System for preventing oscillations in a fluorescent lamp ballast

Details System for preventing oscillations in a fluorescent lamp ballast System for preventing oscillations in a fluorescent lamp ballast

1997-09-26

2000-08-29

Wong, Don

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

315225, 315224, 315307, H05B 4100, H05B 4114

Patent

active

061113689

ABSTRACT:
A ballast adapted to power a fluorescent lamp as a function of a variable input signal, includes a power stage for providing power to a fluorescent lamp; a control circuit for controlling the power stage as a function of the variable input signal; a control circuit power supply for supplying control power to the control circuit; and a monitor and enabling circuit which permits the ballast to provide power to the lamp only when characteristics of the variable input signal meet predetermined criteria.

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