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Power supply apparatus and method based on parasitic power extraction

  • US 20040256915A1
  • Filed: 06/17/2003
  • Published: 12/23/2004
  • Est. Priority Date: 06/17/2003
  • Status: Active Grant
First Claim
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1. Apparatus for supplying power to a load device comprising:

  • a power extractor that extracts voltage/current from a plurality of potentially time-varying signals and provides first and second voltage/current signals; and

    a power conversion circuit for converting said first and second voltage/current signals to a plurality of dc voltages that are provided to said load device.

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