'TENS' Unit for pain relief

[ppppenguin]

Not much point in building one when you can get them very cheaply. There's also a safety aspect so getting one that's properly tested and certified strikes me as a better bet than DIY. Unless of course you want to crank up the volts and do electrical torture on your enemies. More volts Igor!
http://www.lloydspharmacy.com/en/electri...in-relief/