RE: [TCML] Primary selfC

["Lau, Gary" <Gary.Lau@xxxxxx>]

Hi Paul,

Thank you for chiming in.  This is something that is counter-intuitive and perplexes me too.  Perhaps you can shed some needed light.

Intuition suggests that Cself is dependant on more than just the overall dimensions of a coil - that the capacitance between adjacent turns would factor prominently.  Would a space-wound coil have the same Cself as a close-wound coil wound on the same form?  Would a ribbon-wound coil (case in point) with air between the turns have the same Cself as the same coil with a high k dielectric between the turns?

No doubt the answer is yes to both, but it's not clear why.

Thanks in advance,

Gary Lau
MA, USA



> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of Paul Nicholson
> Sent: Thursday, July 24, 2008 6:39 PM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] Primary selfC
>
> Chris Swinson wrote:
>
>  > Does anyone know how to work out , or know of an online
>  > calculator for crunching primary Self Capacitance ?
>
> Does JavaTC not give the Cdc of the primary?  If not,
> use JavaTC or FANTC to work out the self capacitance of a
> disk.
>
> Then, divide the Cdc by two to get an approximate effective
> capacitance.
> --
> Paul Nicholson

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