Electric ARC welder with background current

Details Electric ARC welder with background current Electric ARC welder with background current

2006-09-19

2006-09-19

Shaw, Clifford C. (Department: 1725)

Electric heating

Metal heating

By arc

Reexamination Certificate

active

07109437

ABSTRACT:
An electric arc welder comprising a power source driven by a main input transformer with a secondary winding creating an output pulsating current across the electrode and workpiece of a welding operation is provided with a background current circuit including a full-wave rectifier with AC input and a rectified DC output connected in parallel with the power source across the welding operation wherein the full-wave rectifier is connected in parallel with the secondary winding.

REFERENCES:
patent: 3665149 (1972-05-01), Sakabe et al.
patent: 6384373 (2002-05-01), Schwartz
patent: 6388232 (2002-05-01), Samodell
patent: 6504738 (2003-01-01), Schwartz et al.

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