This guy has had a circuits website for a long time but the circuits have errors. I’ve sent him emails with corrections but he became annoyed, and apparently others have done so too, because he took his email address off so no one could contact him. One wonders what motivates someone to go to all
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There is a video on Youtube in which the vlogger who calls himself Chilliqueen(some number) calls a two transistor circuit a Super Joule Thief. I don’t agree, a conventional Joule Thief circuit has only a single transistor. Then he claims that the capacitor and inductor is “an RLC resonant circuit”. I again disagree. The capacitor
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From my watsonseblog dated 2011 Sep 07 2011 Sep 07 LC Meter Model LC100-A In the middle of August I got on eBay and bought a LC meter model LC100-A, which is actually just a PC board, an LCD display, 2 very short clip leads with alligator clips, and a short USB to mini USB
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Note: This blog uses some names of companies that are everyday names, and I am not implying that they have anything to do with anything illegal. I do not imply and I do not make any claim that any company is doing or has done any of the things I talk about. Many people get
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This Instructable tells how to build a LED flashlight that is connected to and derives its power from the telephone line. If you can’t take the time to read this, at least read the conclusion at the end. First off, I must warn the reader that this is illegal, foolish, dangerous and can cause problems
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Not all of my many Joule Thiefs are powered by electrochemical means. Some are powered by electromechanical devices. This one is powered by the rotating head assembly of a VHS tape recorder. As can be seen, the motor is a series of coils wound around an armature inside of the rotating magnet, which is attached
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I posted this circuit to the ‘net a long time ago, and it hung around on various forums or websites for a long time. I had it in watsonseblog but that’s no longer available. So here it is, along with a few more touch switch type circuits. It’s a flip-flop that it toggled by the
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In Jan 2009 I collaborated with Quantsuff and we tried different designs for a low voltage Joule Thief. The conventional silicon BJT Joule Thief (bipolar junction transistor) has a base to emitter forward voltage of about 0.55 to 0.6 volts, so if the supply is below this voltage it will not start. But once it
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I built this Blue Blinky and installed the partly used AA cell on Dec 1, 2007. For most of the next 21 months, on or about the first of the month I published a short blog on how it was doing. As the cell ran down it got dimmer and dimmer, but continued to flash,
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Ωne of the readers of my late, great watsonseblog sent me an email and asked some questions about the Joule Thief coil. But before I get up to speed I think it would be a good idea to read the warning at the end of this blog. my Q was: what is the relationship of
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