Pulse frequency modulation for induction charge device

  • US 20060022636A1
  • Filed: 07/30/2004
  • Published: 02/02/2006
  • Est. Priority Date: 07/30/2004
  • Status: Active Grant
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First Claim
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1. A pulse frequency modulation for induction charge device being provided to charge a portable electronic device, wherein, said portable electronic device comprises a induction coil, which comprises:

  • an electric magnetic field generate and the secondary coil react circuit, could electric magnetic couple to said induction coil, for reacting the electromagnetic varying of said reaction;

    a detection and modulation generate circuit, coupled to said electric magnetic field generate and the secondary coil react circuit, for detecting the electromagnetic varying and outputting pulse singles with various frequencies according to said electromagnetic varying;

    a control switch circuit, coupled to said electric magnetic field generate and the secondary coil react circuit, for controlling switch on or off according to said pulse singles; and

    a power module, coupled to said control switch circuit, for providing power to said charged device;

    whereby, said detection and modulation generate circuit can generate pulse singles with various frequencies according to the load varying generated due to distance varying between said portable electronic device and said charged device, and charge to said portable electronic device according to said pulse singles so as to reach the goal of effective management the power.

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