LED power supply device

Details LED power supply device LED power supply device

2006-11-14

2006-11-14

Le, Hoanganh (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

C315S307000, C315S291000, C315S2090SC

Reexamination Certificate

active

07135825

ABSTRACT:
An LED power supply device has a loop circuit formed by a switching circuit, an LED and a comparison circuit, and a reference voltage generation circuit for providing reference voltage to the comparison circuit. The loop circuit oscillates so that substantially constant current is applied to the LED.

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