Joule Thief The Janke Family > Projects > Engineering > Joule Thief fractil May 21, 2016 0 Engineering, Projects I built a joule thief years ago by recycling parts from old controller boards. I found these cool kits on one of the Maker sites I frequent. The boys rocked their first soldering project. ← Previous post Next post → Leave a Comment Cancel replyYour email address will not be published. Required fields are marked * Save my name, email, and website in this browser for the next time I comment.