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Small tesla coil (1sq ft) findings





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From:  Malcolm Watts [SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent:  Thursday, June 18, 1998 4:31 PM
To:  Tesla List
Subject:  Re: Small tesla coil (1sq ft) findings

Hi all,

> From:  Jeff Corr [SMTP:corr-at-enid-dot-com]
> Sent:  Thursday, June 18, 1998 12:45 AM
> To:  tesla list
> Subject:  small tesla coil (1sq ft) findings
> 
> Hello all...   in order to have a tesla coil in my college
> dorm room next year :-)  I had to construct a special one.
> 
> It is mounted on a 12"x12" plywood section, the secondary being only
> 12" tall.
> 
> The reason I post this here is I find it interesting this coil can produce
> 12" long sparks, the length of the coil itself.
> 
> Just thought that someone else might be interested in duplicating this
> coil as it is small enough to carry anywhere, and still performs very
> well.
> 
> 
> Here are the specs :
> 
> power  level - 9kv, 30ma 270VA
> 
> capactitor - .004uf , rated at around 12kv (physical dimensions 8" long, 3"
> in diameter)
> 
> primary - helical, 10 turns of #20 solid copper, turns 1/8th inch apart.
> 
> secondary 1.5"x12", #32 copper enambled.
> 
> Spark gap, single gap, half an inch apart.
> 
> No safety gap, no chokes, just neon, primary, secondary, gap, and cap.

This post makes me think it could be time to resurrect Robert 
Stephen's suggestion of a competition for small coils. I would 
definitely be a starter in the bang for buck stakes. Whatthinks?

Malcolm