RE: Photos of 8 kVA twin coil (fwd)

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Original poster: List moderator <mod1@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Wed, 23 May 2007 10:31:30 -0700
From: Bill Fuller <bill@xxxxxxxxxxx>
To: 'Tesla list' <tesla@xxxxxxxxxx>
Subject: RE: Photos of 8 kVA twin coil (fwd)

Greg,

Very nice coil! I was at the faire on Saturday but only saw a small coil in
operation. I missed out...

Did you make those toroids or buy them? I've been looking to make some very
similar for my coil. I can't seem to find a decent ring roller for a decent
price. What material did you use for the tubes?

Thanks!

Bill

-----Original Message-----
From: Tesla list [mailto:tesla@xxxxxxxxxx]
Sent: Wednesday, May 23, 2007 7:17 AM
To: tesla@xxxxxxxxxx
Subject: Re: Photos of 8 kVA twin coil (fwd)

Original poster: List moderator <mod1@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Wed, 23 May 2007 06:57:01 +0200
From: Finn Hammer <f-h@xxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Photos of 8 kVA twin coil (fwd)

Greg,

Nice to see the scaled down ALF twins in action. Cool, rugged secondary`s!.

A couple of questions:

Have you got breakout points on those gorgeous toroids?.

Are you gating 2 separate, identical coils at the same time, so that
they are free to settle on each their own frequency, or are the primary
coils connected in a common loop, to ensure solid anti-phase operation?.

Am I seeing a 1-turn primary?.

Cheers, Finn Hammer



Tesla list skrev:
> Original poster: List moderator <mod1@xxxxxxxxxx>
>
>
>
> ---------- Forwarded message ----------
> Date: Tue, 22 May 2007 00:32:08 -0800
> From: Greg Leyh <lod@xxxxxxxxxxx>
> To: tesla@xxxxxxxxxx
> Subject: Photos of 8 kVA twin coil
>
> Hi All,
>
> I didn't take any photos of the Maker Faire event but here's a few that
> have surfaced on the Web, which are usually better quality than I could
> produce anyway.  This was a daytime event, and though the ambient
> lighting washed out most of the finer streamers, the event offered an
> opportunity to shake down the system for the first time and explore some
> of the interesting twin coil dynamics.
>
> It was a pleasant change of pace to setup and run a simple coil system
> where everything is hand-carryable. The two coil structures stand about
> 10ft high and 18ft center to center.
>
> Here's the power supply and timing controls:
> http://tinyurl.com/2gvrg6
>
> Mulling over waveforms with a few visitors:
> http://tinyurl.com/25ejvr
>
> Here's a pic from the one time we were able to dim a few courses of
lights:
> http://tinyurl.com/27dbbm
>
> Here's a closer view of the arc structure:
> http://tinyurl.com/2btyup
>
> And here's a video clip of the coils operating.  Again, sorry about the
> ambient light!
> http://www.youtube.com/watch?v=zQ2oLQ2ZEnc
>
>
>
>
>
>