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AC adapter with automatically optimized output voltage and power

  • US 5,847,543 A
  • Filed: 06/30/1997
  • Issued: 12/08/1998
  • Est. Priority Date: 06/30/1997
  • Status: Expired due to Term
First Claim
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1. A method for powering a portable electronic appliance and/or recharging a rechargeable battery, comprising the steps of:

  • (a.) if the appliance is drawing power;

    performing conversion of AC power to provide a DC power supply output at a first voltage level and at a first maximum power level; and

    (b.) if the appliance is not drawing power and if the battery is being recharged, performing conversion of AC power to provide said DC power supply output at a second voltage level which is different from said first voltage level and a second maximum power level which is different from said first maximum power level.

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