Mosfet Touch switch

 This is a touch switch using only a mosfet. The circular object is an LED and the box is a resistor . Chose a resistor that will protect the LED.

The simple principle of a mosfet is that power flows from the source(S) to the drain(D) and the gate(G) is used to regulate the voltage that flows between the S and D.

Coz a mosfet has a capacitor , this means that it has more voltage than a normal transistor . When you close the G by touching it, this closes the gap between S and D hence completing the circuit.

I think when you touch the off wire you are kind of creating a short circuit .

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