Re: How To Measure NST Coupling

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>

Hi Dmitry,

Regarding L and R measurements. I recently built a voltage divider 
for HV measurements. Works nice and complete with calibration 
potentiometer prior to measurements. Anyway:

Rs = 4620 ohms
Rp = 0.48 ohms
Ls = 4185.5 H
Lp = 0.4052 H
measured turns ratio is 101.64

These numbers are as of last night with finer detailing of my NST. In 
previous simulations, Cres was 78 Hz for a 13.3nF cap (which is 
normally the Cres value for a 12/30 NST at 60 Hz). Since the finer 
detail of L, R, and k measurements, Cres is now simulating at 59.6 Hz 
(much better!).

Take care,
Bart

Tesla list wrote:

> Original poster: bartb@xxxxxxxxxxxxxxxx
> Hi Dmitry,
>
> > Original poster: "Dmitry (father dest)" <dest@xxxxxxxxxxx>
> >
> > how could you know that it`s fine - have you compared it with any other
> > 100% valid method? : )
>
> It is.
>
> >  > Here's a graph of the data in case anyone is interested.
> >  > http://www.classictesla.com/temp/k_nst1260.gif
> >
> > wow - 3 digits after the decimal point - do you really believe that this
> > method can give such accuracy? % )
>
> 3 decimals on that particular measurement is fine. My simulations were
> off, and I troubleshot back to NST coupling as the problem. I was using
> 0.955 as a generalization. I calc'd that it should be 0.93, and this is
> why I measured it to verify (it was very close).
>
> > can you post such parameters as Rsec and Lsec of your nst? : )
>
> Yes, but I'll get back to you on that. I'm at work and don't have the
> numbers with me.
>
> Take care,
> Bart