Joule Thief Simulation

One Winding Joule Thief

February 19, 2012 Kirk Comments 0 Comment

We had some high permeability toroid cores shipped in. The permeability is so high that it can achieve somewhere between 3-5uH per each winding. This allows for us to make a High Power Joule Thief with just one winding on each side of the transformer.

The new one winding Joule Thief is very stable, starts up at below 600mV, and runs very bright at 1.5VDC leaving spots in your vision if you happen to glance at the LED while it is on. These units are assembled, tested, and can be purchased here.

Here it is running off of a single AA battery.

Introducing the Cree 1 Watt LED High Power Joule Thief Kit

December 4, 2011 Kirk Comments 0 Comment

We are very excited to introduce our newest Joule Thief kit. This kit is a higher power Joule Thief kit that includes a Cree 50 Lumen XLamp 1 Watt white LED. See our energy harvesting product section to purchase this kit .

You can also purchase these Cree XLamp XL LEDs as an individual unit by going to our components section.

Joule Thief Kits are Availible Now

January 1, 2011 Kirk Comments 0 Comment

Our Joule Thief Kits are available now. They are on sale for $4.99 each.

If you are student and you plan on using any of the Joule Thief products for a school project please contact us at sales@madscientisthut.com for a discount.

To purchase this item click –> Buy Joule Thief Kit Today

This Joule Thief Kit is available as a thru-hole board kit. This kit allows you to substitute components and includes all parts and a quality PCB. The PCB is double sided with extra copper around each hole on both sides, all traces are redundant top and bottom of the PCB. The PCB design allows for the components to be replaced many times as long as good soldering practices are followed. Substituting components will allow the experimenter to try for different voltages or efficiency.

Kit Contains:
* 40 inches red magnet wire
* 40 inches green magnet wire
*1ea – NPN TO-92 transistor
*1ea – torroid
*1ea – 1/4watt axial resistor
*1ea – PCB
*1ea – Ultra bright white LED

For detailed product information please consult the product forums section of this website. http://www.madscientisthut.com/forum_php/JouleThief

For assembly instructions click here: Assembly Instructions

BIG educational discounts on kit quantities of 20 or more. Educator kit also includes 1 assembled and tested Joule Thief, please contact us at sales@madscientisthut.com for more information on customized kits.

Joule Thief Simulation II

December 22, 2010 Kirk Comments 0 Comment

We have Joule Thief kits in stock. This also includes our new high power Joule Thief Kit that includes a Cree XLamp 1 Watt white LED. We ship all over the World.

For a fully interactive simulation; visit the forum at http://madscientisthut.com/forum_php/viewtopic.php?f=12&t=3 to download the simulation files, a link to download the free LTspice simulation software, and to see the joule thief schematic (the download is near the bottom of the page).

I did the Joule Thief simulation graphics again. I wanted to make them a little better this time. I added some arrows on the schematic to show where the simulation graph values are coming from, I hope this helps. Click on the image, then click on the next page image for a full size version ( I still have to figure out why you have to click the image twice to get a full size image )

Joule thief Simulation II Graph and Schematic

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