Superimposed high striking voltage power supply circuit for elec

Details Superimposed high striking voltage power supply circuit for elec Superimposed high striking voltage power supply circuit for elec

1981-10-26

1984-04-17

Reynolds, B. A.

Electric heating

Metal heating

Cutting or disintegrating

219 69P, B23P 102

Patent

active

044436823

ABSTRACT:
A circuit for electrical discharge machining including two MOSFETS. The first MOSFET (28) has its power conducting terminals connected between the gap (20,22) and DC power supply (30). Its gate is connected to a source of variable amplitude signals (14). The second MOSFET has its power conducting terminals connected between the gap (20,22) and a voltage DC power supply (40). It has its gate connected to a source of spike signals (18). A multivibrator (10) conjointly operates both sources (14 and 18).

REFERENCES:
patent: 3229159 (1966-01-01), Webb
patent: 3365612 (1968-01-01), Schierholt
patent: 3390246 (1968-06-01), Webb
patent: 3668361 (1972-06-01), O'Connor
patent: 3809848 (1974-05-01), Bell, Jr.
patent: 3864541 (1975-02-01), Inoue
patent: 3988560 (1976-10-01), Losey et al.
patent: 4347425 (1982-08-01), Obara

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