Re: 2 questions on resonance

To: tesla-at-pupman-dot-com
Subject: Re: 2 questions on resonance
From: "Reinhard Walter Buchner" <rw.buchner-at-verbund-dot-net> (by way of Terry Fritz <twf-at-verinet-dot-com>)
Date: Thu, 08 Apr 1999 12:27:59 -0600
Approved: twf-at-verinet-dot-com

Hi John,

>Yes, I meant to say it's the reactances that have to cancel for
>resonant charging.  The formula is:
>
>          C =  I/(2Pi*VF)
>
>     where:    I = total sum of faceplate rating of NST bank in ma
>                  V = faceplate RMS in kilovolts for NST bank
>                   F = incoming line freq in hertz
>                   C = microfarads
>                   Pi = 3.1416
>

All in all, I agree. However, my question is the definition
of "I". While Jon R.愀 NST(s) didn愒 seem to care about
the shunt removal (meaning the resocap size), I found
that I actually can tune the NST to the cap, by adjusting
the shunt. I think it is probably better to actually
measure the NST current (esp. if you are paralleling a
few), then just trust the faceplate values.

Coiler greets,
Reinhard