Circuit system for driving high-intensity discharging lamp

Details Circuit system for driving high-intensity discharging lamp Circuit system for driving high-intensity discharging lamp

2011-03-08

2011-03-08

Owens, Douglas W (Department: 2821)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Impedance or current regulator in the supply circuit

C315S220000, C315S282000, C315S291000

Reexamination Certificate

active

07902765

ABSTRACT:
The invention provides a circuit system for driving a high-intensity discharging lamp, comprising a boosting circuit, an ignition coil circuit and a clamp circuit. The boosting circuit includes a first transformer and a first switch, in which the primary of the first transformer receives an input power, the secondary of the first transformer produces a boosting DC voltage, and the first switch is connected to the first transformer to control turning-on and turning-off of the first transformer. The ignition coil circuit is connected to the boosting circuit for converting the boosting DC voltage into a switching AC voltage to drive a load. The clamp circuit is connected to the boosting circuit and the ignition coil circuit for directing energy, reflected from the secondary of the first transformer to the primary of the first transformer, to the secondary of the first transformer as the first switch is turned off.

REFERENCES:
patent: 5422545 (1995-06-01), Felper et al.
patent: 5453665 (1995-09-01), Konopka
patent: 5654611 (1997-08-01), Yamamoto et al.
patent: 6784622 (2004-08-01), Newman et al.
patent: 7541791 (2009-06-01), Quazi
patent: 2002/0109468 (2002-08-01), Takeda et al.
patent: 2003/0102818 (2003-06-01), Shen
patent: 2005/0093477 (2005-05-01), Shi

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