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Power converter using a resonant circuit

  • US 4,409,647 A
  • Filed: 03/12/1981
  • Issued: 10/11/1983
  • Est. Priority Date: 03/12/1981
  • Status: Expired due to Fees
First Claim
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1. A circuit for providing a direct current voltage, said circuit comprising;

  • A. circuit for rectifying input A C utility voltage to obtain a direct current voltage, andB. means for capacitive smoothing said direct current voltage, andC. charging inductance means for coupling said direct current voltage to a resonant circuitD. said resonant circuit including three capacitive elements, each of said elements connected at a common junction in a so called T connection and having a resonant frequency that will remain in a predetermined and narrow range despite wide variations in loadingE. switch means, consisting of an SCR, an antiparallel diode, and enabling pulse generator, said switch coupled with said charging inductor means and said resonant circuit means for enabling a circulating current representing energy received by means of said charging inductor means, andF. means, coupled with said resonant circuit means for converting said circulating current to said direct current voltage consisting of an output transformer, rectifier, and filter.

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