System and method for powering a load

  • US 7,382,636 B2
  • Filed: 10/14/2005
  • Issued: 06/03/2008
  • Est. Priority Date: 10/14/2005
  • Status: Active Grant
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First Claim
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1. A circuit for powering a remote device comprising:

  • an inverter operating at the operating frequency;

    a tank circuit including a capacitor and an inductor for transferring power to the remote device;

    a phase comparator for comparing the phase of the voltage supplied to the tank circuit with the phase of the voltage between the capacitor and the inductor of the tank circuit and generating a first phase comparison; and

    a disabling means for disabling the inverter as a function of the first phase comparison.

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