Electrical discharge machining fine finish circuit with symmetri

Details Electrical discharge machining fine finish circuit with symmetri Electrical discharge machining fine finish circuit with symmetri

1986-08-29

1988-11-22

Pellinen, A. D.

Electric heating

Metal heating

Cutting or disintegrating

219 69C, 363134, B23H 102

Patent

active

047867787

ABSTRACT:
An EDM machining circuit which is operable at negative polarity and at positive polarity. A push pull circuit is included to provide a symmetrical waveform with either polarity. Switching control of the main switching transistor is provided through a microprocessor.

REFERENCES:
patent: 3558998 (1971-01-01), Bertolasi
patent: 3654116 (1972-04-01), Inoue
patent: 3732392 (1973-05-01), Verner
patent: 3851134 (1974-11-01), Takarada
patent: 4071729 (1978-01-01), Bell, Jr.
patent: 4303957 (1981-12-01), Bell, Jr. et al.
patent: 4310741 (1982-01-01), Inoue
patent: 4347425 (1982-08-01), Obara
patent: 4361745 (1982-11-01), Rupert et al.
patent: 4654497 (1987-03-01), Obara
patent: 4678884 (1987-07-01), Obara et al.

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