Re: Query on toriod -> ground capacitance

To: tesla-at-poodle.pupman-dot-com
Subject: Re: Query on toriod -> ground capacitance
From: Tesla List <tesla-at-stic-dot-net>
Date: Sun, 15 Jun 1997 09:12:31 -0500
Approved: tesla-at-stic-dot-net

Subject:  Re: Query on toriod -> ground capacitance
  Date:   Sun, 15 Jun 1997 04:32:50 +0500
  From:  "Alfred A. Skrocki" <alfred.skrocki-at-cybernetworking-dot-com>
    To:   Tesla List <tesla-at-pupman-dot-com>


On Fri, 13 Jun 1997 01:36:23 +1000 (EST) Rodney Graham Davies 
<Rodney.Davies-at-anu.edu.au> wrote;

> Hi all,
> 
> A friend of mine wanted to know this -
> 
> "Why does the capacitance to ground of a toroid increase when you bring
> it 
> up higher ? This is an odd occurrence and is probably not linear."

I wasn't aware that that was the case, but then again I never 
tried measuring it either.
 
> My own theory is that raising the toroid is practically the same as 
> increasing the spacing between to capacitor plates. Here, the plates are 
> the ground plain and the toroid...I could be wrong...

The only problem with you explanation is you got it backwards! As you 
increase the space betwen the plates in any capacitor the capacitance 
goes DOWN!


                               Sincerely

                                \\\|///
                              \\  ~ ~  //
                               (  -at- -at-  )
                        -----o00o-(_)-o00o-----
                           Alfred A. Skrocki
                   alfred.skrocki-at-cybernetworking-dot-com
                             .ooo0   0ooo.
                        -----(   )---(   )-----
                              \ (     ) /
                               \_)   (_/