Multi-lamp driving circuit

Details Multi-lamp driving circuit Multi-lamp driving circuit

2009-04-01

2011-12-06

Tan, Vibol (Department: 2819)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Plural load device regulation

C315S277000, C315S282000, C315S312000, C315S291000

Reexamination Certificate

active

08072159

ABSTRACT:
A multi-lamp driving circuit for driving a plurality of lamps includes at least one power stage circuit, at least one transformer circuit, a balancing circuit, and a control circuit. The power stage circuit converts external electrical signals to alternating current (AC) signals. The transformer circuit is connected to the power stage circuit, to convert the AC signals to high voltage electrical signals capable of driving the lamps. The balancing circuit balances current flowing through the lamps, and includes a capacitor balancing circuit and a transformer balancing circuit. The control circuit is connected between the balancing circuit and the power stage circuit, to control output of the power stage circuit according to variation of the current flowing through the lamps.

REFERENCES:
patent: 6781325 (2004-08-01), Lee
patent: 7242147 (2007-07-01), Jin
patent: 7285921 (2007-10-01), Chen
patent: 7294971 (2007-11-01), Jin
patent: 7573205 (2009-08-01), Hosaka et al.
patent: 7671540 (2010-03-01), Lee et al.
patent: 7759877 (2010-07-01), Bai et al.
patent: 7872424 (2011-01-01), Sun et al.
patent: 7876055 (2011-01-01), Hosaka et al.
patent: 2005/0093471 (2005-05-01), Jin

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