Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Transformer in the supply circuit
Patent
1997-07-23
1999-12-21
Kinkead, Arnold
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
Transformer in the supply circuit
315DIG5, 315219, 315205, 315312, 315248, 336 84R, H02M 322, H05B 4136, H05B 4100
Patent
active
060053550
ABSTRACT:
Electronic ballast system for fluorescent lights. A power oscillator connected to the primary winding of a power transformer for operation at a predetermined frequency in the range of 10 KHz to 5 MHz, and a ballasting network is connected to the secondary winding of the transformer and to one or more fluorescent lamps. The ballasting network is resonant at a frequency within about .+-.10 percent of the predetermined frequency, and in some embodiments, the resonant frequency of the ballasting network remains the same regardless of the number of lamps connected to it.
REFERENCES:
patent: 3963975 (1976-06-01), Gauper, Jr. et al.
patent: 4873471 (1989-10-01), Dean et al.
Kinkead Arnold
Siao Susan
Yeung Anne Chon My
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