PHOTOELECTRIC_WELD_MONITOR

Published:2009/7/24 2:23:00 Author:Jessie | From:SeekIC

Shuts off r-f generator automatically after copper lows when welding exhaust tubulation to metal vacuum tube. Light is refected by molten copper into phototube that initiates shutdown, with 0.6 sec delay introduced intentionally to allow copper to low around entire seal.-J. Markus and V. Zeluff, Handbook of Industrial Electronic Control Circuits, McGraw-Hill, New York, 1956, p 344.



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