Ion generator powered by 110-240V mains supply. It uses the standard Cockroft-Walton multiplier circuit - a ladder of diodes and capacitors to pump the output voltage up to the level required. Fuse built into the PCB. Uses ordinary needle work pins as the ion emitters. Neon indicator to show when the power is on. Reversing the 1N4007 diodes makes it a positive ion generator. The user must supply a suitable box for this project. CAUTION: This is a high-voltage, mains supply project. The user must take extreme caution