Solder Fume Extractor Light

I have grow tired of working in the shadow of the solder fume extractor. In this quick article I build a LED light for the solder fume extractor. 

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Joule Thief Measurements: Base Resistor

After selling out of both of the Multi-LED Joule Thief and the Joule Thief Candle on Tindie it became necessary to not only make more but to update both models. Before updating I wanted to make a few measurements of the circuit to better understand how I could increase its performance by changing the resistance of R1 connected to the base of the NPN transistor.

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