I had two Joule Thief circuits. I decided to give one away to a new friend I met on Youtube. I am still impressed by these little circuits and how they use just about any battery size to produce light with LEDs.
VIDEO
The circuit is made with a toroidal inductor, resistor, capacitor, and transistor.
If you are interested in knowing more about the Joule Thief circuit, I have several posts and videos:
Leave a Reply