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Re: 2 questions on resonance



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.īs NST(s) didnīt 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