High efficiency ballast system for gaseous discharge lamps

Details High efficiency ballast system for gaseous discharge lamps High efficiency ballast system for gaseous discharge lamps

H - Electricity

05

B

315/62

H05B 41/24 (2006.01)

Patent

CA 1129484

LD 7706 ABSTRACT OF THE DISCLOSURE An electrical lamp ballast system of improved efficiency is provided for starting and operating fluorescent lamps. The system includes a high leakage reactance autotransformer having primary and secondary windings, and a ballast capacitor connected in series with the secondary winding and two serially-connected fluorescent lamps of low starting and operating voltage. The secondary circuit is connected to a tap on the primary winding for reducing the ratio of ballast power input to lamp light output. The system provides reduced lamp current crest factor, thereby improving life and operating characteristics of the lamps.

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