Re: DC solution to neon xfmr problems? (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Thu, 1 Nov 2007 09:04:18 -0700
From: Clive Hansen <mrclivehansen@xxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: DC solution to neon xfmr problems? (fwd)

I may be wrong, but I relieve that a safety gap would solve this problem.

On 11/1/07, Tesla list <tesla@xxxxxxxxxx> wrote:
>
>
> ---------- Forwarded message ----------
> Date: Thu, 1 Nov 2007 00:54:30 +0000
> From: "Lau, Gary" <Gary.Lau@xxxxxx>
> To: 'Tesla list' <tesla@xxxxxxxxxx>
> Subject: RE: DC solution to neon xfmr problems? (fwd)
>
> I don't believe that the thing that is killing so many NST's and obit's is
> spikes.  The problem is that many neophytes don't realize that the voltage
> developed on an NST secondary can easily exceed the faceplate rating of
> the xfmr if the spark gap is opened up too wide, through mains resonant
> rise.  Too many beginners see the spark gap as just one more parameter to
> tweak for maximum performance.
>
> To your point, the problem of mains resonant rise would also be eliminated
> by rectifying the xfmr.  But I also suspect that mains resonant rise,
> coupled with ferroresonance, may sometimes provide a significant
> performance boost, so while more durable, a rectified system may not
> perform as well as a conventional AC system.
>
> Regards, Gary Lau
> MA, USA
>
> > From: HomerLea@xxxxxxx
> > To: tesla@xxxxxxxxxx
> > Subject: DC solution to neon xfmr problems?
> >
> > It has been about 50 years since I built a Tesla coil, but hope to build
> > another in the next year. I have neon sign xfmrs and obits to work with
> and don't
> > want to burn them out as I hear is a problem. My question is, why can't
> I just
> > put the xfmr output through a bridge rectifier or even doubler to keep
> > problem spikes from coming back to the xfmrs?
> > Jim Heagy
>
>
>
>