Multi-lamp driving circuit

Details Multi-lamp driving circuit Multi-lamp driving circuit

2007-09-11

2007-09-11

Chen, Shih-Chao (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S224000

Reexamination Certificate

active

11546406

ABSTRACT:
A multi-lamp driving circuit includes a transformer, a first lamp, a second lamp, a current/voltage converting circuit and a voltage/current converting circuit. Transformer includes a secondary coil having a first output terminal and a second output terminal. Each of the first lamp and the second lamp has one end coupled to the first output terminal. The current/voltage converting circuit is for outputting a voltage according to a first current of the first lamp. The voltage/current converting circuit is for correspondingly generating a second current according to the voltage, wherein the second current is substantially equal to current of the second lamp.

REFERENCES:
patent: 6420839 (2002-07-01), Chiang et al.
patent: 6534934 (2003-03-01), Lin et al.
patent: 6680588 (2004-01-01), Park et al.
patent: 6922023 (2005-07-01), Hsu et al.

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