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Joule thieves, let there be electric light!

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Joule thieves, let there be electric light! Empty Joule thieves, let there be electric light!

Post  JingleJoe Sun Oct 19, 2008 10:43 pm

I just love joule thieves! No I didn't make a spelling mistake and no this isn't about burgulary!

A joule is a very tiny measure of electricity, and a joule theif circuit sucks out the last bits of power from a run down battery.
They allow you to light LEDs from a single AA battery! No longer do you need 3 volts for one LED, you can use a single 1.5 volt battery! And if you divert the circuit two ways where you would connect the LED you can run two from one joule theif circuit and one 1 and a half volter!

This is where I found out how to make them:
Joule theif video!
Theres alot of different kinds of joule thief but I think this is the simplest and it is damn good!
(By the by I exchanged the 1K resistor for a 0.2k [200 ohm] resistor when using two LEDs, just makes them both a bit brighter!)

Using this fantastic circuit I have made a few glowing devices
At the moment I only have photos of my Gameboy lights:
They used to eat batteries like no-ones business but now they work from one, and a run down one at that!
Spoiler:

Joule thieves, let there be electric light! IMGP1817

Joule thieves, let there be electric light! IMGP1823


Joule thieves, let there be electric light! IMGP1811

Joule thieves, let there be electric light! IMGP1819
Note: Those two are for sale! e-mail me for more info, this isn't trading! Razz

Please await some photographs of more joule theif creations Very Happy

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