Electric welding machine

Details Electric welding machine Electric welding machine

1995-07-28

1997-04-08

Shaw, Clifford C.

Electric heating

Metal heating

By arc

B23K 910

Patent

active

056184557

ABSTRACT:
An electric welding machine consisting of a high-power resistor, a power transformer, and an inductor, wherein the high-power resistor is controlled to change the constant voltage of the power transformer so that the end voltage and end electric current of the electric welding machine provide a negative resistance characteristic for keeping the electric arc stable.

REFERENCES:
patent: 1146988 (1915-07-01), Arendt
patent: 1312039 (1919-08-01), Meilink
patent: 1550721 (1925-08-01), Von Henke
patent: 2036233 (1936-04-01), Pakala
patent: 2173450 (1939-09-01), Larsen et al.
patent: 2673915 (1954-03-01), Steinert et al.
patent: 4251710 (1981-02-01), Ortega-Aguirre et al.
patent: 4694140 (1987-09-01), Wheeler et al.

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