Electrical discharge machining power circuit

Details Electrical discharge machining power circuit Electrical discharge machining power circuit

1975-12-29

1977-11-01

Reynolds, Bruce A.

Electric heating

Metal heating

Cutting or disintegrating

307270, 328 67, B23P 108

Patent

active

040567028

ABSTRACT:
A power supply circuit particularly useful in a multiple gap or a multiple electrode system in which multiple electrodes and a common workpiece or multiple electrodes and a like number of workpieces are selectively connected in circuit with a common DC source power supply circuit. A switching system is further provided for reversing the polarity of electrode relative to workpiece. A power supply circuit itself incorporates a specialized push-pull drive stage effective to drive the output stages in either polarity setting in such manner as to allow for negligible noise in the system. The drive system is one which generates triggering pulses effective to switch the output transistor bank in either polarity very rapidly and independently of the number of output leads which may be included.

REFERENCES:
patent: 3777102 (1973-12-01), Bell
patent: 3854026 (1974-12-01), Bell et al.
patent: 3916138 (1975-10-01), Pfau

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