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End-of-life bulb circuitry

  • US 9,107,273 B2
  • Filed: 09/08/2009
  • Issued: 08/11/2015
  • Est. Priority Date: 09/11/2008
  • Status: Expired due to Fees
First Claim
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1. An end-of-life LED light bulb comprising:

  • an LED light bulb;

    a microcontroller having a circuit configured to detect operational time of the bulb;

    wherein the microcontroller is configured to disable the bulb upon reaching a preset amount of operational time and wherein the circuit is configured to compare an output of the circuit with a reference value; and

    wherein the reference value is randomly adjusted at production time.

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