Power supply circuit for spark erosion

Details Power supply circuit for spark erosion Power supply circuit for spark erosion

1985-05-10

1987-07-07

Pellinen, A. D.

Electric heating

Metal heating

Cutting or disintegrating

323272, B23H 102, G05F 144

Patent

active

046788859

ABSTRACT:
A circuit arrangement for producing machining pulses in a spark erosion installation from a direct current power source that functions without the use of ballast resistors. There are at least two controllable circuits which are parallel to the spark gap and to one another and whose output currents are additively superimposed for a total current flowing through the spark gap. The control inputs of the circuits are connected to a control circuit, which produces time-associated control signals, the nature of the time circuit cooperates with the control elements of the circuits, so that a current pulse is only allowed to pass to the spark gap if the switches controlled by the control elements are simultaneously open.

REFERENCES:
patent: 3052817 (1962-09-01), Branker
patent: 3517154 (1970-06-01), Scarpelli et al.
patent: 4163887 (1979-08-01), Buhler et al.
patent: 4277668 (1981-07-01), Inoue
patent: 4350863 (1982-09-01), Inoue
patent: 4357516 (1982-11-01), Inoue
patent: 4453069 (1984-06-01), Inoue
patent: 4516009 (1985-05-01), Inoue

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