It seems from empirical data that the general rule of thumb, at least for fairly large coil systems, is that the top load’s minor diameter should closely match the diameter of the secondary coil and the top load’s major diameter should be pretty close to the length of the secondary coil.
David Rieben
Sent from my iPhone
> On May 26, 2019, at 11:48 AM, undisclosed recipient via Tesla <tesla@xxxxxxxxxx> wrote:
>
> Just curious…
> Has anyone noticed that the top-load outer ring diameter (top to bottom, not outer edge) matching the secondary diameter gives a better performance?
> I built a 6” diameter secondary and wondering if using 6” semi-rigid pipe will do better than the 4” i have built.
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