Re: coil design help

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

Original poster: DRIEBEN-at-midsouth.rr-dot-com 

Steve,

The only thing that would have to be changed to run with a .024 uFD as
opposed to a .097 uFD cap is the tap of the primary coil assuming that
you've built the coil with plenty of room for varying the primary tap.
Obviously, you would have to have considerably more primary inductance
(more primary turns) to tune in with a .024 uFD primary cap as opposed
to a .097 uFD primary cap. It would probably take about twice as many
primary turns to tune in with a .024 uFD primary cap as with a .097 ufd
cap since the inductance of a given coil increases as the square of the
number of turns and .097 is about 4x .024. So make sure that you design
your primary with plenty of turns (12 to 15 will probably suffice) and
you should be ok.

David Rieben
----- Original Message -----
From: Tesla list <tesla-at-pupman-dot-com>
Date: Friday, January 16, 2004 6:42 am
Subject: Re: coil design help

 > Original poster: "steve" <steve_vance-at-cablelynx-dot-com>
 >
 >>
 >  I'm still a little confused though. Let me word my question
 > another way.
 > If I wind my coil to resonate with the .097uf cap at 120bps with a
 > staticgap
 >  would it still work if I Change the cap to .024uf and swap the
 > gap for the
 > 480 bps ARSG?
 > Or does the coil need to be wound especially for the .024 cap?
 >
 > Steve
 >
 > ----- Original Message -----
 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > To: <tesla-at-pupman-dot-com>
 > Sent: Thursday, January 15, 2004 8:38 PM
 > Subject: Re: coil design help
 >
 >
 > > Original poster: DRIEBEN-at-midsouth.rr-dot-com
 > >
 > > Steve,
 > >
 > > I'm not real good on the math, but I believe that your 14.4 kV
 > pole pig
 > > wouldn't have time to fully charge a .097 uFD cap at around 480
 > bps. The
 > > .024 uFD would be a more practical size for such a high brake
 > rate as this
 > > size would allow the transformer to more fully charge the cap
 > between each
 > > discharge cycle. If you were running 120 bps sync, then I would
 > tend more
 > > toward the .097 uFD size cap.
 > >
 > > David Rieben
 > >
 > > ----- Original Message -----
 > > From: Tesla list <tesla-at-pupman-dot-com>
 > > Date: Thursday, January 15, 2004 7:12 am
 > > Subject: coil design help
 > >
 > >  > Original poster: "steve" <steve_vance-at-cablelynx-dot-com>
 > >  >
 > >  > I have a question about designing a coil. I am planning on
 > winding >  > a 6"
 > >  > coil to replace my 4.5"
 > >  > I am going to be running about 5KVA (14400V  350ma)
 > >  > The question I have is: I am going to be using a ARSG at around
 > >  > 480bps. Do
 > >  > I design the coil to match
 > >  > the actual capacitor I am going to use (.024uf) or the LTR cap
 > >  > size for a
 > >  > static gap(.097uf)?
 > >  >
 > >  > Thanks for any help
 > >  > Steve Vance
 > >  >
 > >  >
 > >  >
 > >  >
 > >
 > >
 > >
 >
 >
 >