PHOTOELECTRIC_LATCHING_RELAY

Published:2009/7/15 22:53:00 Author:Jessie | From:SeekIC

Photo-sensitive let serves as relay in light-activated smoke detectors, end-of-tape sensing in tape recorders, and light-activated alarms.-B. R. Smith, tight-Activated latching Relay, EEE, 14;8, p 167.



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