Touch switch activated relay – source A very simple touch switch circuit diagram can be constructed using this circuit schematic . This circuit will turn on /off an electronic relay using the same ...

But once the coherer becomes conductive, the relay becomes energized and closes its switch ... circuit that’s independent of the coherer — a sort of mechanical amplifier. Notice that the ...

As you can see in the schematic ... relay switches and now T1 (plus) is connected to contact 2 (and 3) and T2 (minus) is connected to 4 (and 1) therefore the motor is changing the direction of ...