Low frequency output electronic ballast

Details Low frequency output electronic ballast Low frequency output electronic ballast

2005-04-12

2005-04-12

Vo, Tuyet Thi (Department: 2821)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Transistorized ignition systems

C315S224000, C315S246000, C315S291000

Reexamination Certificate

active

06879113

ABSTRACT:
A ballast for an arc discharge lamp load switches high voltage DC at a high frequency based on a low frequency control signal. The switched high voltage is then filtered to remove effects of the high frequency switching. Switching may be accomplished with a high voltage, AC voltage controlled current source generating a high frequency, high voltage substantially rectangular signal at a source output by switching the high voltage DC signal with the low frequency time varying reference signal.

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