Electric lamp and discharge devices: systems – Condenser in the supply circuit – Inductance in the condenser circuit
Patent
1989-12-12
1992-09-01
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Condenser in the supply circuit
Inductance in the condenser circuit
315199, 315174, 315176, 315DIG7, 315DIG2, H05B 3700, H05B 4114
Patent
active
051442051
ABSTRACT:
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-frequency 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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Jurell Scott R.
Motto Eric R.
Dinh Son
LaRoche Eugene R.
Lutron Electronics Co. Inc.
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