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Electronic equipment theft deterrent system

  • US 5,767,771 A
  • Filed: 03/08/1996
  • Issued: 06/16/1998
  • Est. Priority Date: 03/08/1996
  • Status: Expired due to Fees
First Claim
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1. A theft deterrent system for disabling one or more components of electronic equipment in response to the unauthorized removal of the electronic equipment, the theft deterrent circuit comprising, in combination:

  • (a) an AC control module having an input connected to an AC source and an output connected to said electronic equipment;

    (b) a theft deterrent circuit comprised of;

    (i) an AC power relay to detect the presence or absence of AC power to said electronic equipment;

    (ii) an alarm circuit having a sensor to detect unauthorized removal of the electronic equipment;

    (iii) a DC source for supplying power to said alarm circuit, said DC source being enabled to supply power to said alarm circuit and place said alarm circuit in a stand-by mode once said AC power relay has detected the absence of AC power to said electronic equipment; and

    (iv) a disabling circuit having a high voltage output connected to one or more of said components in order to permanently disable the said components, when said sensor detects unauthorized removal of the electronic equipment;

    (c) a master control unit connected via AC power lines to said AC control module for activating and deactivating said AC control module and thereby activating and deactivating AC power to said electronic equipment.

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