System and method for power control in a LED luminaire

Details System and method for power control in a LED luminaire System and method for power control in a LED luminaire

2007-02-19

2010-02-09

Husar, Stephen F (Department: 2875)

Illumination

Plural light sources

With support

C362S294000, C362S800000, C315S291000, C315S294000

Reexamination Certificate

active

07658510

ABSTRACT:
The present invention is directed to an LED lighting source comprising a housing adapted for coupling to an AC power source; a rectifier circuit for converting the AC power to a DC supply; a power control circuit disposed in the housing and electrically connected to the DC supply; a string of LED's electrically connected between a control node of the power control circuit and the DC supply, the LEDs in the string being connected in series and being of a number selected to produce a voltage difference across the power control circuit sufficient to power active components of said power control circuit when powered from the DC supply and the power control circuit for limiting a forward current through the string to a nominal forward current of a single LED.

REFERENCES:
patent: 6600274 (2003-07-01), Hughes
patent: 6933707 (2005-08-01), Allen

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