This is the simpelest stun gun you can find.I got bored and found an old 220V to 12V transformer and i got the idea of a stun gun. the reley is the oscilator and the transormer steps up the voltege.
Its workd qoite good.Fist i togt it wont even work so i presd my finger quite hard on the contacts and wow.my finged was itcy for the nekst 5 minutes.It wod be a good shock i you wod hardly push it on someones leg.
I had 2 of dose to but as they get wared out they give just a slight tricle. But they have higher voltege 5-10 kV but at very very litle cutent so they dont shock to good.
You can also make a shocker out of an high inductivety coil