Fast starting, surge limited, electronic ballast

Details Fast starting, surge limited, electronic ballast Fast starting, surge limited, electronic ballast

1999-09-13

2000-08-29

Philogene, Haissa

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

With power factor control device

315127, 315219, 315307, 315209R, 315DIG7, H05B 4116

Patent

active

061113654

ABSTRACT:
An electronic ballast includes a zener diode in series with the bulk capacitor of the ballast to provide a charging voltage for a small capacitor that powers a power factor correction circuit within the ballast. A SCR in parallel with the zener diode shuts off the zener diode after the power factor correction circuit begins operation.

REFERENCES:
patent: 5612609 (1997-03-01), Choi
patent: 5925990 (1999-07-01), Crouse et al.
patent: 5930130 (1999-07-01), Katyl et al.
patent: 5936357 (1999-08-01), Crouse et al.
patent: 5973455 (1999-10-01), Mirskiy et al.

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