Re: Flat secondary measurements

["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 Paul -

Tesla list wrote:

> Original poster: "Paul Nicholson by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <paul-at-abelian.demon.co.uk>
>
> Inductance Contest
> ------------------
> You have 426.72 metres (1400 feet) of 24 awg (0.51055mm diam) wire.
>
> What's the highest inductance you can achieve with it?
>
> Coils must be single layer, with concentric windings.  The minimum
> allowable pitch is 0.6382 mm (0.025125 inches) which corresponds to
> a spacing ratio of 0.8.
>
> Answers direct.

My answer (right or wrong) is 32.7mH rounding turns to nearest integer, or
when the inner radius is as
close to zero as mechanically possible (I used .51055mm).

Or when the average width is minimum. Everything is closer together, compact.

Take care,
Bart