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this is how to make a high voltage joule thief!the ones i made were 90 and 180v but the more hv turns you do the higher the voltage(about ...
you will need:toroid core(ferrite)2n3904(sometimes others work too)512ohom resistorwinding wire(0.15mm approx)0.2-4mm as well!neon glow lamp (i used maplin rx70)time!
Get your 0.15mm wire and wind at least 85 turnsthrough the middle of your toroid like the pic.
twist the high voltage wires together to make winding easierusing your 0.2mm wire wind 5 turns and make a center tap and then wind another 5 the center ...
now put all your parts together .and test it!
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