ON OFF switches

This page contains multiple types of On/off switches

Separated On and Off

This consumes 0 power when off.

Same button for On and Off

The same switch does On and Off function.

Same button for On and Off 2


The same switch does On and Off function.

Q1 discharge C1 through R3 when is turned ON, so when you push switch, discharged capacitor pulls gate to 0V. When is not powered on, gate of Q1 is low, why? because it is not powered on and Q2 is allso not powered on, and on output is 0V.

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