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Re: Tesla Coil RF Transmitter

Original poster: William Beaty <billb@xxxxxxxxxx>

On Fri, 7 Oct 2005, Tesla list wrote:

> Original poster: Ed Phillips <evp@xxxxxxxxxxx>
>
> 	You omit the enormous capacitance of the "conducting plasma", which is
> connected to the transmitter.  It is measured in FARADS, not nano FARADS
> or pico FARADS.

Says WHO?

> The tesla coil transmitter must supply the current and
> power to elevate that plasma to the operating voltage.  Published data
> says that capacitance is of the order of 0.25 FARAD.

Evidence?

I vaguely recall a number more like 1000uF, but I don't see it in books in
my collection.

Lets try calculating:

 Area / Platespacing * 8.9e-12 = farads

 4 * PI * 6,400,000^2 / 100,000 * 8.9e-12 = 46,000 uF

To get 250,000uF the insulating part of the atmosphere would have to be
only 12 miles thick.



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William J. Beaty                            SCIENCE HOBBYIST website
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