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I'm beginner in Electonic, tried things as hobby.. a basic circuits. I  tried Joule Thief circuits  but wasn't success. Searched webs and testing every valuable comments in this instructable... still it's not worked.

Joule thief is not working.
http://www.instructables.com/answers/Joule-thief-is-not-working/

Then I found this site.
www.MadScientistHut.com/forum_php • View topic - Joule Thief Kit
http://madscientisthut.com/forum_php/viewtopic.php?f=12&t=3

The Notice in  Schematic caught my attention. Checked mine and corrected it.
+++ THEN IT WORKED +++



For the beginner... the tricks and notices are VERY IMPORTANT..., success in easy Project is a base to another difficult one. I should have commented in the above instructable topics but decided it should be raised for beginner  easily searching.
Thanks for those above 2 web topics for my success. :)
Sorry for all the Pro here you could pass it. This is my first submit so please be easy to me.

Here is what's wrong and corrected on my project.

<p>Well done! I made the same mistake and a fellow ham radio friend pointed it out to me, dah. Then I went searching and found the explanation, I believe on Wiki of the two types of windings, if you attach the same side ends of the wires together it is called a non-inductance winding, and it is useless for the Joule Thief. I haven't yet found out what it would be good for.</p>
I want to make one and was going to check out the pic you have up there but it's extremely blurry.
Thank you for posting this. Exactly what I needed, got my failed project working now. :)
Thanks, i built one and it didnt work, i suspect thats exactly what i did wrong. time to get a needle out and re wrap one coil
It shows that the polarity of the LED can be determined by the metal parts inside. It happens to be that many of the LEDs are arranged internally this way, but not _all_ LEDs. The only true indicator of polarity is the flat spot on the rim of the plastic case. When a machine inserts the LED, do you think it looks inside to see which way it goes? Nah.<br>
It shows that the polarity of the LED can be determined by the metal parts inside. It happens to be that many of the LEDs are arranged internally this way, but not _all_ LEDs. The only true indicator of polarity is the flat spot on the rim of the plastic case. When a machine inserts the LED, do you think it looks inside to see which way it goes? Nah.<br>

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