Instructables

Joule thief 6 LED Flashlight Torch

Joule thief 6 LED Flashlight Torch

After reading Evil Mad Scientist Laboratories on how to make a joule thief , I decided to resurrect my 1 AAA cell flashlight torch using the joule thief design .
 
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Step 1: Joule thief 6 LED Flashlight Torch

Picture of Joule thief 6 LED Flashlight Torch
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First I made a test rig using a 338 transistor,
6 x 3mm LED's and 11 windings on the toroid.

Step 2: Joule thief 6 LED Flashlight Torch

Picture of Joule thief 6 LED Flashlight Torch
Then I compacted the parts ready to fit into the torch.

Step 3: Joule thief 6 LED Flashlight Torch

Picture of Joule thief 6 LED Flashlight Torch
Then fit it into the torch,

Step 4: Joule thief 6 LED Flashlight Torch

Picture of Joule thief 6 LED Flashlight Torch
The final product
PhilKE3FL4 months ago

Hmmm, am I the only one seeing seven LEDs in that flashlight?

bigb09868 months ago
Hi buju357,
please tell me what do you mean 11 windings on the toroid?
there are two windings,A1-A2 and B1-B2. Now tell me which is the 11 windings one of these or both?
buju357 (author)  bigb09868 months ago
hi
I used 11 winding's for both A and B
bigb0986 buju3577 months ago
thanks :-)
If you would like to make it easier for readers to follow up on your Instructable, please include a few more details such as the final schematic, wire gage for your toroid along with your comments about how well you thought that your project worked...
very very nice. I made one a while back only using one 10mm white led and its the brightest little thing. http://www.youtube.com/watch?v=fcTwhqfUkxk
whats the run time on yours?
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