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Power supply apparatus and electronic equipment

  • US 6,809,498 B2
  • Filed: 05/16/2002
  • Issued: 10/26/2004
  • Est. Priority Date: 05/18/2001
  • Status: Expired due to Fees
First Claim
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1. A power supply apparatus comprising:

  • an electromagnetic energy conversion unit for collecting electromagnetic energy from a radio wave that propagates through air and converting the electromagnetic energy into AC power;

    a rectifier unit for rectifying the AC power into DC power;

    a voltage step-up circuit for stepping up a voltage of the DC power;

    a storage battery connected to be charged with the DC power and which discharges the charged DC power to a load; and

    a control unit for controlling the charging and discharging of the storage battery.

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