EXHIBIT A
                              REVOLVING CREDIT NOTE


$5,000,000                                                 December 30, 1998


         FOR VALUE RECEIVED, Performance Technologies,  Incorporated, a Delaware
corporation (the "Borrower"), hereby promises to pay to The Chase Manhattan Bank
(the  "Bank"),  for account of its  Lending  Office  provided  for by the Credit
Agreement  dated as of December  30, 1998 between the Borrower and the Bank (the
"Credit  Agreement"),  or order, at the Payment Office the principal sum of Five
Million and No/100 Dollars ($5,000,000) or such portion thereof as may have been
advanced by the Bank  pursuant to Article 2 of the Credit  Agreement,  in lawful
money of the United States of America and in immediately available funds, on the
dates and in the amounts provided in the Credit  Agreement,  and to pay interest
on the unpaid  principal  amount hereof from time to time  outstanding,  at such
office,  in like money and funds, for the period  commencing on the date of this
Note until such  principal sum shall be paid in full, at the rates per annum and
on the dates provided in the Credit Agreement.

         The  amount,  type  and  date of  each  Loan  made  by the  Bank to the
Borrower,  and each payment made on account of the principal  thereof,  shall be
recorded  by the Bank on its books  and,  prior to any  transfer  of this  Note,
endorsed  by the  Bank  on the  schedule  attached  hereto  or any  continuation
thereof, provided, however, that the failure of the Bank to endorse the schedule
shall not affect or impair the  Borrower's  obligation  to repay any Loan or any
interest thereon or any other amount due under the Credit Agreement.

         This Note is the Note referred to in the Credit Agreement and evidences
all Loans made by the Bank thereunder.  Capitalized terms used in this Note have
the respective meanings assigned to them in the Credit Agreement.

         The Credit  Agreement  provides for the acceleration of the maturity of
this Note upon the  occurrence of certain  events and for  prepayments  of Loans
upon the terms and conditions specified therein.

         This Note shall be governed by and  construed  in  accordance  with the
laws of the State of New York.


                     PERFORMANCE TECHNOLOGIES, INCORPORATED

                      By:_________________________________

                      Name:_______________________________

                      Title:______________________________



<PAGE>




                                  ANNEX TO NOTE

--------------- -------------- ----------- ----------- ----------- ----------
                                Principal   Principal     Unpaid
 Date of Loan    Type of Loan     Amount     Amount     Principal   Notation
                                 of Loan     Paid or      Amount     Made By
                   Prepaid
--------------- -------------- ----------- ----------- ----------- ----------



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



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<PAGE>




                                    EXHIBIT B

                          ANNUAL COMPLIANCE CERTIFICATE


         This  Compliance  Certificate  is rendered to The Chase  Manhattan Bank
(the "Bank") by Performance Technologies, Incorporated (the "Borrower") pursuant
to ss.  8.06(a)(iii) of the Credit  Agreement  between The Bank and the Borrower
dated December ___, 1998 (the "Credit Agreement").

         The  undersigned  hereby  certifies  that in respect of the fiscal year
ending December ___, 19___ (the "Year"):

         1. The Borrower was in compliance  withss.ss.  10.01,  10.02, 10.03 and
10.04  of  the   Credit   Agreement   as  at  the  end  of  the   Year   [except
-----------------].

         2. No  "Default"  or "Event  of  Default"  (as  defined  in the  Credit
Agreement) occurred during the Year [except
----------------].

Dated:  _____________, 19___

                     PERFORMANCE TECHNOLOGIES, INCORPORATED

                      By:_________________________________
                      Name:_______________________________
                      Title:______________________________



<PAGE>




                                    EXHIBIT C

                        QUARTERLY COMPLIANCE CERTIFICATE


         This  Compliance  Certificate  is rendered to The Chase  Manhattan Bank
(the "Bank") by Performance Technologies, Incorporated (the "Borrower") pursuant
to ss.  8.06(b)(iii) of the Credit  Agreement  between the Bank and the Borrower
dated December ___, 1998 (the "Credit Agreement").

         The undersigned  hereby certifies that in respect of the fiscal quarter
ending _____________, 19___ (the "Quarter"):

         1.The Borrower was in compliance  withss.ss.  10.01,  10.02,  10.03 and
10.04  of  the  Credit   Agreement  as  at  the  end  of  the  Quarter   [except
------------].

         2. No  "Default"  or "Event  of  Default"  (as  defined  in the  Credit
Agreement) occurred during the Quarter [except
--------------].

Dated:  ______________, 19___
                     PERFORMANCE TECHNOLOGIES, INCORPORATED

                       By:________________________________
                       Name:______________________________
                       Title:_____________________________



<PAGE>



                                   SCHEDULE 1

                          SCHEDULE OF SUBSIDIARIES AND
                     INVESTMENTS IN SUBSIDIARIES (ss. 7.07)


PTI Virgin Island Corp. (Foreign Sales Corp.)

NO OTHER ACTIVE SUBSIDIARIES WITH ASSETS OR OPERATIONS

NO INVESTMENTS IN SUBSIDIARIES



<PAGE>



<TABLE>
                                   SCHEDULE 2
<CAPTION>

                EXISTING CREDIT ARRANGEMENTS AND LIENS (ss. 7.08)

<S>                  <C>                                       <C>               <C>      
-------------------- ----------------------------------------- ----------------- -----------
    Start Date                Collateral Description            Monthly Payment     Term
-------------------- ----------------------------------------- ----------------- -----------
--------------------------------------------------------------------------------------------
U.S. Bancorp Leasing and Financial
-------------------------------------------------------------------------------- -----------
-------------------- ----------------------------------------- ----------------- -----------
       1/96          Production and data processing/               $2,242.15      48 months
                     computer equipment
-------------------- ----------------------------------------- ----------------- -----------
--------------------------------------------------------------------------------------------
Chase Manhattan Bank
-------------------------------------------------------------------------------- -----------
-------------------- ----------------------------------------- ----------------- -----------
                     Line of  Credit:  machinery,  equipment,
                     fixtures  accounts,  inventory,  general
                     intangibles,     chattel    paper    and
                     insurance.

                     Electrovert Hydrocleaner
-------------------- ----------------------------------------- ----------------- -----------
--------------------------------------------------------------------------------------------
City of Rochester
--------------------------------------------------------------------------------------------
-------------------- ----------------------------------------- ----------------- -----------
                     $80,000  Loan  from  City  of  Rochester
                     secured by Chase  Manhattan  Bank Letter
                     of Credit
-------------------- ----------------------------------------- ----------------- -----------
</TABLE>


                                   GUARANTIES

                                      NONE


<PAGE>



                                   SCHEDULE 3

                   SCHEDULE OF HAZARDOUS MATERIALS (ss. 7.12)


                                      None



<PAGE>




                                   SCHEDULE 4

             SCHEDULE OF PARTNERSHIPS AND JOINT VENTURES (ss. 7.17)


                                      None


<PAGE>



                              SCHEDULE 5 (ss. 7.20)