Current balancing circuit for a multi-lamp system

Electric lamp and discharge devices: systems – Current and/or voltage regulation

Reexamination Certificate

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Details

C315S276000, C315S277000, C315S307000, C315S312000

Reexamination Certificate

active

07443112

ABSTRACT:
The present invention uses one or more transformers disposed between an inverter driver to drive a plurality of lamps. Each transformer has a first coil and a second coil magnetically coupled to each other. Each of the first and second coils has an input end and an output end. The input end of the first coil is operatively connected to the input end of the second coil for receiving an input current. Each of the first and second coils has a capacitor connected between the input and output ends. The output ends of the first and second coils are used to provide output current in two separate current paths. As such, the output end of a transformer can be separately connected to the input end of two lamps or two such transformers.

REFERENCES:
patent: 6420839 (2002-07-01), Chiang
patent: 6534934 (2003-03-01), Lin et al.
patent: 6717372 (2004-04-01), Lin et al.
patent: 6781325 (2004-08-01), Lee
patent: 7271549 (2007-09-01), Wey et al.
patent: 7282868 (2007-10-01), Ushijima et al.
patent: 7309964 (2007-12-01), Wey et al.
patent: 7345431 (2008-03-01), Lee
patent: 2002/0130628 (2002-09-01), Shin
patent: 2003/0141829 (2003-07-01), Yu et al.
patent: 2007/0152608 (2007-07-01), Lee

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