Battery Free LED Flashlight Driver – SJR Looper V4
I have made some more progress with the SJR L circuit. I have some more pot cores coming to test different sizes and materials. I think I need to go back and test using the copper foil within the coil instead of the air capacitor. Those of you who have followed this project will know what I am talking about.
Schematic coming soon at: http://laserhacker.com/?p=491
Ready made prototypes at Tesla Maker: http://teslamaker.com/