/diy/ - Do It Yourself

I have a question. This is my EMP stick, made with a flash circuit from an old disposable camera, and some old electrical wire from the house. I know I might need a better coil (maybe magnet wire) and simply form the coil better, but other than that and a bigger battery/capacitor, what could I do to make it work better? I have tested it, and it works on egg timers and such, but nothing more complicated.