Re: calculating copper plate indutance (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Wed, 19 Sep 2007 20:32:00 -0700
From: Barton B. Anderson <bartb@xxxxxxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: calculating copper plate indutance (fwd)

Hi Chris,

Try this:
http://www.classictesla.com/java/flatribbon/flatribbon.html

Take care,
Bart

Tesla list wrote:

>---------- Forwarded message ----------
>Date: Thu, 20 Sep 2007 23:11:43 +0100
>From: Chris Swinson <list@xxxxxxxxxxxxxxxxxxxxxxxxx>
>To: Tesla list <tesla@xxxxxxxxxx>
>Subject: calculating copper plate indutance
>
>Hi all,
>
>I am thinking about using copper strips for my primary, however I can't find 
>how to work out the inductance. The only online calculator I can find is for 
>solid wires.
>
>Or is there a simple way to convert a area to a wire dia ?  The planed 
>copper area will be 2" wide( or 50mm) , 0.8mm thick. Can that be crunched 
>into a solid wire dia ? Also I am not sure if the inductance would be the 
>same from a plate to a wire anyway ?
>
>Trying to keep inductance and resistance down to a minimum. Even though 
>copper tube is the norm, I am wondering if 50mm of copper sheet will greatly 
>reduce the inductance and resistance ?  I think it has to ? The larger sheet 
>area should work better at higher frequency's due to skin effect ?
>
>I know some will say its not worth going for copper plate over copper tube, 
>though I am using low voltages so even a few milliohms can cause a serious 
>reduction in power. Inductance I want to keep low also. I calculated at 10V 
>input the turn off spike would be 2KV into about 2uH. Really want to keep it 
>below 1uH if possible. Though like I said I am not sure if plate will be 
>better or worse then wire. I think overall it should be better ?
>
>Cheers,
>Chris
>
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