Discharge lamp control circuit with feedback loop to lower harmo

Details Discharge lamp control circuit with feedback loop to lower harmo Discharge lamp control circuit with feedback loop to lower harmo

1996-11-12

1998-05-26

Pascal, Hubert

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

With power factor control device

315307, 315244, 315209R, 315DIG7, H05B 4116

Patent

active

057571430

ABSTRACT:
A circuit arrangement for operating a discharge lamp with a high frequency current comprising input terminals for connection to a source of low frequency supply voltage, a rectifier bridge coupled to the input terminals for rectifying the low frequency supply voltage, and an inverter shunting a first capacitor for generating the high frequency current. The circuit arrangement incorporates two power feedback loops to feed power back to an output terminal of the rectifier bridge. As a result the circuit arrangement has a relatively simple configuration, causes only a very limited amount of harmonic distortion and can be realized with relatively cheap and simple components.

REFERENCES:
patent: 4808887 (1989-02-01), Fahnrich et al.
patent: 4949013 (1990-08-01), Zuchtriegel
patent: 5008597 (1991-04-01), Zuchtriegel
patent: 5404082 (1995-04-01), Hernandez et al.
patent: 5521467 (1996-05-01), Statnic et al.

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