Exhibit 10.3



                                 PROMISSORY NOTE AND
                                  SECURITY AGREEMENT

          $1,050,000.00                                   November 17, 1999


               FOR VALUE RECEIVED, AMERICAN ELECTROMEDICS CORP., a Delaware
          corporation ("Maker"), hereby promises to pay to the order of
          JUBILEE INVESTORS LLC, a Delaware limited liability company
          (hereinafter called "Payee"), the principal sum of ONE MILLION
          FIFTY THOUSAND DOLLARS ($1,050,000) (the "Principal Amount") in
          lawful money of the United States of America.

               The Principal Amount shall be payable in full on the earlier
          to occur of (i) within five business days of the closing date of
          the initial public offering of the Maker's German subsidiary,
          Rosch GmbH Medizintechnik ("Rosch"), out of proceeds raised in
          such financing or (ii) April 30, 2000 (the "Maturity Date").  If
          the average Closing Bid Price for the shares of common stock of
          the Maker exceeds $3.00 per share for the five (5) trading days
          prior to the Maturity Date, then the Principal Amount payable
          hereunder shall be reduced to $700,000.  The term "Closing Bid
          Price" means, for the Maker's common stock as of any date, the
          closing bid price on the principal securities exchange or trading
          market where the Maker's common stock is listed or traded as
          reported by Bloomberg, L.P. ("Bloomberg"), or, if applicable, the
          closing bid price of the Maker's common stock in the over-the-
          counter market on the electronic bulletin board for such security
          as reported by Bloomberg, or, if no closing bid price is reported
          for the Maker's common stock by Bloomberg, then the average of
          the bid prices of any market makers for such security as reported
          in the "pink sheets" by the National Quotation Bureau, Inc.  If
          the Closing Bid Price of the Maker's common stock cannot be
          calculated on such date on any of the foregoing bases, the
          Closing Bid Price of the Maker's common stock on such date shall
          be the fair market value as mutually determined by the Maker and
          Payee.  "Trading day" shall mean any day on which the Maker's
          common stock is traded for any period on the principal securities
          exchange or other securities market on which the common stock is
          then being traded.

               The following additional terms shall govern this Promissory
          Note and Security Agreement (this "Note"):

               1.   This Note is executed and delivered to Payee by Maker
          in exchange for 350 shares of Convertible Preferred Stock, Series
          A of the Maker held by Payee as more fully set forth in the
          Securities Exchange Agreement, dated November 17, 1999, between
          Maker and Payee (the "Securities Exchange Agreement").

               2.   This Note may be prepaid in part from time to time or
          in full at any time in cash without penalty.  All prepayments
          shall be applied to the reduction of principal.  The parties
          agree that imputed interest is included in the principal amount
          of this Note.

               3.   All cash distributions, license fees, royalties and
          other revenue or consideration received in respect of, or cash
          proceeds received on the sale or license of, the Collateral (as
          hereinafter defined) shall be applied, at the option of the
          Payee, to the prepayment of the entire unpaid Principal Amount of
          this Note and Maker shall deliver to Payee all such amounts
          promptly upon receipt thereof, provided, however, that for every
          $2 of the Principal Amount that is repaid pursuant to this
          section there shall be a reduction to the Principal Amount of an
          additional $ 1.

               4.   Principal shall be paid in lawful currency of the
          United States, in immediately available funds via wire transfer
          to an account designated by Payee, or at such other place or to
          such other person as Payee may designate in a written notice to
          Maker.

               5.   As security for the full, prompt and complete payment
          of all principal on this Note, Maker hereby pledges, assigns and
          grants to Payee a continuing first priority security interest
          valid throughout the world, except as expressly limited, in the
          intellectual property listed on Schedule A (the "Collateral").
          Until all amounts secured thereby shall have been repaid in full,
          the Maker shall execute such further documents and instruments
          and take such further steps as may be required by Payee to
          perfect and protect such security interest.  Maker shall bear any
          costs related to the perfection and protection of such security
          interest.

               6.   Each of the following shall constitute an "Event of
          Default" within the meaning of this Note:
          (a)  Maker shall fail or refuse to make payment in full of the
          Principal Amount due hereunder on the Maturity Date;

                    (b)  Maker or any subsidiary of Maker (as principal,
          guarantor or other surety) shall default in the payment when due
          of any debt or obligation when due or within any applicable
          period of grace of any amount of principal, premium or interest
          on a debt or obligation that is outstanding in a principal amount
          in the aggregate of at least $250,000;

                    (c)  Maker shall default in the performance of any
          material covenant in this Note or in the Securities Exchange
          Agreement or if any material representation or warranty made in
          this Note or in the Securities Exchange Agreement shall have
          proved to have been false or incorrect in any respect on the date
          as of which made or shall omit to state any material fact
          necessary to make the representation and warranty not misleading;
          provided that before any such event shall become an Event of
          Default, the Payee shall give written notice to the Maker and the
          Maker shall have ten (10) days from the receipt of such notice to
          cure any such event or condition; or

                    (d)  (i) Maker or any of its subsidiaries shall make a
          general assignment for the benefit of its creditors, (ii) entry
          of a final order adjudicating Maker or any of its subsidiaries
          bankrupt, (iii) the filing of a voluntary petition by Maker or
          any of its subsidiaries under any of the provisions of the United
          States bankruptcy code or similar laws of any jurisdiction, (iv)
          the filing of any answer or other pleading admitting the material
          allegations of any petition filed against Maker or any of its
          subsidiaries in any bankruptcy, insolvency or other such
          proceeding, (v) the filing of a petition against Maker or any of
          its subsidiaries under any of the provisions of any bankruptcy
          laws of the United States or similar laws of any jurisdiction and
          the failure of such petition to be dismissed within sixty (60)
          calendar days, (vi) the petition for, or the appointment of, or
          possession by, a custodian, receiver, liquidator, trustee or
          sequestrator (or other similar official) of Maker or any of its
          subsidiaries or any substantial part of its or any such
          subsidiary's properties or assets, (vii) Maker or any of its
          subsidiaries shall take any corporate action in furtherance of
          any of the foregoing, (viii) Maker or any of its subsidiaries
          shall be generally unable to pay its debts as they mature; or
          (ix) a final judgment shall be rendered against Maker or any of
          its subsidiaries for the payment of money at least $250,000 in
          the aggregate and such judgment shall not be discharged or
          execution thereon stayed pending appeal within 60 calendar days
          of entry of such judgment, or, in the event of such a stay, such
          judgment shall not be discharged within 60 calendar days after
          such stay expires.

               7.   Upon the occurrence and during the continuance of an
          Event of Default, the unpaid Principal Amount of this Note shall
          automatically, without any action on the part of Payee, become
          immediately due and payable, in each case without presentment,
          demand, protest or any notice of any kind, all of which are
          hereby waived.  Upon the occurrence of an Event of Default,
          Payee, in addition to any other rights it may have, shall have
          the right at any time and from time to time to sell, resell,
          assign, license, sublicense and deliver, in its discretion, all
          or any of the Collateral in one or more parcels at the same or
          different times, and all right, title and interest, claim and
          demand therein.  Payee may purchase all or any of the Collateral
          being sold.  Payee shall give Maker at least ten (10) calendar
          days' prior notice of the time and place of any public or private
          sale and of the time after which any private sale or other
          disposition is to be made, which notice Maker agrees is
          reasonable.  Payee may, without notice or publication, adjourn
          any public or private sale or cause the same to be adjourned from
          time to time by announcement at the time and place fixed for
          sale, and such sale may, without further notice, be made at the
          time and place to which the same was so adjourned.  Maker shall
          pay all reasonable out-of-pocket costs and expenses of every kind
          for sale or delivery, including reasonable attorneys' fees, and
          after deducting such costs and expenses from the proceeds of
          sale, Payee shall apply any remainder to the payment of the
          indebtedness or obligations of Maker under or in respect of this
          Note.  The balance, if any, remaining after payment in full of
          all of such expenses and indebtedness shall be paid to Maker,
          subject to any duty of Payee imposed by law to the holder of any
          subordinate security interest in the Collateral known to Payee.
          Payee, in addition to all other rights or remedies which it may
          have, shall have all of the rights and remedies of a secured
          party upon default under the Uniform Commercial Code of the State
          of New Hampshire and under any other applicable law.  Payee may
          exercise any or all of the rights which it may have in the
          Collateral in any order, from time to time, and shall not be
          obligated to exercise any of such rights.  No failure to exercise
          any right shall operate as a waiver and no waiver, consent or
          agreement given in any instance shall adversely affect the rights
          of Payee in any other instance.

               8.   Maker shall pay to Payee all costs and expenses
          incurred by Payee (including reasonable attorney's fees and
          expenses) in connection with the enforcement hereof.  The payment
          of all such amounts shall constitute additional indebtedness of
          Maker hereunder, and payment thereof shall be secured by the
          Collateral.

               9.   The remedies provided herein in favor of Payee shall
          not be deemed exclusive, but shall be cumulative, and shall be in
          addition to all other remedies in favor of Payee existing at law
          or in equity.  Payee shall have no duty as to the collection or
          protection of the Collateral or any income thereon or as to the
          preservation of any rights pertaining thereto, beyond the safe
          custody thereof of any securities representing such Collateral
          that are actually in its possession.

               10.  Upon payment in full of all indebtedness of Maker
          hereunder, Maker shall be entitled to the return of all of the
          Collateral which has not been used or applied as provided herein
          and Payee shall return this Note to Maker.

               11.  This Note shall be governed by the laws of the State of
          New York applicable to contracts made and to be performed
          entirely in such State , except to the extent that the laws of
          the State of New Hampshire shall govern the security interest
          created hereby, and any proceeding relating to this Note or any
          other indebtedness secured may be brought only in the federal or
          state courts sitting in New York, to the jurisdiction and venue
          of which the parties hereby submit.  The parties waive trial by
          jury in any such proceeding.  This Note may not be altered or
          amended, except by a writing duly signed by the party against
          whom such alteration or amendment is sought to be enforced.

               12.  Maker hereby waives presentment for payment, demand,
          notice of dishonor, notice of protest and protest and diligence
          in taking any action to collect amounts due hereunder.

                        [THIS SPACE INTENTIONALLY LEFT BLANK]



                    IN WITNESS WHEREOF, this Promissory Note and Security
          Agreement is executed by the parties as of the date first
          appearing above.
                                             AMERICAN ELECTROMEDICS CORP.


                                             By   /s/ Michael T. Pieniazek
                                                --------------------------
                                                  Name: Michael T. Pieniazek
                                                  Title: President


                                             EQUIDYNE SYSTEMS, INC.
                                             By   /s/ Michael T. Pieniazek
                                                --------------------------
                                                  Name: Michael T. Pieniazek
                                                  Time: Secretary


          ACKNOWLEDGED AND AGREED:
          ------------------------
          JUBILEE INVESTORS LLC

          By:  WEC ASSET MANAGEMENT LLC, Manager

          By   /s/ Daniel Saks
            ---------------------------------
               Name: Daniel Saks
               Time: Managing Director




                                      SCHEDULE A
                                      ----------
               The security interest granted herein shall extend to all
          intellectual property of the Maker and its subsidiaries,
          excluding Rosch GmbH Medizintechnik, but otherwise including
          without limitation the following:

          1.   PATENTS
               -------
               (a)  United States Patent No. 5,704,91 1, "Needleless
          Hypodermic Injection System" and any other related existing or
          future letters patent and applications for letters patent,
          including all patent applications in preparation for filing
          anywhere in the world owned by or assigned to the Maker or its
          subsidiaries throughout the world

               (b)  United States Patent No. 5,569,189, "Needleless
          Hypodermic Injector" and any other related existing or future
          letters patent and applications for letters patent, including all
          patent applications in preparation for filing anywhere in the
          world owned by or assigned to the Maker or its subsidiaries
          throughout the world.

               (c)  Any other existing or future letters patent and
          applications for letters patent, including all patent
          applications in preparation for filing anywhere in the world
          owned by or assigned to the Maker or its subsidiaries throughout
          the world.

               (d)  All patent licenses.

               (e)  All reissues, divisions, continuations, continuations-
          in-part, extensions, renewals, and reexaminations of any of the
          items described in items (c) and (d) above.

               (f)  All proceeds of, and rights associated with, the
          foregoing (including license royalties and proceeds of
          infringement suits), the right to sue third parties for past,
          present or future infringements of any patent or patent
          application, including any patent or patent application referred
          to above and for breach or enforcement of any patent license.

          II. TRADEMARKS, SERVICE MARKS AND TRADENAMES
              ----------------------------------------
               (a)  INJEX SYSTEM (unregistered trademark)
                    DYNACAM (unregistered trademark)

               (b)  All trademarks, trade names, corporate names, company
          names, business names, fictitious business names, trade styles,
          service marks or logos (collectively, "Trademarks") now existing
          anywhere in the world or hereafter adopted or acquired, whether
          currently in use or not, all registrations and recordings
          thereof, and all applications in connection therewith, whether
          pending or in preparation for filing, including registrations,
          recordings and applications in the United States Patent and
          Trademark Office or in any office or agency of the United States
          of America or any State thereof or any foreign country.

               (c)  All licenses of Trademarks to or by Maker or its
          subsidiaries.

               (d)  All reissues, extensions or renewals of any of the
          items described in clauses (b) or (c) above

               (e)  All goodwill of the business connected with the use of,
          and symbolized by the items described in, clauses (a), (b) and
          (c) above.

               (f)  All proceeds of, and rights associated with, the
          foregoing, including any claim by the Maker or its subsidiaries
          against third parties for past, present or future infringement or
          dilution of any Trademark, including for registrations and
          licenses in connection with any Trademark or for injury to the
          goodwill associated with the use of any such Trademark or for
          breach or enforcement of any Trademark license.

          III  COPYRIGHTS
               ----------

               All of the Maker's or the Maker's subsidiaries' right title
          and interest in and to the following: all copyrights, whether
          statutory or common law, registered or unregistered, now or
          hereafter in force throughout the world, including all of the
          Maker's or the Maker's subsidiaries' right, title and interest in
          any United States Copyrights registered in the United States
          Copyright Office or any other registered copyrights registered
          anywhere else in the world and including all applications for
          registration of, whether pending or in preparation, all copyright
          licenses, including all rights to sue for past, present and
          future infringements of any such license, all rights
          corresponding thereto throughout the world, all extensions and
          renewals of any thereof and all proceeds of the foregoing,
          including licenses, royalties, income, payments, claims, damages
          and proceeds of any suits related to the above.

          IV.  TRADE SECRETS
               -------------
               All of the Maker's or the Maker's subsidiaries' right, title
          and interest in and to the following: common law and statutory
          trade secrets and all other confidential or proprietary
          information and know-how, now or hereafter owned or licensed or
          used in or contemplated at any time for use in the business of
          the Maker or the Maker's subsidiaries (collectively, "Trade
          Secrets"), whether or not such Trade Secret has been reduced to a
          writing or other tangible form, including all documents and
          things embodying, incorporating, or referring in any way to such
          Trade Secret, all Trade Secret licenses, and the right to collect
          damages for the actual or threatened misappropriation of any
          Trade Secret and for the breach or enforcement of any such Trade
          Secret license.