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Mechanisms for light management

  • US 9,526,151 B2
  • Filed: 05/05/2014
  • Issued: 12/20/2016
  • Est. Priority Date: 12/07/2009
  • Status: Active Grant
First Claim
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1. An apparatus for a light emitting diode light bulb, comprising:

  • a plurality of light emitting diodes connected to a base, the plurality of light emitting diodes providing illumination in the light emitting diode light bulb; and

    a module which detects a residual voltage of an electrical power source when a control for powering the light emitting diode light bulb is powered off, the residual voltage detected when a path to a hot wire is open from the electrical power source;

    wherein the module detects the residual voltage on a closed path with the light emitting diode light bulb that remains closed between a neutral wire and a ground wire, when the path to the hot wire is open from the electrical power source;

    wherein the module determines that a power outage occurred and switches to battery power from a battery in response to detecting no presence of the residual voltage of the electrical power source.

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