Arc voltage control circuit for welding apparatus

Details Arc voltage control circuit for welding apparatus Arc voltage control circuit for welding apparatus

1982-04-26

1984-04-03

Shaw, C. C.

Electric heating

Metal heating

By arc

B23K 910

Patent

active

044410093

ABSTRACT:
An improved control circuit is disclosed for controlling the arc voltage of welding apparatus. The circuit includes an automatic servo control circuit operative to gradually start the electrode positioning motor in the presence of an error signal indicating that the arc voltage is not at the desired level, to accelerate the motion of the positioning motor until the error signal is nulled and then quickly decelerate the motor to minimize electrode overshoots. The improved circuit is operative to prevent electrode servo "hunting" and results in improved welding operation. Other features and improvements are disclosed.

REFERENCES:
patent: 3777115 (1973-12-01), Kazlauskas et al.
patent: 3989921 (1976-11-01), Ohi et al.
patent: 3995208 (1976-11-01), Parr
patent: 4151394 (1979-04-01), Cecil

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