Re: foil enamal caps

To: tesla-at-pupman-dot-com
Subject: Re: foil enamal caps
From: RWB355-at-aol-dot-com (by way of Terry Fritz <terryf-at-verinet-dot-com>)
Date: Tue, 03 Nov 1998 18:47:06 -0700
Approved: terryf-at-verinet-dot-com
Hi Jeff, All,

You COULD do this,
but if you calc the cap values you would get (with a 1" safety margin all
around) you will see why no one uses these for TC work (other than for the RC
or RLC safety filter). 

A 20x20 cm cap made from pc board gives you aprox. 660 pf (!). If you want
something like say 20 nF you would need about 30 of these pcb caps. 

For a bigger TC cap, lets say 80nF (which sure isn´t the max used), you would
need 
122 of them. 

That poses a big space problem.

Coiler greets from germany,
Reinhard


 
 Original Poster: Jeff Larson <jflarson-at-starnetinc-dot-com> 
 
 I had thought of a similar idea, but using printed circuit board
 matterial.  
 You already have the plates on both sides that is if you are using
 double sided 
 circuit boards.  You would have to trim back the copper around the edges
 of the board, but after that, no problem, unless fiberglas is lossy?
 
 Jeff
 
 
 
 
 ----------------------- Headers --------------------------------
 Return-Path: <tesla-request-at-pupman-dot-com>
 Received: from  rly-zb03.mx.aol-dot-com (rly-zb03.mail.aol-dot-com [172.31.41.3]) by
air-zb05.mail.aol-dot-com (v51.10) with SMTP; Mon, 02 Nov 1998 20:21:57 -0500
 Received: from ez0.ezlink-dot-com (ezlink-dot-com [199.45.150.1])
 	  by rly-zb03.mx.aol-dot-com (8.8.8/8.8.5/AOL-4.0.0)
 	  with ESMTP id UAA19861;
 	  Mon, 2 Nov 1998 20:21:46 -0500 (EST)
 Received: from pupman.pupman-dot-com (pupman-dot-com [199.45.150.249])
 	by ez0.ezlink-dot-com (8.8.8/8.8.8) with ESMTP id SAA30165;
 	Mon, 2 Nov 1998 18:22:02 -0700
 Received: (from slist-at-localhost)
 	by pupman.pupman-dot-com (8.8.5/8.8.5) id SAA26950;
 	Mon, 2 Nov 1998 18:21:12 -0700
 Resent-Date: Mon, 2 Nov 1998 18:09:02 -0700
 Message-Id: <3.0.6.32.19981102131132.008fbdd0-at-verinet-dot-com>
 Approved: terryf-at-verinet-dot-com
 X-Sender: terryf-at-verinet-dot-com (Unverified)
 X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.6 (32)
 Date: Mon, 02 Nov 1998 13:11:32 -0700
 To: tesla-at-pupman-dot-com
 Subject: Re: foil enamal caps
 Mime-Version: 1.0
 Content-Type: text/plain; charset="us-ascii"
 Resent-Message-ID: <"S6GYX1.0.aJ6.kUbFs"-at-poodle.pupman-dot-com>
 Resent-From: tesla-at-pupman-dot-com
 X-Mailing-List: <tesla-at-pupman-dot-com> archive/latest/217
 X-Loop: tesla-at-pupman-dot-com
 Resent-Sender: tesla-request-at-pupman-dot-com
 From: Tesla List <tesla-at-pupman-dot-com>
 
  >>