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Power management circuit

  • US 20040189263A1
  • Filed: 02/25/2004
  • Published: 09/30/2004
  • Est. Priority Date: 02/28/2003
  • Status: Active Grant
First Claim
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1. A power management circuit for a system comprising:

  • a power supply from an inductively coupled circuit;

    a power supply from a battery, a voltage sensing circuitry for sensing the voltage of each said power supplies, a switching arrangement for selectively connecting one of said power supplies with at least one user, and control circuitry controlling said switching arrangement in response to an output of said voltage sensing circuitry.

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