Re: How To Measure NST Coupling

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Dmitry (father dest)" <dest@xxxxxxxxxxx>

Hallo Barton,

Thursday, March 02, 2006, 10:57:20 AM, you wrote:

> Rs = 4620 ohms
> Rp = 0.48 ohms
> Ls = 4185.5 H
> Lp = 0.4052 H

HECK! i forgot (again) that Z=sqrt(X^2+R^2), not just X+R, so in first
approximation at coupling of 0.94 error would be not the
Rs/(Ktr^2*377*Lp*(1-Kcoupling^2)=2.5%, but
sqrt(1+(2.5%)^2)=0.031%
sorry % )

> measured turns ratio is 101.64

to _measure_ turns ratio you must unwind both pri and sec, and
even in that case the turns ratio can be integer only % )

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Let the bass kick! =:-D