Patent ID: 9246356
Filing Date: 2016-01-26
CPC Classification: A61L,H02J,H02M,H05B,Y02B,Y04S

Claim Text:
1. A contactless power supply for supplying power wirelessly to an electrically powered remote device comprising: a tank circuit having a primary for transferring power to the electrically powered remote device by an inductive coupling, said electrically powered remote device having a secondary in electrical communication with a load; drive circuitry configured to control application of power to said tank circuit, wherein operation of said drive circuitry varies based on a control signal applied to a control input of said drive circuitry; and a control system coupled to said drive circuitry, said control system configured to control said control signal to direct operation of said drive circuitry, said control system configured to vary power by selectively changing a phase delay of said control signal provided to said drive circuitry.