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Re: first post (fwd)



---------- Forwarded message ----------
Date: Wed, 15 Aug 2007 14:52:06 -0500
From: Terri Neeley <neeley_111@xxxxxxx>
To: tesla@xxxxxxxxxx
Subject: Re: first post (fwd)


It was a mistake.  Sorry.  Ok so 3 strings of 8 of the .15microF would be
fine then.  Thx for all the input.  Thx for filling me in on the rf
current thing Jim.  I'll do some research on that.

Garry Neeley

________________________________________________________________________________

      From:  "Tesla list" <tesla@xxxxxxxxxx>
      To:  tesla@xxxxxxxxxx
      Subject:  Re: first post (fwd)
      Date:  Wed, 15 Aug 2007 12:40:53 -0600 (MDT)
      >
      >---------- Forwarded message ----------
      >Date: Wed, 15 Aug 2007 13:42:55 -0500
      >From: Terri Neeley <neeley_111@xxxxxxx>
      >To: tesla@xxxxxxxxxx
      >Subject: Re: first post (fwd)
      >
      >
      >I don't know what I was thinking.  I need .066microF so 3
      strings of 7
      >would work out fine right?
      >
      >Garry Neeley
      >
>______________________________________________________________________________
      _
      >
      >       From:  "Tesla list" <tesla@xxxxxxxxxx>
      >       To:  tesla@xxxxxxxxxx
      >       Subject:  Re: first post (fwd)
      >       Date:  Wed, 15 Aug 2007 11:59:45 -0600 (MDT)
      >       >
      >       >---------- Forwarded message ----------
      >       >Date: Wed, 15 Aug 2007 13:00:10 -0500
      >       >From: Crispy <crispy@xxxxxxxxxxx>
      >       >To: Tesla list <tesla@xxxxxxxxxx>
      >       >Subject: Re: first post (fwd)
      >       >
      >       >Hmm, by my calculations, you'd only need 7 per
      string.  The
      >       caps are
      >       >rated at 150nF, 2kV each, if I recall.  9000Vrms is
      about
      >       12730V peak.
      >       >Divided by 2000V per cap and rounded up comes to 7
      caps per
      >       string.
      >       >This alone is more than the 15nF you want.  If you
      want
      >       exactly 15nF,
      >       >you can use one string of 10, and have a healthy
      voltage
      >       margin as well.
      >       >On ebay, the ebay store TeslaStuff sells lots of 12
      of these
      >       caps for
      >       >under $50.
      >       >
      >       >Hope this helps,
      >       >Chris
      >       >
      >       >On Wed, 2007-08-15 at 11:05 -0600, Tesla list wrote:
      >       > > ---------- Forwarded message ----------
      >       > > Date: Wed, 15 Aug 2007 12:07:09 -0500
      >       > > From: Terri Neeley <neeley_111@xxxxxxx>
      >       > > To: tesla@xxxxxxxxxx
      >       > > Subject: Re: first post (fwd)
      >       > >
      >       > >
      >       > > Exactly what Mr. Lux said.  Many people have used
      these
      >       transformers with
      >       > > success and I thought it could be a cheaper
      alternative
      >       than stacking
      >       > > nst's.  The transformers I have are 4500v 450ma
      btw.  So
      >       if you use Jim
      >       > > Lux's config you essentially split the current
      between
      >       the two and double
      >       > > the voltage.  I will be using a synchronous
      rotary
      >       gap.  My question is
      >       > > are there really any alternatives to
      CD942's?  What about
      >       wima fkp1's?
      >       > > They seem to be much cheaper considering the cd's
      are
      >       over 3 bucks a
      >       > > piece and I would need 6 strings of 18 of the
      .015mF for
      >       this coil.  I'm
      >       > > just very new to this and I really just want a
      cap or mmc
      >       that will be as
      >       > > reliable as reasonably expected to be.  Any
      really good
      >       alternatives
      >       > > besides the CD's?  There gonna set me back at
      least 350$
      >       for them.
      >       > >
      >       > > Garry Neeley
      >       > >
      >       >>______________________________________________________________________________

      >
      >       > >
      >       > >       From:  "Tesla list" <tesla@xxxxxxxxxx>
      >       > >       To:  tesla@xxxxxxxxxx
      >       > >       Subject:  Re: first post (fwd)
      >       > >       Date:  Wed, 15 Aug 2007 10:23:54 -0600
      (MDT)
      >       > >       >
      >       > >       >---------- Forwarded message ----------
      >       > >       >Date: Wed, 15 Aug 2007 09:16:18 -0700
      >       > >       >From: Jim Lux <jimlux@xxxxxxxxxxxxx>
      >       > >       >To: Tesla list <tesla@xxxxxxxxxx>,
      >       tesla@xxxxxxxxxx
      >       > >       >Subject: Re: first post (fwd)
      >       > >       >
      >       > >       >At 08:38 AM 8/15/2007, Tesla list wrote:
      >       > >       >
      >       > >       > >---------- Forwarded message ----------
      >       > >       > >Date: Wed, 15 Aug 2007 08:29:08 -0700
      >       > >       > >From: huil888 <huil888@xxxxxxxxxxxx>
      >       > >       > >To: Tesla list <tesla@xxxxxxxxxx>
      >       > >       > >Subject: Re: first post (fwd)
      >       > >       > >
      >       > >       > >Terri -
      >       > >       > >
      >       > >       > >First question is about your HV power
      supply
      >       transformers.
      >       > >       These are
      >       > >       > >nominally rated at 4500 volts RMS,
      400ma. I
      >       assume that
      >       > >       you intend to
      >       > >       > >connect them in series to obtain 9KV RMS
      AC
      >       output?
      >       > >       Peak-to-peak voltage
      >       > >       > >will be about 12.7KV.  Are you sure that
      the
      >       transformer
      >       > >       insulation will
      >       > >       > >withstand this? One good flashover at
      this much
      >       current
      >       > >       may destroy the
      >       > >       > >transformers.
      >       > >       > >
      >       > >       > >How will you limit secondary the current
      to
      >       225ma?
      >       > >       >
      >       > >       >I think that the plan is to cascade the
      two
      >       transformers in
      >       > >       series,
      >       > >       >using the 600V tertiary winding, so the
      "high"
      >       transformer's
      >       > >       core is
      >       > >       >floated at 4500V.
      >       > >       >
      >       > >       >These things have a fair amount of leakage
      >       inductance, so
      >       > >       the output
      >       > >       >current is limited.
      >       > >       >
      >       > >       >
      >       > >       >
      >       > >       >I built a similar cascade, using 4
      transformers:
      >       two
      >       > >       cascades, with a
      >       > >       >center ground, and it's in many respects
      like a
      >       giant NST.
      >       > >       >
      >       > >       >
      >       > >       >
      >       > >       >
      >       > >
      >       > >
      >       >>______________________________________________________________________________

      >
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      >
      >
>______________________________________________________________________________
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