Re: toroid question

["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>

Tesla list wrote:
 
> The resistance in series with the "shorted turn" is very low, and so
> very little energy is dissipated. Other consideration is that the
> coupling between the secondary and this "extra coil" is small.
> It just causes a small change in the secondary inductance.
> 
> Antonio Carlos M. de Queiroz

	I have tried to measure the change in inductance and loss resistance
caused by mounting a toroid a couple of inches above a 3.2" diameter by
15" long secondary, and could detect any at all.  Certainly the effect
was much less than 1 percent and hence negligible.

Ed