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Re: An internal primary

Original poster: "Malcolm Watts" <m.j.watts@xxxxxxxxxxxx>

On 7 Apr 2005, at 8:47, Tesla list wrote:

> Original poster: Harvey Norris <harvich@xxxxxxxxx>
> --- Tesla list <tesla@xxxxxxxxxx> wrote:
>  > Original poster: "K. C. Herrick" <kchdlh@xxxxxxx>
>  >
>  > Who was it who implemented an internal primary?
>  > Successfully, as I
>  > recall.  I'm thinking of trying that but perhaps
>  > that someone, or someone
>  > else, would warn me off.
>  >
>  > Ken Herrick
> I think Malcolm  in other long ago posts I instigated
> said that for the amp turns in the secondary to exceed
> the amp turns in the primary, the primary would appear
> relationship wise internal to the secondary... Geez
> dont want to start a word war there cuz my memory aint
> that great, but I seem to remember he  also said the
> issue may be irrevalent, because in most TC cases the
> amp turns on the secondary do not exceed the amp turns
> on the primary, thus again it is relegated to the
> category of modern myths.

Wow - you don't happen to have the original post handy do you? I
don't recall saying anything about A-T in the context of a Tesla Coil
itself. I *do* recall saying that if the geometries of the primary
and secondary in a TC were reversed you could do better than the
turns ratio voltage-wise but the result was useless since you
wouldn't get a great deal out of it before it started sparking in all
the wrong places.


I dont know how one could
> make such comparisons with a tesla coil, since the
> amount of amperage in oscillation is questionable with
> an arc that makes high frequency... However in my case
> I used a very high induction coil as the secondary,
> and did not use an arc gap to make high frequency, and
> it was not a tesla coil at all; but it was just a
> large secondary L value; and a smaller L value as a
> primary that sat inside the conical opening of the
> 20,000 multiturn secondary: and each primary and
> secondary was given DISCREET or separate C values:
> thus it was a set of tuned L and C values on each
> side, unlike the high frequency tesla secondary that
> has a capacity not so well defined as a discreet
> value, only its polar capacity as a top load plus the
> effects of its own intenal capacity. But here in this
> case both sides had separately well defined C values.
> Thus well defined L and C values on each side could
> also be operated as a source frequency air core
> transformer: NOT a high frequency transformer as is
> inclusive to discussions on tesla list. This
> particular air core transformer was operated from 480
> by an AC car alternator. In this case it was easy to
> compare the amp turns on the primary vs the amp turns
> on the secondary; because no high freq
> Tesla Research Group; Pioneering the Applications of Interphasal
> Resonances http://groups.yahoo.com/group/teslafy/