Corona power supply circuit

Details Corona power supply circuit Corona power supply circuit

1975-11-07

1976-10-12

Moose, Harry

321 2, 321 15, H01T 1900

Patent

active

039860850

ABSTRACT:
A portable power supply circuit for supplying a high voltage corona in a portable electrophotographic apparatus. An A.C. signal comprising a series of pulses is produced for a predetermined period of time. The pulses are shaped by a shaping circuit which draws current during only a portion of the operating cycle. These pulses are coupled through a step-up transformer to a multiplying circuit which multiplies the voltage at its input to the desired corona voltage. The power supply circuit includes a portable source of D.C. voltage such as a dry cell battery which supplies the necessary current and voltage. The power supply circuit is designed also to provide a number of D.C. bias voltages of polarity opposite to the corona voltage.

REFERENCES:
patent: 2965755 (1960-12-01), West
patent: 2985812 (1961-05-01), Peterson
patent: 3280368 (1966-10-01), Ahmed et al.
patent: 3287614 (1966-11-01), Sowiak
patent: 3355639 (1967-11-01), Semenhuk
patent: 3493840 (1970-02-01), Rosenberg
patent: 3567996 (1971-03-01), Gordon et al.
RCA Application note ICAN-6267 "Digital Integrated Circuits" Mar. 1971 pp. 353-360.

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