Mosfet and capacitor switch

 

In the usual circuits, the capacitor is not included in. So why did i add a capacitor.

if u have ever built a touch switch using only a mosfet, u do know that when u touch on the off wires the mosfet will gain power over time and light up again. Which can be somewhat annoying.

But when u add a capacitor as seen above. When u apply a plus or add the wires temporarily or use a push switch( this switch should not lock when pressed.), u charge the capacitor and when u release the capacitor still has charge hence it is still providing power and working as a line which joins both the gate(G) and the source(S) of the mosfet.

REMEMBER; When u try to touch using this method it will not work coz the capacitor will need alot or current and voltage for it to charge at a small amount of time which ur fingers can't provide.

So when u press the push switch on the gate(G) Drain(D) part. This will discharge the capacitor and provide power to the gate(G) at the same time