Apparatus for generating and regulating welding currents

Details Apparatus for generating and regulating welding currents Apparatus for generating and regulating welding currents

1976-01-08

1977-09-13

Reynolds, Bruce A.

Electric heating

Metal heating

By arc

323 24, B23K 910

Patent

active

040484670

ABSTRACT:
Apparatus for generating and regulating welding currents, having primary and secondary circuits connected through a transformer, an anti-parallel connection of two thyristors in the primary circuit, a choke in parallel with this anti-parallel connection and means which shift the phase of the turn-on pulses in the case of a short-circuit on the secondary side and in switching on.

REFERENCES:
patent: 3284666 (1966-11-01), Hajicek
patent: 3295053 (1966-12-01), Perrins
patent: 3308340 (1967-03-01), Gille et al.
patent: 3323017 (1967-05-01), Powell et al.
patent: 3374420 (1968-03-01), Weber, Jr.
patent: 3641311 (1972-02-01), Hildebrandt et al.
patent: 3684942 (1972-08-01), Pettit, Jr. et al.
patent: 3849705 (1974-11-01), McElroy
patent: 3984654 (1976-10-01), Hoffman et al.

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