3V flyback – wireless, 1 wire + sparks
3.24V is the actual measured voltage from the wall adapter. Current used is 360mA. See MrFlathunter’s channel for the flyback circuit. it is fantastic for low power high outputs 🙂 Flyback itself here is a Samsung FCK-14B2 Transistor is a 2SC2625 100ohm resistor into 20K pot.