Fluorescent lamp circuit employing both a step-up chopper and an

Details Fluorescent lamp circuit employing both a step-up chopper and an Fluorescent lamp circuit employing both a step-up chopper and an

1996-04-01

1998-08-25

Pascal, Robert J.

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

With power factor control device

315307, 315219, H05B 3702

Patent

active

057986169

ABSTRACT:
A fluorescent lamp circuit having a power-factor improving step-up chopper and an inverter to covert an output of the step-up chopper and to drive the fluorescent lamp. A switching circuit of the step-up chopper and a switching circuit of the inverter are operated by a switching element consisting of a single transistor.

REFERENCES:
patent: 4277728 (1978-05-01), Stevens
patent: 5262699 (1991-08-01), Sun et al.
patent: 5408403 (1995-04-01), Nerone et al.
patent: 5574336 (1996-11-01), Konopka et al.

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