Joule Thief, Dead Battery, And A MagnetsteemCreated with Sketch.

in howto •  8 years ago 

Here I have a single dead button battery running a blue LED for over a week.
Basic joule thief circuit, but using the magnet underneath the toroid I could make
it stay lit after the basic circuit stopped.
Also, by changing the position of the magnet I was able to
switch the light on and off, blinking, or adjust the intensity of the light.

Authors get paid when people like you upvote their post.
If you enjoyed what you read here, create your account today and start earning FREE STEEM!