Input current limiting circuit and driving device using the...

Details Input current limiting circuit and driving device using the... Input current limiting circuit and driving device using the...

2006-10-27

2008-08-05

Tran, Thuy Vinh (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

C315S224000, C315S246000

Reexamination Certificate

active

07408309

ABSTRACT:
A driving device for driving a light source module (12) includes an input current limiting circuit (10) and an inverter (11). The input current limiting circuit includes an input current sensing circuit (100) and a feedback compensation circuit (103), for limiting current of an input power signal of the driving device to a predetermined range. The input current sensing circuit is used for sensing a current signal of the input power signal of the driving device. The feedback compensation circuit is connected to the input current sensing circuit, for outputting a compensation signal according to the sensed current signal. The inverter is connected between the input current limiting circuit and the light source module, and includes a feedback circuit (112). The feedback circuit is connected to the feedback compensation circuit, for receiving the compensation signal and feeding back current flowing through the light source module.

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