that was my point, sort of. my point was, in order to get any "useful" energy radiated from an "EMP gun", would require a lot more energy than you're ever going to get from a wall outlet. the worst you will accomplish with a line current powered device is probably erase your credit cards if you're standing too close. the Air Fprce's test bed generated 0.2 TERAWATTS..... that's twenty million times more than what's available on a typical 100 amp residential service. granted the 0.2TW was in the form of a pulse, but you still have to charge the thing in a reasonable amount of time, and you're not going to get there with a 100A service... and you really won't get there with a flyback transformer running at an average of 20-50W.