OPTOCOUPLER_CIRCUITS

Published:2009/6/24 3:52:00 Author:Jessie | From:SeekIC

This circuit is a TTL-to-TTL isolator circuit. The driver circuit is an open-collector TTL inverter (U1). When the input is high, then the output of the inverter is low. Thus, when the input is high, the output of U1 grounds the cathode end of the LED and causes the LED to turn on.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Control_Circuit/OPTOCOUPLER_CIRCUITS.html

Print this Page | Comments | Reading(3)