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LED light with power switch controlled color temperature

  • US 9,788,373 B1
  • Filed: 07/03/2016
  • Issued: 10/10/2017
  • Est. Priority Date: 07/03/2016
  • Status: Expired due to Fees
First Claim
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1. An LED light with power switch controlled color temperature, comprising:

  • a line voltage source;

    a line voltage switch having as an input said line voltage source and having as an output a switched line voltage, said line voltage switch configured in a first mode to transmit said line voltage source to said switched line voltage output and in a second mode to completely interrupt transmission of said line voltage from said line voltage source to said switched line voltage output;

    at least two LED light sources;

    an LED driver having as an input said switched line voltage and having as an output a regulated LED power supply suitable to drive said at least two LED light sources, said LED driver configured to convert said switched line voltage to said regulated LED power supply output;

    a feedback circuit having as an input said regulated LED power supply and as an output a time averaged representation of said regulated LED power supply;

    a monitor having as an input said time averaged representation of said regulated LED power supply and having as an output a mode signal indicating whether said line voltage switch is operating in said first mode or said second mode;

    a logic circuit having as an input said mode signal and configured to detect when said mode signal indicates said line voltage switch is operating in said second mode for a time sufficient to be indicative of a demand to switch a Correlated Color Temperature light output from said at least two LED light sources and having as an output a Correlated Color Temperature control signal that changes in value responsive to a detection of said demand to switch said Correlated Color Temperature light output; and

    a regulator circuit having as an input said Correlated Color Temperature control signal and configured to selectively control a Correlated Color Temperature of said at least two LED light sources responsive to said Correlated Color Temperature control signal.

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