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The simple and useful 3-key interlock electric switch circui

2017-01-06 14:40  
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The simple and useful 3-key interlock electric switch circuit
The structure of the circuit is simple, a channel is opened by pressing a corresponding key, meanwhile the other 2 channels are closed. The contactor shake does not affect the working of the circuit, so the anti-disturbance ability is good. If the drive triode in the back was removed, the static power consumption of the circuit would almost 0. If the key was removed, the circuit would be the pulse control.