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RE: [TCML] Bi-Polar TC
John,
That is a really nice coil! I am wanting to build a 1/2w but was going to
use a 2" plexi former. I think I will rethink that and use a 4-6" PVC form.
They seem to work so well and still can be in the house for winter fun! So
far none of my neighbors have tried to shoot exploding arrows at me.
They just tolerate me and assume I am eccentric which is certainly true!
Jim Mora
Please send me a list of the coils you are selling.
-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of tesla@xxxxxxxxxxxxxx
Sent: Sunday, February 15, 2009 12:12 PM
To: Tesla Coil Mailing List
Subject: [TCML] Bi-Polar TC
Here's a link to my Bi-Polar coil: http://www.tesla-coil.com/Bipolar.htm
I never considered grounding the center of the secondary. I designed and
built
this coil due to my neighbors firing arrows with explosives strapped to the
shaft at me (I'm not kidding, still have the al arrows) when I rolled my 1/4
wave out the front of the house to fire it up. I wanted something that
didn't
need a ground and could be used indoors, hence the argon filled acrylic
cabinet. It uses a Franceformer 9kV 50mA transformer.
Cheers,
John Cooper
www.tesla-coil.com
Quoting sparktron01@xxxxxxxxxxx:
> Shannon, all
>
> Working in the electrical power industry, EPDM cable is used almost
> universally
> in "non shielded" medium voltage applications. I have personally used 15kV
> insulation cable on 13.8 kV installations. Several references:
>
> http://en.wikipedia.org/wiki/EPDM_rubber
>
>
http://ieeexplore.ieee.org/Xplore/login.jsp?url=/iel4/5934/15805/00732949.pd
f?arnumber=732949
>
>
> http://www.awcwire.com/ProductTOC.aspx?id=EPDM
>
> Interesting history on high voltage insulation compounds and advancements
in
> EPDM type compounds.
>
http://www.indianapoliscompounds.com/downloads/EPR_cables_final%20version_4.
04.05.PDF
>
>
> http://www.electriccablecompounds.com/intranet/index.php?cmd=view_app&id=6
>
> I know the polymer is available as cable insulation, but was not aware it
is
> available
> in engineered "shapes" (plate, sheet, channels, angles, etc.)
>
> Regards
> Dave Sharpe, TCBOR/HEAS
> Chesterfield, VA. USA
>
>
> ----- Original Message -----
> From: "Weinhold Shannon L" <Shannon.L.Weinhold@xxxxxxxxxxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Sent: Thursday, February 12, 2009 5:44:22 PM GMT -05:00 US/Canada Eastern
> Subject: RE: [TCML] Bi-Polar TC
>
> Oh, hey, the guy that runs that site, Jeff, is a heck of a nice guy and
> very knowledgeable. I'm sure he'd be glad to share some information with
> you.
> I actually built mine after seeing his.
> He used hard EPDM rubber, 2 inch wide and 3/16" thick, to physically
> link his primary to the secondary. And he used copper ribbon for the
> primary windings, ran in between the layers of rubber.
> Apparently this particular type of rubber has excellent insulating
> properties.
>
>
> -----Original Message-----
> From: jhowson4@xxxxxxxxxxx [mailto:jhowson4@xxxxxxxxxxx]
> Sent: Wednesday, February 11, 2009 1:42 PM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] Bi-Polar TC
>
>
> oh no! some how the link I had was deleted. Here is the type I am trying
> to make.
> here is the link
> http://www.electrotherapymuseum.com/2007/TSC/index.htm
>
> ----- Original Message -----
> From: jhowson4@xxxxxxxxxxx
> To: "tesla list" <tesla@xxxxxxxxxx>
> Sent: Wednesday, February 11, 2009 9:41:55 AM GMT -05:00 US/Canada
> Eastern
> Subject: [TCML] Bi-Polar TC
>
>
> Hey Guys I was wondering if i could pick your brains about the bipolar
> Tesla coil. Specifically what the best way to mount the secondary Like
> this would be. I am planning on making a small 9kv 30ma coil over the
> summer
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