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Portable electronic device and method for supplying current to different loads

  • US 5,701,597 A
  • Filed: 05/09/1995
  • Issued: 12/23/1997
  • Est. Priority Date: 05/12/1994
  • Status: Expired due to Term
First Claim
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1. A portable electronic device comprising:

  • a first load;

    a second load;

    a first battery;

    a second battery;

    a first power line coupled to said first load;

    a second power line coupled to said second load;

    a first switch for coupling said first battery to said first power line responsive to states of discharge of said first battery and said second battery;

    a second switch for coupling said second battery to said second power line responsive to said states of discharge of said first battery and said second battery;

    a third switch for coupling said first power line to said second power line responsive to said states of discharge of said first battery and said second battery;

    wherein said second load comprises a controller for controlling said first switch, said second switch, and said third switch responsive to states of discharge of said first battery and said second battery.

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