Re: Measuring self-capacitance directly (Re: flat secondary)

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>" <evp-at-pacbell-dot-net>

> Ok, but a meter could be designed to make valid measurements
> in this way. An inductance meter can measure an inductance
> with a capacitance in parallel, by using only low-frequency
> signals in the tests. A meter using high-frequency signals
> could measure a capacitance, even with an inductance in
> parallel with it.
> 
> Antonio Carlos M. de Queiroz

	Can't see how the "high-frequency" capacitance is really the
distributed capacitance of the coil.  Seems to me measuring the
low-frequency inductance and the self-resonant frequency is a much
better way to go, and the one that's shown in my "Radio Frequency
Measurements".  Has always worked for me and the results agree with a
couple of percent of those calculated using Medhurst's data.

Ed