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Re: pri. winding.
---------- Forwarded message ----------
Date: Mon, 13 Oct 1997 15:23:00 -0500
From: "DR.RESONANCE" <DR.RESONANCE-at-next-wave-dot-net>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: pri. winding.
To: MVacc90255
The flat archemedian spiral represents the best type of coupling for most
Tesla coils. Vertical primaries tend to over couple the sec coil and a
freq split occurs which diverts power into two separate frequencies which
are usually equally spread apart from the fundamental freq of the sec coil.
Most coils operate by propagating the energy into the lower part of the
sec coil and creating standing waves which transfer the energy in a
resonant mode to the upper terminal. There is no need to magnetically
couple the entire sec coil --- actually with over coupling the coil
operates worse than with proper coupling, usually a value of 0.18 to 0.2
for most systems.
The coil you saw was made a long time ago but not by Tesla.
DR.RESONANCE-at-next-wave-dot-net
----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: pri. winding.
> Date: Monday,October 13,1997 2:18 PM
>
>
>
> ---------- Forwarded message ----------
> Date: Mon, 13 Oct 1997 02:23:30 -0400 (EDT)
> From: MVacc90255-at-aol-dot-com
> To: tesla-at-pupman-dot-com
> Subject: pri. winding.
>
> I saw a wonderful sight at the Museum of Science and Industry in Chicago
a
> few months ago.A huge Tesla coil I think was built by the man himself.
What I
> am trying to figure out is why he made the pri. winding go out insted of
up.
> It was made with copper sheeting about an 1.5" tall with each turn
insulated
> with some sort of material. What would that do for the magnetic field.