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Re: Tesla and Measurements.
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To: tesla-at-grendel.objinc-dot-com
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Subject: Re: Tesla and Measurements.
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From: mrbarton-at-ix-dot-netcom-dot-com (Mark Barton)
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Date: Sat, 30 Mar 1996 01:33:44 -0800
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Hi Alan,
The secondary was wound with 22awg teflon wire around a standard size
55 gallon polyethylene barrel (talk about slippery!). It resonates at
80KHz. This lower frequency is much easier on the FETs because they
get to enjoy a longer on/off time compared to the time spent in
transition. The primary was 20 turns of 1/4 inch copper tubing in a
straight helix, 30 inches in diameter, placed at the bottom of the
secondary. Flashover problems were severe and dielectric was needed
between the windings. I would do it again with a larger diameter
primary.
Zap,
Mark
=================================================================
>
>Mark could you give me some details of the primary and secondary of
>your FET coil. I just begining to see beyond solving the electronics
>problems and looking at the next set of problems which is getting
>my head around coils, and coupling. My present primary is just
>9 turns of twin core flex round a plastic bucket, using both cores in
>series. (I found that using just one core the current protection came
>on very early limiting the amount of power I could put into the coil.
>Frustrating but better than blowing FETs. (Secondary 1600 turns
>0.4mm wire on a 4" pipe, 210khz resonance).
>