Re: how many caps for a 1.5 KVA 14.4 KV transformer?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Mark Broker by way of Terry Fritz <teslalist-at-qwest-dot-net>" <mbroker-at-thegeekgroup-dot-org>

That is the correct URL.  However, our design charts are for NSTs and OBITs 
only.  Due to the extreme variability of PT and PDT systems, we chose not 
to "suggest" any designs.  There is a construction guide on our mmc site 
that is very helpful regardless of the size, or even if not using "Geek Caps."

FWIW, I wouldn't use fewer than 13 caps per string for a 14.4kV PT or PDT 
with an async gap.

Regards,

Mark Broker
Chief Engineer, The Geek Group


On Sun, 27 Jul 2003 20:31:01 -0600, Tesla list <tesla-at-pupman-dot-com> wrote:

>Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>" 
><dhmccauley-at-spacecatlighting-dot-com>
>
>
>Capacitor size strongly depends on what type of gap you are using (synch,
>asynch, static, etc...) and also what you will be ballasting your
>transformer with.  Don't just choose 0.0257uF just because my results seem
>to be pretty good.  If you are using an asynch gap, then capacitor
>size can be fairly flexible ranging from 0.01uF up to 0.04uF for a 14.4kv
>transformer set at about 3.5kVA.  However, synch gaps and static gaps
>are a completely different story.
>
>The geek group has calculators and design charts on their webpage.
>I believe the link is:
>
>http://www.thegeekgroup-dot-org/mmc
>
>The Captain
>
>
> > IF i go for .0257, how many rows (and how big should the rows be) of geek
> > group caps should i use? I was thinking along 2 strings of 14.
> >
> > Thanks
> > Adam
> > Tesla list <tesla-at-pupman-dot-com> wrote:
> > Original poster: "by way of Terry Fritz "
> >
> > I'm using the same potential transformer and getting 6 foot continous
> > streamers with occasional hits out to 7 foot.
> > My specifications are:
> >
> > 1.5kVA, 14.4kV Potential Transformer running at 3.0 to 3.5kVA
> > 0.0257uF capacitor (MMC)
> > Asynchronous spark gap
> >
> > The Captain
> >
> >
> >
> >  > I just completed a similar coil. I run a 1.5 kVA PT at 3.6 kVA with
> >  > inductive series ballast. I used a .05 MFD cap and I'm hitting solid 5
> > ft.
> >  > sparks on a 40 inch x 8.25 OD winding of 22 AWG 200 degree C. wire. I'm
> >  > running asynchro gap at 173 bks/sec. Topload is 24 x 6 inch toroid.
> >  >
> >  > When I finish the coeff. of coupling adjustments next week I hope to
>gain
> > 6
> >  > inches more spark.
> >  >
> >  > Dr. Resonance
> >  >
> >  > Resonance Research Corporation
> >  > E11870 Shadylane Rd.
> >  > Baraboo WI 53913
> >  > ----- Original Message -----
> >  > From: "Tesla list"
> >  > To:
> >  > Sent: Saturday, July 26, 2003 8:29 PM
> >  > Subject: how many caps for a 1.5 KVA 14.4 KV transformer?
> >  >
> >  >
> >  > > Original poster: "Adam Britt by way of Terry Fritz
> > "
> >  >
> >  > >
> >  > > How many geek group caps should i use for my 1.5 KVA 14.4 KV PT?
>Right
> >  > now,
> >  > > i am using a ballast of .9 ohms, but once i get my pfc caps, i will
> >  > > probally take that down to .8 or .7 so i can get around 2 KW out.
> >  > > Thanks
> >  > > Adam
> >  > >
> >  > >
>