Re: How to Tune a Flat Spiral Coil

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

Original poster: "Barton B. Anderson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla123-at-pacbell-dot-net>

Hi Dave -

Tesla list wrote:

> Original poster: "David Thomson by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <dave-at-volantis-dot-org>
>
> I have found that the primary capacitance is directly coupled to the
> secondary inductance.  So if you want to tune a flat spiral secondary, you
> have to figure your resonant frequency, measure the inductance of the
> secondary coil, and then choose a primary capacitor that will tune the
> circuit to the resonant frequency.

You lost me here. Are you saying that changing the primary inductance in
the tank won't tune the
coil?

Bart