OPTICAL_SCHMITT_TRIGGER

Published:2009/6/24 22:44:00 Author:May | From:SeekIC

This circuit shows a 555 with its trigger and threshold inputs connected together used to energize a relay when the light level on a photoconductive cell falls below a preset value. Circuit can be used in other applications where a high input impedance and low output impedance are required with the minimum component count.



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