Boosting 3V to 1800V without chips

T1Covered by 1 source · first reported by Raspberry Pi / Arduino / Adafruit at 06 Nov, 14:32 UTC

electroniclovers has posted a breakdown on Hackster.io of how an electric fly swatter turns two AA batteries into an 1,800V zap, without a microcontroller or a driver chip. The first stage is a self-oscillating transistor circuit. A transformer has three windings: an 8-turn primary, a 1,200-turn…