/diy/ - Do It Yourself

>>1146935
The LED and transistor could also be hard to put more voltage through, though changing the dropper resistors to a higher value should do the trick. Bonus points if you can just use pic related. If it's particularly badly designed the wattage ratings of the resistors could be a problem, but I doubt that. If you increase the voltage too too much you might run into trouble with the transformer secondary's insulation, so if you do plan on building a stun gun, I'd build the circuit from scratch.