CONVEYOR_LINE_JAM_DETECTOR

Published:2009/7/20 11:44:00 Author:Jessie | From:SeekIC

Interruption of light beam to light-activated scr for more than few millisec fires SCR1, opening relay. Momentary interruptions by objects moving normally on conveyor have no effect. Circuit resets automatically when light is restored.-E. K. Howell, Light-Activated Switch Expands Uses of Silicon-Controlled Rectifiers, Electronics, 37:15, p 53-61.



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