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Lighting system with induction power supply

  • US 10,284,021 B2
  • Filed: 08/14/2018
  • Issued: 05/07/2019
  • Est. Priority Date: 08/14/2017
  • Status: Active Grant
First Claim
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1. A system for producing light comprising:

  • a sealed enclosure surrounding a porous graphite foam conductor;

    an oscillating circuit comprising a first inductor and a first capacitor, the first inductor having a first terminal and a second terminal, the oscillating circuit configured to generate an electromagnetic field, the porous graphite foam conductor when exposed to the electromagnetic field conducting an induced electric current, the induced electric current heating the porous graphite foam conductor to produce light;

    a drive circuit couplable to an AC power source and the oscillating circuit, the drive circuit configured to regulate an amount of light produced by the porous graphite foam conductor, the drive circuit comprising;

    a full wave rectifier couplable to the AC power source configured to convert AC power from the AC power source into DC power; and

    a MOSFET, the drain of the MOSFET being coupled to the second terminal, the source coupled to a ground and the gate being coupled to a gate drive circuit, the MOSFET being turned on when an integrated signal representative of a difference between a voltage proportional to the first terminal and a voltage proportional to the second terminal is between a first voltage threshold and a second voltage threshold and based on a timing signal.

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