Re: Capacitance of toroids

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "C. Sibley" <a37chevy@xxxxxxxxx>

Isn't interal diameter essentially a function of the
external diameter and tube diameter?

InteralD = ExternalD - 2xPipeD

Baciscally if you have any of the two you can derive
the thrid measurement.  You don't need all three...

Curt.


--- Tesla list <tesla@xxxxxxxxxx> wrote:

> Original poster: "Adriano Mollica"
> <adriano.mollica@xxxxxxxxxxx>
>
> Hello to everyone,
>
> I almost finish the construction of my TC, but i
> have a little problem.
> I need a top load of 29pF, than i think is ok, and
> i'm going to make it by
> using a extensible aluminium pipe, that is pretty
> cheap and easy to put in a
> toroid shape.
>
> My question is, how can i calculate the capacitance
> of that toroid i'm gonna
> build?
>
> i found on internet two different way to calculate
> it, but  both use only
> two parametes witch are , in one case: internal
> diameter and external
> diameter, or in the other case: external diameter
> and size of the pipe.
>   And of course, i obtained 2 quite different
> measurements. What i need, is a
> formula that use all three parameters toghether:
> inside diameter(d) ,
> external diameter(D), and size of the tube(x).
>
> do you know the answer?
>
> thanks, Adriano
>
>
>


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