Jonnydavro’s Reverse Joule Thief
This is a replication of Jonnydavro’s “Reverse Joule Thief”. It is an LED oscillator that will run at under 100 millivolts. I show it here with a microwave oven transformer but the circuit will also operate on other transformers. The circuit is very similar to the “Joule Ringer” and Slayer Exciter” and is very very simple.