More Mini Coils

• To: "'Tesla List'" <tesla-at-poodle.pupman-dot-com>
• Subject: More Mini Coils
• From: Tesla List <tesla-at-stic-dot-net>
• Date: Wed, 18 Jun 1997 02:48:31 -0500
• Approved: tesla-at-stic-dot-net

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From: 	Greg Leyh[SMTP:lod-at-pacbell-dot-net]
Sent: 	Tuesday, June 17, 1997 11:55 PM
To: 	Tesla List
Subject: 	Re: More Mini Coils

Robert W. Stephens wrote:

> 
> Not to rain on your parade or anything but I just have to correct
> you.  What Malcolm achieved was most definitely *NOT* 60 watts per ft
> of discharge.  He reported producing some 4 inches of discharge for
> 20 watts input.  

20W / 4in = 60W/ft by my calculation.  Remember, the unit W/ft is not
a length, but is rather a ratio used to determine coil effectiveness.

> As we (that have actually gotten our hands dirty and
> built coils that is, and I'm not saying you haven't) know well, the
> ratio between input power and output spark length is far from linear.
> Streamers issuing from a topload terminal seem to crave increasing
> power at an exponential rate to their length.

All too true :^<   Perhaps a more direct measure of coil effectiveness 
would be to normalize the W/ft ratio to operating power level. 
None the less, Malcolm's 'little wonder coil' does provide an 
interesting data point, in a sparsely populated area of tesla coil
parameter space.  Way to go, Malcolm!

-GL

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