Adaptive inductive power supply

  • US 7,212,414 B2
  • Filed: 10/20/2003
  • Issued: 05/01/2007
  • Est. Priority Date: 06/21/1999
  • Status: Active Grant
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First Claim
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1. A contactless power supply for inductively powering a device comprising:

  • a tank circuit;

    a sensor for sensing operating parameters of the tank circuit;

    and a controller coupled to the sensor for configuring the tank circuit in response to the sensor, where the tank circuit includes a variable capacitor and the controller is coupled to the variable capacitor for adjusting the capacitance of the variable capacitor, where the tank circuit includes a variable inductor and the controller is coupled to the variable inductor for adjusting the inductance of the variable inductor, and where the tank circuit includes a primary winding.

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