Welding power source

Details Welding power source Welding power source

1995-10-31

1997-07-22

Shaw, Clifford C.

Electric heating

Metal heating

By arc

21912434, 901 42, B23K 9095

Patent

active

056500793

ABSTRACT:
An arc welding system includes a welding power source unit for producing welding power for fusing welding wire to weld a workpiece. An internal resistor is incorporated in the welding power source unit. A relay is inserted between the internal resistor and the welding power source unit for switching a connection therebetween according to the operating condition of the arc welding system. The relay connects the internal resistor and the welding power source unit only while the arc welding system is performing a welding operation.

REFERENCES:
patent: 4249062 (1981-02-01), Hozumi et al.
patent: 4538047 (1985-08-01), Nakano et al.
patent: 5264677 (1993-11-01), Sato et al.

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