Photoelectric Control Circuit

Published:2011/5/21 0:45:00 Author:Robert | Keyword: Photoelectric, Control | From:SeekIC

In this circuit, IC1 is a optocoupler. When the LED is lighting, the phototransistor would be connected to trigger the SCR TIC206D connected. So this would contact and connect the large power AC load. The AC electricity would be added on the regulator D2, D3 and C1 through R, D1's voltage step-down and rectifier. Then it produces 30V DC voltage. T1, T2 and T3 are zero-crossing detection circuit. When the AC commercial power cross the zero stage it would trigger the SCR tobegin the soft-starting process.



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

Print this Page | Comments | Reading(3)