The self-lock switch circuit

Published:2011/7/8 1:23:00 Author:Seven | Keyword: self-lock switch | From:SeekIC

The action machines or contactors of ordinary converter switches or toggle switches are easy to break, at the same time, they are easy to burn due to the large impact of currents. Here is to introduce a simple circuit which can replace this switch. See as the above circuit, before AN is pressed, SCR1 is blocked, the relay or contactor is still, which is equal to the cut off state. When AN is pressed, the 12V voltage provide with trigger current for SCR1 through R1, AN and VD1, and SCR1 is conducting, K is getting power, the load is connected by the contactor and getting into work.



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

Print this Page | Comments | Reading(3)