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Wirelessly powered devices

  • US 9,601,268 B2
  • Filed: 11/25/2013
  • Issued: 03/21/2017
  • Est. Priority Date: 11/26/2012
  • Status: Expired due to Fees
First Claim
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1. A circuit for delivering power to a load and from a wireless power supply, comprising:

  • an inductor coil configured to couple to an electromagnetic field of another inductor coil of the wireless power supply;

    a rectifier configured to rectify power from the inductor coil of the circuit a switchable capacitor bank configured to store the rectified power in capacitors switchable at least between a series and a parallel configuration;

    a voltage detecting device including circuitry configured to measure voltages or detect predetermined voltages, across the capacitor bank;

    a switch controller including circuitry configured to control the capacitor bank switching in dependence on the measured or detected voltages; and

    a voltage regulator configured to supply the load with a constant voltage power supply derived from the voltages across the capacitor bank.

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