Driver protection circuit for a push-pull type discharge lamp

Details Driver protection circuit for a push-pull type discharge lamp Driver protection circuit for a push-pull type discharge lamp

2007-09-18

2007-09-18

Dinh, Trinh (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S246000

Reexamination Certificate

active

11603134

ABSTRACT:
A driver protection circuit for a push-pull type discharge lamp comprises a discharge lamp with two input electrodes, a driver circuit having two transformer units and two driver units, and a protection mechanism. Two transformer units are respectively connected to the two input electrodes and provide an opposite-phase push-pull type driving power. The front ends of the transformer units are respectively connected to the driver units which are parallel connected to a power source. The combination of the driver unit, the transformer unit, and the input electrode is defined to be a high voltage output section. The protection mechanism has two protection units respectively assigned to the high voltage output sections and can receive an abnormal signal of the corresponding high voltage output section and synchronically transmits the abnormal signal to two driver units and makes the driver circuit simultaneously stop or pause outputting power to the two input electrodes.

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patent: 2002/0163315 (2002-11-01), Kaneko et al.
patent: 2004/0232853 (2004-11-01), Hur et al.
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patent: I242747 (2005-11-01), None

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