Re: toroid inner

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "S & J Young" <youngs-at-konnections-dot-net> 

Matt,

I recently measured the secondary resonant frequency for the same toroid
with a solid center disk and then with three thin aluminum support ribs and
could not detect a measurable difference.  I prefer using ribs as it makes a
lighter topload.

I believe the effect of a disk above the secondary will have negligible
magnetic coupling.

--Steve Y.

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, March 17, 2004 9:12 PM
Subject: Re: toroid inner


 > Original poster: Mddeming-at-aol-dot-com
 >
 > Hi John, All,
 >
 >      I was wondering how the capacitance of a pizza-pan-centered toroid
 > compared to that of a cross-bar toroid and each of them to that of a
 > bicycle-wheel-centered one? Seems like there would be a few pf difference.
 > No? Also, since the central "disk" is at least partially inside the
 > "internal" magnetic field of the secondary would its being made of steel
or
 > aluminum have different effects?
 >
 > Matt D.