With this simple device you can use AA and AAA batteries down to 0.3 volts which is way below the point where these batteries are normally considered dead.
A Joule Thief can keep an LED going for days, weeks or months on a single dead AA or AAA battery. This is also something you can make at home for free in minutes using recycled electronics.
I got most of my parts out of a dead old television for this project. All you need is a toroid form, some wire and a couple electronics components.
This is useful for long lasting emergency lighting or in a survival situation when most of your batteries are too weak to power a flashlight.
You can also use the Joule Thief to power an LED with the Earth Battery I have previously discussed.
There are many exciting uses for such a circuit.
You can read the entire article with instructions here:
http://www.thedoityourselfworld.com/articles/article.php?id=11461
You can watch the video here:
Please subscribe to my YouTube channel and follow along as I experiment with electronics and alternate energy.
What is the oscillation frequency of this circuit?
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I did not measure it. Since I used recycled components and dont every know anything about the coil I used, unless I measure it with a scope, I dont know.
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I wanted to know about the operation and how to adjust the frequency.
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It is not necessary to adjust the frequency. Its a very basic circuit. You can make it using scrap parts. That is the cool part of it.
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Certain frequencies cause people to ''zone out' and even pass out into epileptic seizure so should be avoided with lights. I don't have a coil and would need a part number and more specs to order one. To me there is too much info missing to construct this circuit.
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Why did you flag jackhoffmann post that at least had a schematic of the circuit whereas you did NOT show one. Your directions were so poorly done that no one could follow or construct anything. A schematic is mandatory and shows how everything is connected. Your blog post is a total failure. You are electronics FRAUD with NO CREDENTIALS.
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Oh look, I did have schematics here: http://www.thedoityourselfworld.com/articles/article.php?id=11461
Hmm, you must have missed that huh
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Well then just leave and find something else that entertains you.
Thank you for your opinion.
Bye now.
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As to credentials, well, lets just say its no use arguing with a common troll.
Bye now.
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OMG, so trog didn't invent this? Another lie by deception
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No lie. This technology has been around a long time. Last I checked, it was perfectly legal to make one for demonstration purposes.
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you don't get much traffic on this- your second channel. Why didn't you mention it to me and I would have been here from day one. Is Ming LIng OK with trying to make ends meet when you spend 10 to 12 hours a day on steemit for 50 cents a day? Kinda makes her do all the heavy work on the homestead since you also have to take your naps and stay sick most of the time.
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This channel is about electronics. Your comments have nothing at all to do with electronics.
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