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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The Coil: Explanation The coil, the heart of t he Joule Thief, is somewhat mystical in that those that understand basic DC and AC theory do not understand how a coil works. I will admit that I am no expert on magnetic theory but one does not need to know magnetic theory in order to
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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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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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My Watsonseblog dated 2011 Sep 18 2011 Sep 18 200 Volt Joule Thief This turned out to be easier than I thought, since I was messing around with some serious voltages. It didn’t take long to wind the core, and I used some scraps of wire (you can see the splices I covered with
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Early on in my JT experiments I experimented with a pot (potentiometer) in place of a resistor, which was used as an adjustable resistor and allowed me to optimize that particular JT. After the optimum setting was determined, the pot could be removed and replaced with a regular resistor. It seemed that the pot was
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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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Or Flashing Joule Thief, or blinking Joule Thief, or 1.5V flasher or 1.5V flashing LED or low voltage LED flasher… I guess there could be a few more names that describe a family of circuits that use a single 1.5V cell, and flashes or blinks a LED. I’ve found a few ways to do this
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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’m working on this one. In Fig.1, there is a schematic of a conventional Joule Thief. If the battery drops below 0.5V, the circuit will not start on its own because the battery voltage is less than the forward voltage of the base. In Fig.2, the Bat22 provides about 33 microamps through R21 and R22a
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