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Re: An internal primary

Original poster: "Jim Lux" <jimlux@xxxxxxxxxxxxx>

One could adjust the coupling constant in several ways..
You'd also need some way to adjust the primary L (so as to tune the system,
unless you're doing an all driven, non resonant approach)

One is to put two primary windings inside the secondary and use a variable
transformer (air core, of course) to vary the currents. Perhaps something
like a goniometer?  Some horribly complex arrangement of capacitors and
rotating coils with variable coupling?

Make the internal primary/external secondary the second stage of a quadruple
resonance system (like a magnifier...)



----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Sunday, April 17, 2005 3:44 PM
Subject: RE: An internal primary


> Original poster: "Malcolm Watts" <m.j.watts@xxxxxxxxxxxx>
>
> On 15 Apr 2005, at 11:52, Tesla list wrote:
>
>  > Original poster: "Daniel A. Kline" <daniel_kline@xxxxxxxxxxx>
>  >
>  >
>  >
>  >  > -----Original Message-----
>  >  > From: Tesla list [mailto:tesla@xxxxxxxxxx]
>  >  > Sent: Friday, April 08, 2005 7:54 PM
>  >  > To: tesla@xxxxxxxxxx
>  >  > Subject: Re: An internal primary
>  >  >
>  >  >
>  >  > Original poster: Ed Phillips <evp@xxxxxxxxxxx>
>  >  >
>  >  > "So, a bipolar coil could maybe have an internal primary...?
>  >  > Dan K."
>  >  >
>  >  > How, pray tell, would you bring the connections out through the >
>  >  secondary? > > Ed
>  >
>  > Yeah...I thought of that later on. *laugh*
>  > Thanks for the reply.
>  > Dan K.
>
> You could build the secondary in two halves, mount the primary using
> holes near the bottom of one half to bring the leads out, then bond
> the secondaries together. I see doing it as being far from
> impossible. The secondaries do not have to have their base ends
> nested right up to each other. In fact a gap may be required to
> obtain a suitable coupling constant.
>
> Malcolm
>
>
>