The Joule Thief -- Lighting an LED with 1.5 volts

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I was bored, and needed a quick little project to keep my hands busy. I breadboarded a version of the "Joule Thief", a simple circuit which uses one transistor, one ferrite toroid wound as a transformer, and a resistor to light an LED.

Schematic borrowed from http://www.evilmadscientist.com/article.php/joulethief
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