee shall have, in connection with the 
administration of the Plan, the powers theretofore possessed by the Board 
(and references in this Plan to the Board shall thereafter be to the 
Committee), subject, however, to such resolutions, not inconsistent with the 
provisions of the Plan, as may be adopted from time to time by the Board. The 
Board may abolish the Committee at any time and revest in the Board the 
administration of the Plan. Additionally, prior to the date of the first 
registration of an equity security of the Company under Section 12 of the 
Exchange Act, and notwithstanding anything to the contrary contained

                                       4
<PAGE>


herein, the Board may delegate administration of the Plan to any person or 
persons and the term "Committee" shall apply to any person or persons to whom 
such authority has been delegated. Notwithstanding anything in this Section 3 
to the contrary, the Board or the Committee may delegate to a committee of 
one or more members of the Board the authority to grant Options to eligible 
persons who (1) are not then subject to Section 16 of the Exchange Act and/or 
(2) are either (i) not then Covered Employees and are not expected to be 
Covered Employees at the time of recognition of income resulting from such 
Option, or (ii) not persons with respect to whom the Company wishes to comply 
with Section 162(m) of the Code.

     (d)  Any requirement that an administrator of the Plan be a 
Disinterested Person shall not apply (i) prior to the date of the first 
registration of an equity security of the Company under Section 12 of the 
Exchange Act, or (ii) if the Board or the Committee expressly declares that 
such requirement shall not apply. Any Disinterested Person shall otherwise 
comply with the requirements of Rule 16b-3.

4.  SHARES SUBJECT TO THE PLAN.

     (a)  Subject to the provisions of Section 10 relating to adjustments 
upon changes in stock, the stock that may be sold pursuant to Options shall 
not exceed in the aggregate four million six hundred twenty-five thousand 
(4,625,000) shares of the Company's common stock. If any Option shall for any 
reason expire or otherwise terminate, in whole or in part, without having 
been exercised in full, the stock not purchased under such Option shall 
revert to and again become available for issuance under the Plan.

     (b)  The stock subject to the Plan may be unissued shares or reacquired 
shares, bought on the market or otherwise.

5.  ELIGIBILITY.

     (a)  Incentive Stock Options may be granted only to Employees. 
Nonstatutory Stock Options may be granted only to Employees, Directors or 
Consultants.

                                       5
<PAGE>


     (b)  A Director shall in no event be eligible for the benefits of the 
Plan unless at the time discretion is exercised in the selection of the 
Director as a person to whom Options may be granted, or in the determination 
of the number of shares which may be covered by Options granted to the 
Director: (i) the Board has delegated its discretionary authority over the 
Plan to a Committee which consists solely of Disinterested Persons; or (ii) 
the Plan otherwise complies with the requirements of Rule 16b-3. The Board 
shall otherwise comply with the requirements of Rule 16b-3. This subsection 
5(b) shall not apply (i) prior to the date of the first registration of an 
equity security of the Company under Section 12 of the Exchange Act, or (ii) 
if the Board or Committee expressly declares that it shall not apply.

     (c)  No person shall be eligible for the grant of an Option if, at the 
time of grant, such person owns (or is deemed to own pursuant to Section 
424(d) of the Code) stock possessing more than ten percent (10%) of the total 
combined voting power of all classes of stock of the Company or of any of its 
Affiliates unless the exercise price of such Option is at least one hundred 
ten percent (110%) of the Fair Market Value of such stock at the date of 
grant and the Option is not exercisable after the expiration of five (5) 
years from the date of grant.

     (d)  Subject to the provisions of Section 10 relating to adjustments 
upon changes in stock, no person shall be eligible to be granted Options 
covering more than three hundred thousand (300,000) shares of the Company's 
common stock in any calendar year.

6.   OPTION PROVISIONS.

     Each Option shall be in such form and shall contain such terms and 
conditions as the Board shall deem appropriate. The provisions of separate 
Options need not be identical, but each Option shall include (through 
incorporation of provisions hereof by reference in the Option or otherwise) 
the substance of each of the following provisions:

     (a)  TERM.  No Option shall be exercisable after the expiration of ten 
(10) years from the date it was granted.

                                       6
<PAGE>


     (b)  PRICE.  The exercise price of each Incentive Stock Option shall be 
not less than one hundred percent (100%) of the Fair Market Value of the 
stock subject to the Option on the date the Option is granted. The exercise 
price of each Nonstatutory Stock Option shall be not less than eighty-five 
percent (85%) of the Fair Market Value of the stock subject to the Option on 
the date the Option is granted.

     (c)  CONSIDERATION.  The purchase price of stock acquired pursuant to an 
Option shall be paid, to the extent permitted by applicable statutes and 
regulations, either (i) in cash at the time the Option is exercised, or (ii) 
at the discretion of the Board or the Committee, either at the time of the 
grant or exercise of the Option, (A) by delivery to the Company of other 
common stock of the Company, (B) according to a deferred payment or other 
arrangement (which may include, without limiting the generality of the 
foregoing, the use of other common stock of the Company) with the person to 
whom the Option is granted or to whom the Option is transferred pursuant to 
subsection 6(d), or (C) in any other form of legal consideration that may be 
acceptable to the Board.

      In the case of any deferred payment arrangement, interest shall be 
payable at least annually and shall be charged at the minimum rate of 
interest necessary to avoid the treatment as interest, under any applicable 
provisions of the Code, of any amounts other than amounts stated to be 
interest under the deferred payment arrangement.

     (d)  TRANSFERABILITY.  An Incentive Stock Option shall not be 
transferable except by will or by the laws of descent and distribution, and 
shall be exercisable during the lifetime of the person to whom the Incentive 
Stock Option is granted only by such person. A Nonstatutory Stock Option 
shall not be transferable except by will or by the laws of descent and 
distribution or pursuant to a qualified domestic relations order satisfying 
the requirements of Rule 16b-3 and the rules thereunder (a "QDRO"), and shall 
be exercisable during the lifetime of the person to whom the Option is 
granted only by such person or any transferee pursuant to a QDRO. The person 
to whom the Option is granted may, by delivering written notice to the 
Company, in a form satisfactory to

                                       7
<PAGE>


the Company, designate a third party who, in the event of the death of the 
Optionee, shall thereafter be entitled to exercise the Option.

     (e)  VESTING.  The total number of shares of stock subject to an Option 
may, but need not, be allotted in periodic installments (which may, but need 
not, be equal). The Option Agreement may provide that from time to time 
during each of such installment periods, the Option may become exercisable 
("vest") with respect to some or all of the shares allotted to that period, 
and may be exercised with respect to some or all of the shares allotted to 
such period and/or any prior period as to which the Option became vested but 
was not fully exercised. The Option may be subject to such other terms and 
conditions on the time or times when it may be exercised (which may be based 
on performance or other criteria) as the Board may deem appropriate. The 
vesting provisions of individual Options may vary but in each case will 
provide for vesting of at least twenty percent (20%) per year of the total 
number of shares subject to the Option. The provisions of this subsection 
6(e) are subject to any Option provisions governing the minimum number of 
shares as to which an Option may be exercised.

     (f)  SECURITIES LAW COMPLIANCE. The Company may require any Optionee, or 
any person to whom an Option is transferred under subsection 6(d), as a 
condition of exercising any such Option, (1) to give written assurances 
satisfactory to the Company as to the Optionee's knowledge and experience in 
financial and business matters and/or to employ a purchaser representative 
reasonably satisfactory to the Company who is knowledgeable and experienced 
in financial and business matters, and that he or she is capable of 
evaluating, alone or together with the purchaser representative, the merits 
and risks of exercising the Option; and (2) to give written assurances 
satisfactory to the Company stating that such person is acquiring the stock 
subject to the Option for such person's own account and not with any present 
intention of selling or otherwise distributing the stock. The foregoing 
requirements, and any assurances given pursuant to such requirements, shall 
be inoperative if (i) the issuance of the shares upon the exercise of the 
Option has been registered under a then currently effective registration 
statement under the Securities Act

                                       8
<PAGE>


of 1933, as amended (the "Securities Act"), or (ii) as to any particular 
requirement, a determination is made by counsel for the Company that such 
requirement need not be met in the circumstances under the then applicable 
securities laws. The Company may, upon advice of counsel to the Company, 
place legends on stock certificates issued under the Plan as such counsel 
deems necessary or appropriate in order to comply with applicable securities 
laws, including, but not limited to, legends restricting the transfer of the 
stock.

      (g)  TERMINATION OF EMPLOYMENT OR RELATIONSHIP AS A DIRECTOR OR 
CONSULTANT. In the event an Optionee's Continuous Status as an Employee, 
Director or Consultant terminates (other than upon the Optionee's death or 
disability), the Optionee may exercise his or her Option (to the extent that 
the Optionee was entitled to exercise it at the date of termination) but only 
within such period of time ending on the earlier of (i) the date three (3) 
months after the termination of the Optionee's Continuous Status as an 
Employee, Director or Consultant (or such longer or shorter period, which in 
no event shall be less than thirty (30) days, specified in the Option 
Agreement), or (ii) the expiration of the term of the Option as set forth in 
the Option Agreement. If, after termination, the Optionee does not exercise 
his or her Option within the time specified in the Option Agreement, the 
Option shall terminate, and the shares covered by such Option shall revert to 
and again become available for issuance under the Plan.

     (h)  DISABILITY OF OPTIONEE. In the event an Optionee's Continuous 
Status as an Employee, Director or Consultant terminates as a result of the 
Optionee's disability, the Optionee may exercise his or her Option (to the 
extent that the Optionee was entitled to exercise it at the date of 
termination), but only within such period of time ending on the earlier of 
(i) the date twelve (12) months following such termination (or such longer or 
shorter period, which in no event shall be less than six (6) months, 
specified in the Option Agreement), or (ii) the expiration of the term of the 
Option as set forth in the Option Agreement. If, at the date of termination, 
the Optionee is not entitled to exercise his or her entire Option, the shares 
covered by the unexercisable portion of the Option shall revert to and again 
become available for issuance under the Plan. If, after termination,

                                       9
<PAGE>


the Optionee does not exercise his or her Option within the time specified 
herein, the Option shall terminate, and the shares covered by such Option 
shall revert to and again become available for issuance under the Plan.

     (i)  DEATH OF OPTIONEE.  In the event of the death of an Optionee 
during, or within a period specified in the Option after the termination of, 
the Optionee's Continuous Status as an Employee, Director or Consultant, the 
Option may be exercised (to the extent the Optionee was entitled to exercise 
the Option at the date of death) by the Optionee's estate, by a person who 
acquired the right to exercise the Option by bequest or inheritance or by a 
person designated to exercise the option upon the Optionee's death pursuant 
to subsection 6(d), but only within the period ending on the earlier of (i) 
the date eighteen (18) months following the date of death (or such longer or 
shorter period, which in no event shall be less than six (6) months, 
specified in the Option Agreement), or (ii) the expiration of the term of 
such Option as set forth in the Option Agreement. If, at the time of death, 
the Optionee was not entitled to exercise his or her entire Option, the 
shares covered by the unexercisable portion of the Option shall revert to and 
again become available for issuance under the Plan. If, after death, the 
Option is not exercised within the time specified herein, the Option shall 
terminate, and the shares covered by such Option shall revert to and again 
become available for issuance under the Plan.

     (j)  EARLY EXERCISE.  The Option may, but need not, include a provision 
whereby the Optionee may elect at any time while an Employee, Director or 
Consultant to exercise the Option as to any part or all of the shares subject 
to the Option prior to the full vesting of the Option. Any unvested shares so 
purchased shall be subject to a repurchase right in favor of the Company, 
with the repurchase price to be equal to the original purchase price of the 
stock, or to any other restriction the Board determines to be appropriate; 
provided, however, that (i) the right to repurchase at the original purchase 
price shall lapse at a minimum rate of twenty percent (20%) per year over 
five (5) years from the date the Option was granted, and (ii) such right 
shall be exercisable only within (A) the ninety (90) day period following the 
termination of employment or

                                      10
<PAGE>


the relationship as a Director or Consultant, or (B) such longer period as 
may be agreed to by the Company and the Optionee (for example, for purposes 
of satisfying the requirements of Section 1202(c)(3) of the Code (regarding 
"qualified small business stock")), and (iii) such right shall be exercisable 
only for cash or cancellation of purchase money indebtedness for the shares. 
Should the right of repurchase be assigned by the Company, the assignee shall 
pay the Company cash equal to the difference between the original purchase 
price and the stock's Fair Market Value if the original purchase price is 
less than the stock's Fair Market Value.

     (k)  WITHHOLDING. To the extent provided by the terms of an Option 
Agreement, the Optionee may satisfy any federal, state or local tax 
withholding obligation relating to the exercise of such Option by any of the 
following means or by a combination of such means: (1) tendering a cash 
payment; (2) authorizing the Company to withhold shares from the shares of 
the common stock otherwise issuable to the participant as a result of the 
exercise of the Option; or (3) delivering to the Company owned and 
unencumbered shares of the common stock of the Company.

7.  COVENANTS OF THE COMPANY.

     (a)  During the terms of the Options, the Company shall keep available 
at all times the number of shares of stock required to satisfy such Options.

     (b)  The Company shall seek to obtain from each regulatory commission or 
agency having jurisdiction over the Plan such authority as may be required to 
issue and sell shares of stock upon exercise of the Options; provided, 
however, that this undertaking shall not require the Company to register 
under the Securities Act either the Plan, any Option or any stock issued or 
issuable pursuant to any such Option. If, after reasonable efforts, the 
Company is unable to obtain from any such regulatory commission or agency the 
authority which counsel for the Company deems necessary for the lawful 
issuance and sale of stock under the Plan, the Company shall be relieved from 
any liability for failure to issue and sell stock upon exercise of such 
Options unless and until such authority is obtained.

8.  USE OF PROCEEDS FROM STOCK.

                                       11
<PAGE>


     Proceeds from the sale of stock pursuant to Options shall constitute 
general funds of the Company.

9.   MISCELLANEOUS.

     (a)  Neither an Optionee nor any person to whom an Option is transferred 
under subsection 6(d) shall be deemed to be the holder of, or to have any of 
the rights of a holder with respect to, any shares subject to such Option 
unless and until such person has satisfied all requirements for exercise of 
the Option pursuant to its terms.

     (b)  Throughout the term of any Option, the Company shall deliver to the 
holder of such Option, not later than one hundred twenty (120) days after the 
close of each of the Company's fiscal years during the Option term, a balance 
sheet and an income statement. This section shall not apply when issuance is 
limited to key employees whose duties in connection with the Company assure 
them access to equivalent information.

     (c)  Nothing in the Plan or any instrument executed or Option granted 
pursuant thereto shall confer upon any Employee, Director, Consultant or 
Optionee any right to continue in the employ of the Company or any Affiliate 
or to continue acting as a Director or Consultant or shall affect the right 
of the Company or any Affiliate to terminate the employment or relationship 
as a Director or Consultant of any Employee, Director, Consultant or Optionee 
with or without cause.

     (d)  To the extent that the aggregate Fair Market Value (determined at 
the time of grant) of stock with respect to which Incentive Stock Options 
granted after 1986 are exercisable for the first time by any Optionee during 
any calendar year under all plans of the Company and its Affiliates exceeds 
one hundred thousand dollars ($100,000), the Options or portions thereof 
which exceed such limit (according to the order in which they were granted) 
shall be treated as Nonstatutory Stock Options.

     (e)  (1)  The Board or the Committee shall have the authority to effect, 
at any time and from time to time (i) the repricing of any outstanding 
Options under the Plan and/or (ii) with the consent of the affected holders 
of Options, the cancellation of any outstanding Options and the

                                      12
<PAGE>


grant in substitution therefor of new Options under the Plan covering the 
same or different numbers of shares of Common Stock, but having an exercise 
price per share not less than eighty-five percent (85%) of the Fair Market 
Value (one hundred percent (100%) of the Fair Market Value in the case of an 
Incentive Stock Option or, in the case of a ten percent (10%) stockholder (as 
defined in subsection 5(c)), not less than one hundred and ten percent (110%) 
of the Fair Market Value) per share of Common Stock on the new grant date.

     (2)  Shares subject to an Option canceled under this subsection 9(e) 
shall continue to be counted against the maximum award of Options permitted 
to be granted pursuant to subsection 5(d) of the Plan. The repricing of an 
Option under this subsection 9(e), resulting in a reduction of the exercise 
price, shall be deemed to be a cancellation of the original Option and the 
grant of a substitute Option; in the event of such repricing, both the 
original and the substituted Options shall be counted against the maximum 
awards of Options permitted to be granted pursuant to subsection 5(d) of the 
Plan. The provisions of this subsection 9(e) shall be applicable only to the 
extent required by Section 162(m) of the Code.

10. ADJUSTMENTS UPON CHANGES IN STOCK.

     (a)  If any change is made in the stock subject to the Plan, or subject 
to any Option (through merger, consolidation, reorganization, 
recapitalization, stock dividend, dividend in property other than cash, stock 
split, liquidating dividend, combination of shares, exchange of shares, 
change in corporate structure or otherwise), the Plan will be appropriately 
adjusted in the class(es) and maximum number of shares subject to the Plan 
pursuant to subsection 4(a) and the maximum number of shares subject to award 
to any person during any calendar year pursuant to subsection 5(d), and the 
outstanding Options will be appropriately adjusted in the class(es) and 
number of shares and price per share of stock subject to such outstanding 
Options.

   (b)  In the event of: (1) a merger or consolidation in which the Company 
is not the surviving corporation or (2) a reverse merger in which the Company 
is the surviving corporation but the shares of the Company's common stock 
outstanding immediately preceding the merger are

                                      13
<PAGE>


converted by virtue of the merger into other property, whether in the form of 
securities, cash or otherwise then to the extent permitted by applicable law: 
(i) any surviving corporation shall assume any Options outstanding under the 
Plan or shall substitute similar Options for those outstanding under the 
Plan, or (ii) such Options shall continue in full force and effect. In the 
event any surviving corporation refuses to assume or continue such Options, 
or to substitute similar options for those outstanding under the Plan, then 
such Options shall be terminated if not exercised prior to such event. In the 
event of a dissolution or liquidation of the Company, any Options outstanding 
under the Plan shall terminate if not exercised prior to such event.

11. AMENDMENT OF THE PLAN.

     (a)   The Board at any time, and from time to time, may amend the Plan. 
However, except as provided in Section 10 relating to adjustments upon 
changes in stock, no amendment shall be effective unless approved by the 
stockholders of the Company within twelve (12) months before or after the 
adoption of the amendment, where the amendment will:

          (1)  Increase the number of shares reserved for Options under the 
Plan;

          (2)  Modify the requirements as to eligibility for participation in 
the Plan (to the extent such modification requires stockholder approval in 
order for the Plan to satisfy the requirements of Section 422 of the Code); or

          (3)  Modify the Plan in any other way if such modification requires 
stockholder approval in order for the Plan to satisfy the requirements of 
Section 422 of the Code or to comply with the requirements of Rule 16b-3.

     (b)  The Board may in its sole discretion submit any other amendment to 
the Plan for stockholder approval, including, but not limited to, amendments 
to the Plan intended to satisfy the requirements of Section 162(m) of the 
Code and the regulations promulgated thereunder regarding the exclusion of 
performance-based compensation from the limit on corporate deductibility of 
compensation paid to certain executive officers.

                                      14
<PAGE>


     (c)  It is expressly contemplated that the Board may amend the Plan in 
any respect the Board deems necessary or advisable to provide Optionees with 
the maximum benefits provided or to be provided under the provisions of the 
Code and the regulations promulgated thereunder relating to Incentive Stock 
Options and/or to bring the Plan and/or Incentive Stock Options granted under 
it into compliance therewith.

     (d)  Rights and obligations under any Option granted before amendment of 
the Plan shall not be altered or impaired by any amendment of the Plan unless 
(i) the Company requests the consent of the person to whom the Option was 
granted and (ii) such person consents in writing.

12. TERMINATION OR SUSPENSION OF THE PLAN.

     (a)  The Board may suspend or terminate the Plan at any time. Unless 
sooner terminated, the Plan shall terminate on June 5, 2003 which shall be 
within ten (10) years from the date the Plan is adopted by the Board or 
approved by the stockholders of the Company, whichever is earlier. No Options 
may be granted under the Plan while the Plan is suspended or after it is 
terminated.

     (b)  Rights and obligations under any Option granted while the Plan is 
in effect shall not be altered or impaired by suspension or termination of 
the Plan, except with the consent of the person to whom the Option was 
granted.

13. EFFECTIVE DATE OF PLAN.

     The Plan shall become effective as determined by the Board, but no 
Options granted under the Plan shall be exercised unless and until the Plan 
has been approved by the stockholders of the Company, which approval shall be 
within twelve (12) months before or after the date the Plan is adopted by the 
Board, and, if required, an appropriate permit has been issued by the 
Commissioner of Corporations of the State of California.

                                      15

<PAGE>
                                       
                                                                  Exhibit 23.1

                                  [LETTERHEAD]

                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


As independent public accountants, we hereby consent to the incorporation of 
our report included in this Form 10-K, into the Company's previously filed 
Registration Statement File Nos. 333-01616, 333-04073 and 333-46705.



                                          /s/ ARTHUR ANDERSEN LLP


Denver, Colorado,
March 24, 1998.


<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1995
<PERIOD-START>                             JAN-01-1995
<PERIOD-END>                               DEC-31-1995
<CASH>                                          13,332
<SECURITIES>                                         0
<RECEIVABLES>                                   15,382
<ALLOWANCES>                                     (210)
<INVENTORY>                                     16,104
<CURRENT-ASSETS>                                46,302
<PP&E>                                          10,273
<DEPRECIATION>                                 (3,634)
<TOTAL-ASSETS>                                  55,319
<CURRENT-LIABILITIES>                           12,553
<BONDS>                                              0
                                0
                                          0
<COMMON>                                            21
<OTHER-SE>                                      41,066
<TOTAL-LIABILITY-AND-EQUITY>                    55,319
<SALES>                                         94,708
<TOTAL-REVENUES>                                94,708
<CGS>                                           49,314
<TOTAL-COSTS>                                   49,314
<OTHER-EXPENSES>                                23,916
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 612
<INCOME-PRETAX>                                 21,085
<INCOME-TAX>                                     7,804
<INCOME-CONTINUING>                             13,281
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    13,281
<EPS-PRIMARY>                                     0.73
<EPS-DILUTED>                                     0.69
        

</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               DEC-31-1997
<CASH>                                          11,470
<SECURITIES>                                    20,174
<RECEIVABLES>                                   28,814
<ALLOWANCES>                                     (428)
<INVENTORY>                                     26,243
<CURRENT-ASSETS>                                91,581
<PP&E>                                          18,348
<DEPRECIATION>                                 (7,017)
<TOTAL-ASSETS>                                 112,243
<CURRENT-LIABILITIES>                           24,873
<BONDS>                                              0
                                0
                                          0
<COMMON>                                            22
<OTHER-SE>                                      87,326
<TOTAL-LIABILITY-AND-EQUITY>                   112,243
<SALES>                                        141,923
<TOTAL-REVENUES>                               141,923
<CGS>                                           87,538
<TOTAL-COSTS>                                   87,538
<OTHER-EXPENSES>                                37,380
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 329
<INCOME-PRETAX>                                 17,031
<INCOME-TAX>                                     6,669
<INCOME-CONTINUING>                             10,362
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    10,362
<EPS-PRIMARY>                                     0.48
<EPS-DILUTED>                                     0.47
        

</TABLE>


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission