Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Patent
1997-12-19
1999-07-20
Philogene, Haissa
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Automatic regulation
315308, 315291, 315127, 315224, 315DIG7, G05F 100
Patent
active
059259906
ABSTRACT:
An electronic ballast includes an AC to DC converter for power factor correction, a bulk capacitor for storing energy from the converter, and a microprocessor controlled, half-bridge inverter including a series resonant, direct coupled output. Input ports of the microprocessor are coupled to several locations within the ballast to monitor the operation of the ballast or the operation of a gas discharge lamp coupled to the ballast. An analog voltage limiter overrides the microprocessor to limit output voltage under fault conditions. A storage capacitor, connected in series with the bulk capacitor, stores energy at low voltage for powering the microprocessor. The microprocessor is programmed to provide lamp protection features, lumen maintenance, and a warm-up period for a lamp. The microprocessor is also programmed to meet the operating requirements of world markets and of different lamp types.
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Bandel Michael W.
Bezdon Ronald J.
Boykov Boyko
Crouse Kent E.
Keegan Patrick J.
Energy Savings, Inc.
Philogene Haissa
Wille Paul F.
LandOfFree
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