Thread: Big Joule Theif
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Old 11-08-2010, 10:57 AM
electricity electricity is offline
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Join Date: Oct 2010
Location: Hawaii
Posts: 122
JT for large CFL

@ Nick,
I have been thinking of the same thing, I want to light my work shed with some gutted large CFL, several of those 100w puts out nice light at full brightness.

What will be a good JT circuit to light a bank of gutted 100W CFL off a bank of 12v 220ah deep cycle batteries with solar charge.

What is the draw on these at full brightness with good JT. I see that some small JT light up 13w CFL to full with 0.3 amps x 1.5v

I have found a large 5" OD, 1.75" ID, 2.25" H cone ferrite core from TV deflection yolk with 2 windings of several hundreds windings.

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Last edited by electricity; 11-08-2010 at 11:01 AM.
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