Re: does the terminal have to be ontop of the secondary?

["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 Alex,

Tesla list wrote:

> Original poster: "Alexander Rice by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <ajjrice-at-yahoo-dot-com>
>
> as a related thought -
>
>     if i was to have three (say) toroids, as many large coils do, if you
> were to have a gap between each toroid could you increase its capacitance
> and make it 'seem' (from a high voltage/field distribution POV)   like one
> larger toroid? Someone could try this on a field simulation

Yes, but the top capacitance effect is much less than you might think with
2 or more stacked
toroids. I measured Ctop on a stacked toroid configuration a while back and
there was a 50% decrease
from the 2 toroids isolated C value. Typically, a single toroid will
measure between 90% and 60%
depending on the coil size, toroid size, height or placement to coil, and
proximity to eachother
just to name a few of the factors. Stacked toroids appear to be equivalent
to a single toroid
isolated C value when both toroids are near the same size (and there is
little change between the
distance or spacing between toroids).

Take care,
Bart