Device for driving lamps

Details Device for driving lamps Device for driving lamps

2008-01-15

2008-01-15

Vo, Tuyet (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Transformer in the supply circuit

C315S274000, C315S291000, C315S307000, C315S312000

Reexamination Certificate

active

07319296

ABSTRACT:
A driving device for driving a plurality of lamps each including a first terminal and a second terminal, includes a power stage circuit (202), a transformer circuit (204) electrically connectable to the power stage circuit, and a current balancing circuit (206) to balance current of the lamps. The current balancing circuit includes a plurality of current balancing components each comprising two inputs and two outputs. The number of the current balancing components is defined as n, where n is an integer from 2 to n. The inputs of the first current balancing component are electrically connected to a terminal of the transformer circuit. The inputs of the nthcurrent balancing component are electrically connected to the outputs of the (n−1)thcurrent balancing component. The outputs of each current balancing component are respectively electrically connected to the first terminals of two of the lamps.

REFERENCES:
patent: 6172467 (2001-01-01), Vollkommer et al.
patent: 7173379 (2007-02-01), Ball
patent: 7250731 (2007-07-01), Jin

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