System and method for constant power LED driving and a redundancy dircuit thereof
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United States of America Patent
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Issued Date -
Mar 20, 2008
app pub date -
Nov 17, 2006
filing date -
Sep 18, 2006
priority date (Note) -
Abandoned
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Abstract
A constant power DC light emitting diode (LED) driving system and method is disclosed. The system comprises a plurality of LED, a DC voltage source for LED current generation, and a constant-voltage and constant-current regulator for constant luminance control. A method and a redundancy circuit thereof for LED current detouring and LED luminance maintenance are also disclosed.
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