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Warm dim circuit for use with LED lighting fixtures

  • US 10,244,599 B1
  • Filed: 11/10/2017
  • Issued: 03/26/2019
  • Est. Priority Date: 11/10/2016
  • Status: Active Grant
First Claim
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1. A warm dim LED circuit, comprising:

  • a. at least first and second pluralities of LEDs all electrically connected in series between a voltage source and a constant current source;

    b. a dimmable LED segment controller configured to illuminate and independently dim the first plurality of LEDs; and

    c. a control unit coupled to the dimmable LED segment controller and programmed to dim the first plurality of LEDs relative to the second plurality of LEDs; and

    d. wherein the dimmable LED segment controller comprises a first differential current circuit connected in parallel with the first plurality of LEDs to dim the first plurality of LEDs by diverting current from the first plurality of LEDs in response to a first control signal from the control unit.

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