ELECTRONIC BALLAST FOR PARALLEL LAMP OPERATION WITH PROGRAM START

An electronic ballast for parallel lamp operation with program start including an electronic ballast for fluorescent lamps operably connected in parallel, each of the fluorescent lamps having lamp filaments. The electronic ballast includes a current fed self oscillating inverter (110) and preheat wi...

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Bibliographic Details
Main Author FANG YUHONG
Format Patent
LanguageEnglish
Published 10.01.2013
Subjects
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Summary:An electronic ballast for parallel lamp operation with program start including an electronic ballast for fluorescent lamps operably connected in parallel, each of the fluorescent lamps having lamp filaments. The electronic ballast includes a current fed self oscillating inverter (110) and preheat windings (127) operably connected to the current fed self oscillating inverter (110) to provide filament power (134) to the lamp filaments during the preheat time. The current fed self oscillating inverter (110) includes an output transformer (112) having a primary output transformer winding (114) and a secondary output transformer winding (116), the secondary output transformer winding (116) being operably connected to provide lamp power (132) to the fluorescent lamps; and a switch circuit (118) operably connected in series with the primary output transformer winding (114), the switch circuit (118) having a switch (120) operably connected in parallel with an inductor (124).
Bibliography:Application Number: US201113635694