Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Silicon controlled rectifier ignition
Patent
1991-12-30
1993-05-11
Mis, David
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Silicon controlled rectifier ignition
315210, 315226, 315DIG5, H05B 4129, H05B 4136
Patent
active
052104702
ABSTRACT:
An electronic ballast for use with fluorescent lamps including an inverter circuit for converting a direct current power source to a high voltage alternating current and starting means to inhibit operation of one of the inverter transistors until such time as fluorescent lamp is turned on. The circuitry taught eliminates substantial drain usually found at start up of inverter circuits due to the large capacitors usually found in such circuitry.
REFERENCES:
patent: 4667131 (1987-05-01), Nilssen
patent: 4893059 (1990-01-01), Nilssen
patent: 4939427 (1990-07-01), Nilssen
patent: 5013974 (1991-05-01), Nilssen
patent: 5015923 (1991-05-01), Nilssen
Appliance Control Technology, Inc.
Black Robert J.
Mis David
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