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Device for regulating the intensity of the electric current in a receiver

  • US 5,404,287 A
  • Filed: 02/01/1993
  • Issued: 04/04/1995
  • Est. Priority Date: 02/14/1992
  • Status: Expired due to Fees
First Claim
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1. A device for regulating the intensity of an electric current in a receiver, comprising:

  • a primary circuit containing a first rectifier bridge connected across the terminals of a main power supply thereby defining a positive terminal and a negative terminal on said first rectifier bridge after rectification, said positive and negative terminals of said first rectifier bridge being connected in series to a high-speed on/off switch and a parallel resonant circuit, said resonant circuit including in parallel a first inductor and a first capacitor, said on/off switch being a semiconductor switch capable of being closed for a predetermined amount of time d, said time d being governed by a monostable circuit and a synchronizing circuit, said synchronizing circuit controlling the triggering of said monostable circuit upon detection of a threshold value, said time d further being dependant on a control circuit for receiving input data to set said predetermined amount of time d within a preselected range;

    a secondary circuit containing the receiver and a second inductor connected across the terminals of the receiver, said first and second inductors being proximate each other so that said secondary circuit is magnetically coupled to said primary circuit in the absence of any magnetic circuit.

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