RE: Output of Neon Sign Transformers (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Mon, 18 Jun 2007 16:23:09 +0000
From: Nicolas Alstrup <n_alstrup@xxxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: RE: Output of Neon Sign Transformers (fwd)

By the way,

The caps I am using is EPCOS Metallized Polypropylene Film Capacitors (MKP)
And the Transformer has two terminals, so it must be 8Kv.

Sincerely Gryphon


>From: "Tesla list" <tesla@xxxxxxxxxx>
>To: tesla@xxxxxxxxxx
>Subject: RE: Output of Neon Sign Transformers (fwd)
>Date: Mon, 18 Jun 2007 08:16:41 -0600 (MDT)
>
>
>---------- Forwarded message ----------
>Date: Mon, 18 Jun 2007 10:12:41 -0400
>From: "Lau, Gary" <Gary.Lau@xxxxxx>
>To: Tesla list <tesla@xxxxxxxxxx>
>Subject: RE: Output of Neon Sign Transformers (fwd)
>
>Your NST is typically referred to as an 8kV/50mA, secondary mid-point 
>grounded unit.  There are two high voltage terminals, and the voltage from 
>the case to either of them is 4kV, and between the two terminals is 8kV.
>
>You cannot tie the two winding in parallel, as they would be out of phase.  
>You need to use them in series, for 8kV.  This is why your MMC blew - If 
>you just used 5 caps per string, it would only be rated for 5kV, and you 
>were applying at least 8kV x 1.414 = 11.3kV to it.
>
>What kind of caps are these?
>
>Regards, Gary Lau
>MA, USA
>
>
>
> > Date: Mon, 18 Jun 2007 11:27:14 +0000
> > From: Nicolas Alstrup <n_alstrup@xxxxxxxxxxx>
> > To: tesla@xxxxxxxxxx
> > Subject: Output of Neon Sign Transformers
> >
> > Hello,
> >
> > I have found two identical neon sign transformers, that I am trying to 
>build
> > a Tesla Coil Around, but I am experiencing some difficulties..... My 
>main
> > problem is that I can't figure out my transformer output, and my MMC
> > capacitors keeps blowing.....
> >
> > The Transformers are from Neoncomp, www.neoncomp.fi, type "N 50/8 RE" 
>and
> > here is what it says on them regarding the secondary:
> >
> > Us = 4000V - E - 4000V
> > Is = 50 mA
> > Pp = 520VA
> >
> > On the homepage it is described as a 2x4000V transformer, but does that
> > means it gives out 8000V?
> >
> > I have parallel connected them, and beleive that should give a output of
> > 4000V and 100mA. Right?
> > I have used 40 x 0.047uF 1000V capacitors, 5 in string, 8 strings
> > parralell.. This should give me 0,0752uF, and 5000V potential, but the
> > capacitors keep blowing... Any Ideas, thoughts regarding the 
>transformers?
> >
> > Thank you very much, sincerely Gryphon
> >
> > _________________________________________________________________
> > Få 250 MB gratis lagerplads på MSN Hotmail:  http://www.hotmail.com
> >
> >
>
>
>

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