Triac dimmable compact fluorescent lamp with low power factor

Details Triac dimmable compact fluorescent lamp with low power factor Triac dimmable compact fluorescent lamp with low power factor

1997-04-10

2000-01-04

Philogene, Haissa

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Impedance or current regulator in the supply circuit

315247, 315307, 315244, 315DIG4, H05B 3702

Patent

active

06011357&

ABSTRACT:
A triac dimmable compact fluorescent lamp having a low power factor. A power feedback circuit coupled between the input and output stages of the lamp ballast creates sufficient current demand to sustain triac conduction at low dim levels. The power fed back from the output stage to the input stage, which includes a voltage doubler, reflects the voltage across the lamp.

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"A Method to Improve the Performance of Compact Fluorescent Lamps", A.W. Serres et al, Journal of the Illuminating Engineering Society, Summer 1993, pp. 40-48.

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