Patent ID: 9673634
Date: 2017-06-06
CPC Classifications: H02J

Claim:
1. A wireless power supply for supplying power to a remote device, said wireless power supply comprising: a rectifier capable of accepting a first input voltage or a second input voltage, wherein said rectifier produces a rectified output from an AC source; a sensor for detecting which of said first input voltage and said second input voltage is connected to said wireless power supply; a plurality of switching circuits each coupled to said rectified output without being converted by a DC/DC converter; a first tank circuit including a first capacitor and first inductor, said first tank circuit coupled to one of said plurality of switching circuits, wherein characteristics of said first tank circuit are selected for transferring power to a remote device as a function of said first input voltage; a second tank circuit including a second capacitor and second inductor, said second tank circuit coupled to a different of said plurality of switching circuits, wherein characteristics of said second tank circuit are selected for transferring power to said remote device as a function of said second input voltage, wherein said characteristics of said second tank circuit are different from said characteristics of said first tank circuit; a microcontroller programmed to control inductive power transfer to said remote device from a first or second tank circuit based on feedback from said remote device, wherein said microcontroller is programmed to control said plurality of switching circuits based on output from said sensor.