SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                     -------

                                  SCHEDULE 13G
                                 (Rule 13d-102)

             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
             TO RULES 13d-1(b) AND (c) AND AMENDMENTS THERETO FILED
                              PURSUANT TO 13d-2(b)
                              (Amendment No. 7)(1)


                              MICROSEMI CORPORATION
                                (Name of Issuer)


                          COMMON STOCK, $.20 PAR VALUE
                         (Title of Class of Securities)


                                    595137100
                                 (CUSIP Number)


                                October 10, 2001
             (Date of Event Which Requires Filing of this Statement)


Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

         [_] Rule 13d-1(b)

         [X] Rule 13d-1(c)

         [_] Rule 13d-1(d)


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(1) The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).


                                Page 1 of 5 Pages



---------------------------                         ----------------------------
CUSIP No. 595137100                   13G                  Page  2  of  6  Pages
---------------------------                         ----------------------------

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1          NAME OF REPORTING PERSON
           SS. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
           NORMAN J. WECHSLER
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2          CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a)[_]
                                                                         (b)[_]
--------------------------------------------------------------------------------
3          SEC USE ONLY


--------------------------------------------------------------------------------
4          CITIZENSHIP OR PLACE OF ORGANIZATION

           United States
--------------------------------------------------------------------------------
      NUMBER OF SHARES      5      SOLE VOTING POWER
        BENEFICIALLY               1,391,760
          OWNED BY          ----------------------------------------------------
            EACH            6      SHARED VOTING POWER
           PERSON                  0
         REPORTING          ----------------------------------------------------
            WITH            7      SOLE DISPOSITIVE POWER
                                   1,391,760
                            ----------------------------------------------------
                            8      SHARED DISPOSITIVE POWER
                                   0
--------------------------------------------------------------------------------
9          AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           1,391,760
--------------------------------------------------------------------------------
10         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


--------------------------------------------------------------------------------
11         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

           4.9%
--------------------------------------------------------------------------------
12         TYPE OF REPORTING PERSON

           IN
--------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!


                                Page 2 of 5 Pages



                                  SCHEDULE 13G

Item 1(a). Name of Issuer:

                   MICROSEMI CORPORATION

Item 1(b). Address of Issuer's Principal Executive Offices:

                   2381 Morse Avenue
                   Irvine, CA  92614

Item 2(a). Name of Person Filing:

                   This Schedule 13G is filed on behalf of
                   Norman J. Wechsler (the
                   "Reporting Person").

Item 2(b). Address of Principal Business Office or, If None, Residence:

                   Suite 310
                   105 South Bedford Road,
                   Mount Kisco, New York  10549

Item 2(c). Citizenship:

                   The Reporting Person is a United States citizen.

Item 2(d). Title of Class of Securities:

                   Common Stock, par value $.20 per share.

Item 2(e). CUSIP Number:

                   595137100

Item 3. Type of Reporting Person:

                   Not applicable


                                Page 3 of 5 Pages




Item 4.    Ownership:


          (a)  Amount Beneficially Owned:

               As of October 10 2001, the Reporting Person beneficially owned
               1,391,760 shares of Common Stock, which amount includes (i)
               1,122,120 shares of Common Stock owned by Wechsler & Co., Inc., a
               broker/dealer registered under Section 15 of the Act, of which
               Norman J. Wechsler is the sole shareholder, Chairman of the Board
               and President; and (ii) 8,140 shares of Common Stock beneficially
               owned by the Wechsler & Co., Inc. Profit Sharing Trust (the
               "Profit Sharing Trust"), over which the Reporting Person
               previously had shared voting and dispositive power.

               The Reporting Person expressly disclaims beneficial ownership of
               2,000 shares of Common Stock owned by a trust for the benefit of
               Mr. Wechsler's minor son, David J. Wechsler, of which Norman J.
               Wechsler and his spouse, Sharon C. Wechsler, are co-trustees.

          (b)  Percentage of Class:

               4.9% beneficially owned by the Reporting Person

          (c)  Number of Shares as to Which Such Person Has:

               (i)   sole power to vote or direct the vote:

                        1,391,760 shares of Common Stock.

               (ii)  shared power to vote or direct the vote:

                        -0-

               (iii) sole power to dispose or direct the disposition of:

                        1,391,760 shares of Common Stock.


                                Page 4 of 5 Pages



               (iv)  shared power to dispose or direct the disposition of:

                        -0-

Item 5      This statement is being filed to report the fact that as of the date
            hereof the Reporting Person has ceased to be the beneficial owners
            of more than five percent of the Common Stock.

Items 6-9.  Not applicable.

Item 10.    Certification:

     By signing below, the Reporting Person certifies that, to the best of his
knowledge and belief, the securities referred to above were acquired in the
ordinary course of business and were not acquired for the purpose and do not
have the effect of changing or influencing the control of the Issuer of such
securities, and were not acquired in connection with or as a participant in any
transaction having such purpose or effect.

                                        SIGNATURE

     After reasonable inquiry and to the best of the undersigned's knowledge and
belief, the undersigned certifies that the information set forth in this
statement is true, complete and correct.

Date: March 07, 2002

                                                  /s/ Norman J. Wechsler
                                                  ------------------------------
                                                  Norman J. Wechsler


                               Page 5 of 5 Pages