Arc welding instruction monitor

Details Arc welding instruction monitor Arc welding instruction monitor

1985-11-08

1987-06-30

Shaw, Clifford C.

Electric heating

Metal heating

By arc

219136, B23K 910

Patent

active

046772774

ABSTRACT:
A monitor designed to aid in the instruction of electric arc welding. The device is electrically isolated from the welder arc voltage by an optical coupling device which provides an isolated output signal linearly proportional to either arc voltage or arc current. Audio alarms are triggered when the arc voltage is either too high or too low indicating arc lengths that are too low indicating arc lengths that are too long or too short to provide acceptable weld quality. A self test switch is included to demonstrate the upper and lower voltage alarm operation.

REFERENCES:
patent: 2045801 (1936-06-01), Richter
patent: 3679865 (1972-07-01), Jesnitzer et al.
patent: 4288682 (1981-09-01), Toth
patent: 4375026 (1983-02-01), Kearney
patent: 4471207 (1984-09-01), Hawkes

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