All about the Joule Thief -> http://en.wikipedia.org/wiki/Joule_thief
Video too -> https://www.youtube.com/watch?v=0GVLnyTdqkg
Now this video is too much for some but I like how they left the drawing up for a long time so folk can make one.
OK, why didn't many LED flashlights use this? Patent.
Bob
How to test AAA batteries ->-> http://www.youtube.com/watch?v=Y_m6p99l6ME . Kinna neat....Digger

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