Clear Silicone seal does wonders when it comes to weatherproofing and sealing against moisture. I used it to cover up and protect the Joule Thief parts on this nearly disposable flashlight. Components I wound two six inch lengths of 20 AWG (0.25mm) solid enameled magnet wire (bifilar wound) onto a 0.25 inch outside diameter ferrite
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On occasion I see others refer to the Joule Thief and flashlight (torch) page of talkingelectronics.com. He has many comments, some good, some not so good, and some that miss the mark. Someone recently mentioned the Circuit B, which is shown in one of the pictures. He talked about increasing the efficiency a lot by
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I found an invention that I think is worthy of investment. The guy has a really amazing invention, and needs the money to get started. And it has to do with LEDs – cool! Actually, you don’t have to invest much, a dollar or more, or buy the T-shirt as I did, or more if
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In 2000 and 2001 the pirate manipulators the likes of Enron drove So Cal Edison and the other electric companies in California to the edge of bankruptcy and caused the electricity shortage, and along with that threats of rolling blackouts. I was concerned about being stuck in some elevator without a flashlight, and since LED
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Here’s a two LED joule Thief project that I did about a decade ago. I took the first picture in Feb 2007, more than 5 years ago, and wrote a watsonseblog about it. The second pic was taken even earlier. It works pretty good. The oak case is definitely unique. Later I used a thin
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Last night I had some bad dreams. First I dreamed I was eating a giant marshmallow. Then I woke up and I couldn’t find my pillow. I looked at the clock and it said quarter to three, so I went back to sleep. I had another nightmare. I dreamed I ordered a super high capacity
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Most people with some exposure to technology have heard of Moore’s Law. Well, I for one had never heard of Haitz’s Law. It is basically similar to Moore’s Law but applied to LEDs. I read the Wikipedia article in the above link and learned about not only Haitz’s Law, but that the luminous efficacy of
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There is a recall on this set of flashlights sold by Target. http://www.cpsc.gov/cpscpub/prerel/prhtml12/12080.html
I recently found this article on how to convert a Mini Maglite to use a LED instead of the incandescent light, and the author does it by using a Joule Thief. This has been an inspiration to me, because I have thought about converting several flashlights to LEDs or to a single battery but I
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