Washington, D.C. 20549


                                    FORM 8-K

                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934


         Date of Report (Date of earliest event reported): July 20, 2004

                                VICOR CORPORATION
               (Exact name of Registrant as specified in charter)

         Delaware                      0-18277                   04-2742817
-----------------------------  --------------------------   --------------------
(State or other jurisdiction    (Commission file number)       (IRS employer
     of incorporation)                                       identification no.)

                 25 Frontage Road, Andover, Massachusetts 01810
               (Address of principal executive offices) (Zip Code)

                                 (978) 470-2900
              (Registrant's telephone number, including area code)

              (Former name, former address and former fiscal year,
                         if changed since last report)

Item 7. Exhibits.

(c)  Exhibits. The following exhibit is being furnished herewith:

Number            Title
-------           -----

99.1              Vicor Corporation's press release dated July 20, 2004.

Item 12. Results of Operations and Financial Condition.

On July 20, 2004, Vicor Corporation issued a press release announcing its
financial results for the second quarter of 2004. The full text of that press
release is attached as Exhibit 99.1 hereto and incorporated by reference herein.
The information furnished under this Item 12, including the Exhibit attached
hereto, shall not be deemed "filed" for any purpose, including for purposes of
Section 18 of the Securities and Exchange Act of 1934 (the "Exchange Act") or
otherwise subject to the liabilities of that section, nor shall it be deemed
incorporated by reference in any filing under the Securities Act of 1933 or the
Exchange Act, regardless of any general incorporation language in such filing.

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     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                                          VICOR CORPORATION

Dated: July 20, 2004                              By: /s/ Mark A. Glazer
                                                  Name:  Mark A. Glazer
                                                  Title: Chief Financial Officer


                                  EXHIBIT INDEX

Number       Title
------       -----

99.1         Vicor Corporation's press release dated July 20, 2004.