A Fully Self-locking/Interlocking Switch Circuit Using Signal Mutual Control

In many industry applications, the self-locking and interlocking switches are usually used to control electrical equipment or applied to automation control. The electronic self-locking /interlocking switches can improve the disadvantages of the conventional self-locking/interlocking switches using relay types; however, they can not achieve the real interlocking state when two push buttons are pressed at the same time. In this paper, a fully self-locking/interlocking electronic switch circuit based on MOSFET is proposed to solve the above problem by using a technology of signal mutual control.