Monitoring stud-welding-phototransistor responds to arc light

Details Monitoring stud-welding-phototransistor responds to arc light Monitoring stud-welding-phototransistor responds to arc light

1986-03-25

1987-06-09

Shaw, Clifford C.

Electric heating

Metal heating

By arc

219 98, 219 99, B23K 920

Patent

active

046721746

ABSTRACT:
Apparatus and method are provided for sensing the presence of arc discharge in arc welding such that the change in electric current is sensed at the time of discharge and light emitted from a welding position is sensed only when the sensed electric current surpasses a predetermined level.

REFERENCES:
patent: 4417120 (1983-11-01), Lumbra et al.

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