Tuned LRC ballasting circuit for compact fluorescent lighting

Details Tuned LRC ballasting circuit for compact fluorescent lighting Tuned LRC ballasting circuit for compact fluorescent lighting

1992-11-20

1994-10-25

Pascal, Robert J.

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Discharge device load

315 62, 315244, 315DIG5, 315DIG7, H01J 744

Patent

active

053592638

ABSTRACT:
The present invention offers improvement of performance and efficiency of a compact fluorescent lamp by means of a series tuned LRC ballasting circuit. The resonant voltage rise in the circuit is utilized to increase the cyclic crest voltage necessary for lamp ionization. After ionization occurs, lamp current and power are clamped and regulated by the lower Q factor of the tuned circuit. The LRC circuit provides a square wave of voltage across the lamp with considerable reduction in noise and RF ringing. Since it is a tuned circuit, it operates at approximately unity power factor, at lower temperature, and with a net equivalent impedance that provides for maximum illumination, lamp life and efficiency.

REFERENCES:
patent: 3710177 (1973-01-01), Ward
patent: 4270071 (1981-05-01), Morton
patent: 4608523 (1986-08-01), Nilsson
patent: 4996462 (1991-02-01), Krummel
patent: 5013977 (1991-05-01), Droho

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