Optical coupling circuit for bistable output

Published:2011/9/26 1:41:00 Author:Rebekka | Keyword: bistable output , optical coupling circuit | From:SeekIC

Figure (a) shows the circuit of the control of bistable optical coupler output switch circuit, which is characterized by coupling the optical switch connected to the two emitter back on the road. It can effectively solve the isolate the problem between the output and load. Graph (b) shows the circuit for the optical coupling switch Schmitt circuit. When the input voltage U1 is low, the optical transistor C and e are in high resistance, BG1 will be conducted, BG2 stops, the output voltage U0 is low; when the amplitude of the input voltage U1 is greater than amplitude discrimination value, the optical transistor c and e are in low resistance, the BG1 stops, BG2 will be conducted, the output U0 is high voltage. You can change the level of amplitude discrimination by adjusting resistor R3.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/Optical_coupling_circuit_for_bistable_output.html

Print this Page | Comments | Reading(3)