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Power and signal transfer interface circuit

  • US 4,942,510 A
  • Filed: 12/04/1989
  • Issued: 07/17/1990
  • Est. Priority Date: 12/04/1989
  • Status: Expired due to Term
First Claim
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1. An interface circuit for providing a power source to a functional circuit block from a coupled alternating excitation source and a return transmission path from said block to said source comprising:

  • a transistor,associated switch means, andenergy storage means,said transistor having a forward mode of operation, wherein it serves to rectify forwardly coupled excitation energy to thereby charge said energy storage means as said power source, anda reverse mode of operation wherein energy stored in said storage means is discharged to provide a back coupled pulse,said switch means being adapted to cooperate with said functional circuit block to controllably activate said reverse mode to provide said return transmission.

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