RE: Egg of Columbus

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Cameron B. Prince" <cplists@xxxxxxxxxx>

Hi Gomez,

I don't think this is off topic at all... This is a Tesla list and it was a
Tesla invention. That being said, I, like you, have questions about the
construction.

The versions I saw at the museum and memorial both appeared to have large
toroidal cores. The one at the museum was smaller, but it appeared to use
the same core that is found in the Superior Electric 1156 and 1256 variacs.

It was unclear if the core was split and I also don't understand the
windings as there were four connections. I also don't know if there is some
sort of driver circuit or if it is simply powered by straight AC.

If anyone out there could help us both, I'm sure it would be greatly
appreciated.

Thanks,
Cameron

> -----Original Message-----
> From: Tesla list [mailto:tesla@xxxxxxxxxx]
> Sent: Tuesday, September 12, 2006 12:40 PM
> To: tesla@xxxxxxxxxx
> Subject: Egg of Columbus
>
> Original poster: Gomez Addams <gomezaddams@xxxxxxxxx>
>
> I realize this is a wee bit off-topic for the list, but if someone
> who understands the question thoroughly would reply to me off-list,
> I've very much appreciate it.
>
> I'm curious about the "Egg of Columbus".  If the windings are on a
> toroidal form, wouldn't most of the magnetic field be enclosed?  Does
> the thing work solely on "leaking" magnetic field?  And if so, isn't
> that awfully inefficient?  What am I missing?
>
>   - Bill "Gomez" Lemieux