Welding power supply arc starter

Details Welding power supply arc starter Welding power supply arc starter

1996-07-16

1998-02-03

Shaw, Clifford C.

Electric heating

Metal heating

By arc

219137PS, B23K 906

Patent

active

057147310

ABSTRACT:
A method and apparatus for arc welding, particularly starting an arc is disclosed. A welding power source that provides a welding current to an electrode and a workpiece includes a source of welding current having an inductor. The inductor and current source are connected to a pair of outputs, such as the output studs, and form a welding current path including the source of current, the output inductor, the outputs and the electrode and workpiece. A source of a high frequency voltage, such as a high frequency coupling coil is included in the welding current path. An arc starting circuit provides a controllable current path for current flow in the inductor prior to the application of high frequency voltage. The arc starting current path is not the welding current path.

REFERENCES:
patent: 2773170 (1956-12-01), Barthel
patent: 2784349 (1957-03-01), Anderson
patent: 3051829 (1962-08-01), Manz
patent: 3154721 (1964-10-01), Sommeria
patent: 3253119 (1966-05-01), Manz
patent: 3284609 (1966-11-01), Allen et al.
patent: 3299249 (1967-01-01), Sciaky
patent: 3751627 (1973-08-01), Prischi

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