Hey Terry, I have 2 copper coil toroids, one is 2,5" by 9" the other is 3"
by 9" that I would sell for $35 each plus $10 shipping.
Pictures on demand!
Doug
On Tue, Jun 9, 2020 at 2:50 PM Terry Oxandale <Toxandale@xxxxxxx> wrote:
> Thanks Carlos. I knew I'd seen some postings about it, but had no idea on
> where to begin to find them.
>
> -----Original Message-----
> From: Tesla <tesla-bounces@xxxxxxxxxx> On Behalf Of Antonio Queiroz
> Sent: Sunday, June 7, 2020 8:28 PM
> To: tesla@xxxxxxxxxx
> Subject: **External Email** Re: [TCML] Toroid efficiency tube vs spun
>
> Em 07/06/2020 18:17, Terry Oxandale escreveu:
> >
> >
> > I've seen various designs for toroid construction (spun, multiple
> tubes-loops, conductive film/covering, etc), and have yet to understand
> electrical differences in the traditional continuous-surface toroid, versus
> the multiple tubular-loop ones.
> > Assuming the same minor and major diameters between the two (or what one
> would consider that for the tubular one), I would think that variability
> exist in total capacitance or field differences between the two, especially
> in terms of the number and spacing of the individual tube-loops to each
> adjacent tube-loop. Does anyone have knowledge of the frequency/spacing
> relationship that would garner electrical equivalence between the two, or
> is that not feasible to say one could never perfectly match the other in
> terms of breakout/capacitance/field characteristics?
> > Terry
>
> The capacitances of a smooth toroid and of a toroid made with tubes, with
> the same outer shape, are almost identical. The breakdown voltage of a tube
> toroid is always smaller. There was some discussion about this in the list
> years ago, with simulations.
>
> Antonio Carlos M. de Queiroz
>
>
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