Passive power factor ballast circuit for the gas discharge lamps

Details Passive power factor ballast circuit for the gas discharge lamps Passive power factor ballast circuit for the gas discharge lamps

1994-03-04

1995-02-07

Pascal, Robert J.

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315251, 315272, 315275, 315187, 315245, 315238, 315352, H05B 3702

Patent

active

053878477

ABSTRACT:
A ballast for a gas discharge lamp circuit has a d-c output which contains three series-connected diodes connected across the output terminals, a pair of capacitors connected from different respective nodes of the diodes to respective ones of the output terminals, and a resistor connected between two of the diodes. The resistor increases the circuit power factor to greater than 0.95.

REFERENCES:
patent: 3390669 (1968-08-01), Hafton
patent: 3553528 (1968-09-01), Somlyody
patent: 4075476 (1978-02-01), Pitel
patent: 4127797 (1978-11-01), Perper
patent: 4928039 (1990-05-01), Nilssen
patent: 5258692 (1993-11-01), Jones
patent: 5315214 (1994-05-01), Lesea

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