Joule thief

Some fun projects you might want to try: 4069 Theremin A very simplistic Theremin, using only one 4069 IC. The reference oscillator uses a 455KHz ceramic resonator, and the varying oscillator uses …

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Make a Joule Thief Coil Without a Ferrite Toroid: There are many different articles and videos to be found online that will teach you how to build a Joule Thief circuit and power LEDs off of dead batteries. Most of them, however, call for some form of coil made using a ring, or toroid, made of fer…

Make a SUPER Joule Thief Light!: A joule thief is a simple circuit that can take 1.5 volts and put out as much as 5 volts. It can light an LED super bright! But have you ever heard about getting 120 volts out of a AA battery? The Super Joule Thief can do just that! It is perfect fo…

"Joule Thief" - No IC and No Transformer: Yep, no transformer and no hard to get IC. But, ... two transistors and other parts are required. I actually found this circuit by accident while roaming Colin Mitchell's Talking Electronics website (talkingelectronics.com). This website is very ric…

Joule Thief for Me: Finally , I made it !!!I wanted to make this nice circuit as soon as I heard of it.If you don't know it , it's OK.Read about it : Joule ThiefSimply , it's a simple boost converter. DC voltage step up circuit.I used this instructable as a guide.https…

Water Powered Flashlight: Batteries are too mainstream, let's make Water Powered ones! The DIY flashlight never runs out of batteries, water is all around us and will never run out. One of today's causes of pollution is the improper disposal of batteries containing heavy met…

Super Joule Thief by xee2

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Bicycle Cell Phone Charger (Wind Turbine With Build in Battery): I go very often to cycle in the nature where is no electricity, and during a long bike tour my phone usually discharges. These smartphones have a large capacity but its consumption is big too. I made a few weeks ago another bike turbine for the Bicy…

This 1.5 V Joule Thief circuit can turn ON one LED. The circuit do not use a toroid coil, but it is possible to turn on a common red, green or yellow LED

skema joule thief 1,5v to 220v ac led light

Transformerless Adjustable Joule Thief: Did you have problems winding the toroidal transformer of a regular joule thief? If so then this instructable is for you! And if not it is also an interesting circuit to see. In this instructable I will show you how I made the simplest joule thief I…

This is a 1.2-volt single transistor flyback (Joule Thief) circuit that features a third coil. With it, flash duration and brightness is much enhanced, even with just a 10uF capacitor, as can be seen in the schematic. Description The parts to the right of T1 form a simple Joule-thief (‘Blocking’ oscillator) circuit which boosts the 1.2vRead More

Easy Joule Thief Soldering Project: The Joule Thief is a clever little circuit that can light a LED with a battery that is nearly dead. It does this with a pair of opposing magnetic fields. I like this circuit because it is simple to build, yet demonstrates some very complex electrica…

Joule Thief, Slayer Exiter, Tesla Coil, Tesla Spule by xee2

Yet Another Joule Thief Tutorial: This is a tutorial for making the ever-popular LED Joule Thief. I made this instructable as a companion instructable for my Joule Thief 10x10 LED Lamp. Description of a joule thief from Wikipedia: A joule thief is a minimalist self-oscillating volt…