Re: [] conical secondary (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Sun, 17 Jun 2007 12:27:30 -0400
From: sheelite@xxxxxxx
To: tesla@xxxxxxxxxx
Subject: Re: [] conical secondary (fwd)


 The Electrotherapymuseum has really become a valuable collection, thanks and congratulations.
I was curious about the Kinraide photographs, particularly 0600_A.? Any idea how this was done?
thanks,
bobt



 

-----Original Message-----
From: Tesla list <tesla@xxxxxxxxxx>
To: tesla@xxxxxxxxxx
Sent: Sat, 16 Jun 2007 2:32 pm
Subject: Re: [] conical secondary (fwd)











---------- Forwarded message ----------
Date: Sat, 16 Jun 2007 15:19:45 -0400
From: BRIAN FOLEY <ka1bbg@xxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: [] conical secondary (fwd)

Hi, yes on pancake coil, see www.electrotherapymuseum.com/ for all kinds of
pancake stuff. cul brian f.
----- Original Message ----- 
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Saturday, June 16, 2007 11:33 AM
Subject: Re: [] conical secondary (fwd)


>
> ---------- Forwarded message ----------
> Date: Sat, 16 Jun 2007 11:34:58 -0400
> From: Marko Ruban <Marko@xxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: [] conical secondary (fwd)
>
> Just out of curiousity.... has anyone ever built a pancake TC secondary
> (in a home built system)?
>
>
> Tesla list wrote:
>
> ---------- Forwarded message ----------
> Date: Fri, 15 Jun 2007 19:25:06 -0700
> From: wysock@xxxxxxx
> To: Tesla list <tesla@xxxxxxxxxx>
> Cc: William.C.Wysock@xxxxxxxx
> Subject: Re: [] conical secondary (fwd)
>
> Hello Finn and all.
>
> It has been quite a while since I've written to the List.  This business
about conical
> secondary coils has caused me to now reply.  Finn, you are right.  winding
a conical
> secondary coil (regardless of size) from the small diameter end to the
large end
> is the only way to go.  There are techniques that one can use to support
the first
> 10 or so windings to be held in place as you continue to wind.
>
> Why use a conical coil form?  It has nothing to do with "old classic
designs".
> Rather, it has to do with placing the greatest amount of the secondary
coil
> inductance in closer proxcimity to the primary coil.  Think about it.
There is
> another advantage to a conical secondary coil design.  That is, reduced
> corona leakage stress at the top of the coil due to its shape (not
withstanding
> whatever "top load" electrode geometry you chose to use).
>
> Proof of how successful this secondary coil design can be?  Just look at
the
> Griffith Observatory coil on my web site at: http://www.ttr.com.  Also
please
> see the two one-to-one copies I've made of this coil: GPO-1 and GPO-2.
> There is also a (mini) version of GPO-2 that is linked to my web site.
> All these coils are up and running in a public venue setting.
>
> It interesting to note, that Tesla himself, in his first (medium size)
resonator coil
> at his 5th Ave. laboratory before it burned down, ( see the image of this
coil
> in the Beograd book "Tribute to Tesla"), and also his first secondary coil
design
> at Colorado Springs (in the book Colorado Springs Notes), were also
conical
> secondary coils.
>
> When it comes to design details of "what is the most efficient form of
r.f.
> resonator coil system"?  It goes like this:
>
> Least efficient (but most practical design to build): cylindrical
secondary.
> More efficient (but difficult to wind): conical secondary.
> Most efficient (but the hardest to build): pancake secondary and primary.
>
> My friend and colleague Jeff Behary, has been making many new
breakthroughs
> in this last area of investigation.  Please see his web site at:
> http://www.turnofthecenturyelectrotheripymusuem.com.
>
> Best regards,
> Bill Wysock.
>
> Date sent:      Fri, 15 Jun 2007 18:14:12 -0600 (MDT)
> From:           "Tesla list" <tesla@xxxxxxxxxx>
> To:             tesla@xxxxxxxxxx
> Subject:        Re: [] conical secondary (fwd)
> Forwarded by:   tesla@xxxxxxxxxx
> Date forwarded: Fri, 15 Jun 2007 18:14:14 -0600 (MDT)
>
>
>
> ---------- Forwarded message ----------
> Date: Fri, 15 Jun 2007 19:26:16 +0200
> From: Finn Hammer <f-h@xxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: [] conical secondary (fwd)
>
> All,
>
> I`d say that if you wind it from the skinny end towards the fat end,
> winding should not pose any problems at all. In fact, it should be
> easier, since the wire will tend to snuggle close together (good)
> without any special effort.
> The coilform could be made in any number of ways. I think I`l wait to
> decide how, until I need one.
>
> Guess this didn`t help much.
>
> Cheers, Finn Hammer
>
> Tesla list skrev:
>
>
> ---------- Forwarded message ----------
> Date: Fri, 15 Jun 2007 07:26:38 -0700
> From: Anthony R. Mollner <penny831@xxxxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: RE: [] conical secondary (fwd)
>
> Speaking of conical secondary, does anyone have any suggestions on making
> them and the coil form it self?
> Tony
>
>
>
>
>
>
>
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