Multi-lamps instant start electronic ballast

Details Multi-lamps instant start electronic ballast Multi-lamps instant start electronic ballast

2011-01-25

2011-01-25

Owens, Douglas W (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

C315S224000, C315S312000

Reexamination Certificate

active

07876060

ABSTRACT:
The electronic ballast comprises a series half bridge resonant inverter and a control circuit for the inverter with dimming capability. The inverter includes a first and a second voltage feedback circuits including first and a second charge pumps coupled in between inverter output and the dimming input of the control circuit. The feedback circuits generate a reference control signal to control operation after starting and an error control signals when the inverter output voltage exceeds a predetermined value.

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