2012/03/122012/03/14 By admin In Joule Thief SMPS DC-DC 2012-03-12 Slinkys for the Joule Thief Coil I’ve seen other weird things used for a Joule Thief coil, but this one is really odd. But it works. http://www.youtube.com/watch?v=Ca9VzrAXMgE