Industrial and mining field indicator light circuit

Published:2011/5/2 7:51:00 Author:Nicole | Keyword: industrial and mining field, indicator light | From:SeekIC

The indicator lights are fixed in the field that can help driver tojudge the situation behind car, to prevent accidents. Using phototransistor as singal sensor, when the light fell on photosensitive tube, relay J0 pulls in, a pair of often opening contacts are closed, then the green light is on, it means that there is no obstruction behind car. If there is obstruction to keep out light, then relay J0 dose not pull in, the red lights on.



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