Re: optimal aspect ratio

["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:
> 
> Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<jimlux-at-earthlink-dot-net>
> 
> >
> > You'll find this on my site http://www.alansharp.co.uk  under Maths and
> > Theory.
> >
> > But such a squat coil would not be optimal - it would breakdown because of
> > a high volts per turn ratio.
> > We also want to minimise the self capacitance of the coil - when this is
> > taken into account it turns out that for maximum Q the height should equal
> > the coil diameter.  But such a squat coil would not be optimal - it would
> > breakdown because of a high volts per turn ratio.
> >
> > Alan Sharp,
> >
> >
> 
> But, perhaps if you were to put it in a longer tube, full of oil or
> pressurized air?

	Why bother when the loaded Q of almost any conceivable shape, such as
the more convenient ones most guys use, is so low?

Ed