Gas discharge lamp dimming system

Details Gas discharge lamp dimming system Gas discharge lamp dimming system

H - Electricity

05

B

315/29, 315/32,

H05B 41/38 (2006.01) H05B 41/392 (2006.01)

Patent

CA 2014374

ABSTRACT OF THE DISCLOSURE COMPACT FLUORESCENT LAMP DIMMING SYSTEM A dimming system provides power from a switch- controlled power source in series with a leakage auto- transformer to a compact fluorescent lamp. The system incorporates a high-freguency resonant converter that provides high voltages to strike and maintain an electric discharge in the lamp. The converter is loaded in parallel by the lamp, whose impedance damps the converter to stabilize lamp operation. An inductor, connected between the leakage auto-transformer and the resonant converter, isolates the switch-controlled power source from the high- frequency voltage. The system can be used with a variety of standard leakage reactance auto-transformers to provide full-range dimming of compact fluorescent lamps from 5 to 100 percent light output with minimal flicker.

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