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AC to DC solid state power supply using high frequency pulsed power switching

  • US 4,866,585 A
  • Filed: 06/08/1988
  • Issued: 09/12/1989
  • Est. Priority Date: 06/08/1988
  • Status: Expired due to Fees
First Claim
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1. An isolated full wave rectified power supply device for generating DC power from an AC power source comprising:

  • auxiliary power supply means to generate an auxiliary DC power source which provides an input sense signal and the input to a reference voltage means to generate a reference voltage signal;

    switching circuit means in circuit with the AC power source for switching on and off the AC power source and providing and output voltage;

    high frequency transformer means receiving the output voltage from the switching circuit means and providing an isolated transformer output voltage;

    output filter means for filtering the high frequency transformer output voltage to a DC output voltage;

    signal isolation means receiving the DC output voltage and generating an isolated output sense signal; and

    control circuit means utilizing the input sense signal and the output sense signal and modulating them with the reference voltage signal to generate positive pulse and negative pulse control signals to control the switching circuit means.

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