Discharge lamp lighting apparatus

Details Discharge lamp lighting apparatus Discharge lamp lighting apparatus

2008-04-15

2008-04-15

Tran, Thuy V. (Department: 2821)

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Transformer in the condenser load device circuit

C315S291000, C315S119000, C315S312000

Reexamination Certificate

active

11591614

ABSTRACT:
A discharge lamp lighting apparatus includes a transformer defining primary and secondary sides; a transformer driving circuit to drive the primary side of the transformer thereby lighting a discharge lamp connected at the secondary side of the transformer; a control circuit to control the transformer driving circuit; a high voltage capacitor formed of a pattern capacitor and disposed between one terminal of the secondary side of the transformer and the discharge lamp; and a discharge detecting pattern disposed close to the high voltage capacitor. In the discharge lamp lighting apparatus, a voltage induced in the discharge detecting pattern is duly detected, and power supply to the secondary side of the transformer is stopped.

REFERENCES:
patent: 6114814 (2000-09-01), Shannon et al.
patent: 6570344 (2003-05-01), Lin
patent: 6774580 (2004-08-01), Suzuki et al.
patent: 6919693 (2005-07-01), Fushimi
patent: 2005/0128377 (2005-06-01), Park et al.
patent: A 2005-183099 (2005-07-01), None

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