Electronic ballasts

Details Electronic ballasts Electronic ballasts

1994-02-07

1995-06-20

Mottola, Steven

Electric lamp and discharge devices: systems

Discharge device and/or rectifier in the supply circuit

Flashers

315227R, H05B 4114

Patent

active

054263441

ABSTRACT:
A ballast circuit for fluorescent lamp which comprises an additional D2 located just after the rectifier bridge D1 and before smoothing capacitors C5, C6. The diode D2 is matched to the value of a mylar capacitor C3 connected across the output of the rectifier bridge and the fluorescent lamp load whereby the fluorescent lamp draws current over substantially the whole of the supply voltage waveform to thereby improve the power factor and reduce the current harmonic distortion.

REFERENCES:
patent: 4959591 (1990-09-01), Hirschmann

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