Power-supply device for working machine such as a spark-erosion

Details Power-supply device for working machine such as a spark-erosion Power-supply device for working machine such as a spark-erosion

1976-11-03

1978-08-08

Shoop, William M.

Electric power conversion systems

Current conversion

Having plural converters for single conversion

21913032, 363128, H02M 708, H02M 7155

Patent

active

041060873

ABSTRACT:
A power-supply device for a working machine such as a spark-erosion machine, arc welding machine or the like substantially eliminates the break-down or misoperation of thyristers used in the device and wherein the device includes a circuit which comprises a power transformer, a thyrister rectifying circuit, a diode rectifying circuit, and a trigger circuit for triggering the thyrister of the thyrister rectifying circuit.

REFERENCES:
patent: 2763771 (1956-09-01), Bichsel
patent: 2777973 (1957-01-01), Steele et al.
patent: 3339107 (1967-08-01), Aldenhoff
patent: 3346799 (1967-10-01), Aldenhoff
patent: 3356928 (1967-12-01), Parrish
patent: 3528100 (1970-09-01), Budy
patent: 3777113 (1973-12-01), Arikawa et al.
patent: 3824441 (1974-07-01), Heyman et al.
patent: 4009431 (1977-02-01), Johnson

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