Driving circuit for powering light sources

Details Driving circuit for powering light sources Driving circuit for powering light sources

2011-04-05

2011-04-05

Vu, David Hung (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

C315S18500S, C315S192000

Reexamination Certificate

active

07919936

ABSTRACT:
There is provided a driving circuit for powering a plurality of light sources. The driving circuit includes a power converter, a plurality of switching regulators and a plurality of switching balance controllers. The power converter is operable for receiving an input voltage and for providing a regulated voltage to the light sources. The switching regulators are operable for adjusting forward voltages of the light sources respectively. The switching balance controllers are operable for generating pulse modulation signals to control the switching regulators respectively.

REFERENCES:
patent: 6724156 (2004-04-01), Fregoso
patent: 7402961 (2008-07-01), Bayat et al.
patent: 7710047 (2010-05-01), Shteynberg et al.
patent: 7777430 (2010-08-01), Catalano et al.

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