Discharge lamp starting device and illumination apparatus

Details Discharge lamp starting device and illumination apparatus Discharge lamp starting device and illumination apparatus

2005-04-19

2005-04-19

Lee, Wilson (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S2090SC, C315S224000

Reexamination Certificate

active

06882118

ABSTRACT:
A discharge lamp driving circuit drives a discharge lamp using a high frequency wave, to start the lamp. A booster/chopper circuit has a switching element FET1, and boosts an input power supply voltage by switching the switching element. A boosting transformer supplies the discharge lamp with the voltage boosted by the booster/chopper circuit. A booster/driver circuit supplies the switching element FET1of the booster/chopper circuit with a driving signal having a frequency of 10 to 200 kHz, thereby limiting the peak loss of the switching element FET1to 200 W or less.

REFERENCES:
patent: 5055746 (1991-10-01), Hu et al.
patent: 5291100 (1994-03-01), Wood
patent: 5933340 (1999-08-01), Adamson
patent: 6008589 (1999-12-01), Deng et al.
patent: 6097158 (2000-08-01), Manor et al.
patent: 11204280 (1999-07-01), None
patent: 160497 (2001-06-01), None

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