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Re: dual mot tc (fwd)

To: tesla@xxxxxxxxxx
Subject: Re: dual mot tc (fwd)
From: "Tesla list" <tesla@xxxxxxxxxx>
Date: Mon, 8 Oct 2007 22:09:10 -0600 (MDT)
Delivered-to: testla@xxxxxxxxxx
Delivered-to: tesla@xxxxxxxxxxxxxxxx
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Resent-date: Mon, 8 Oct 2007 22:09:11 -0600 (MDT)
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---------- Forwarded message ----------
Date: Mon, 8 Oct 2007 20:55:51 -0700
From: Clive Hansen <mrclivehansen@xxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: dual mot tc (fwd)

Is there a formula for calculating the capacitance if using several wine
bottles (I am looking for around 5nf)

On 10/8/07, Tesla list <tesla@xxxxxxxxxx> wrote:
>
>
> ---------- Forwarded message ----------
> Date: Mon, 8 Oct 2007 11:43:02 -0700 (PDT)
> From: G Hunter <dogbrain_39560@xxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: dual mot tc (fwd)
>
> No problem.  Glass bottles and NSTs go together well.
> 12oz (355ml) beer bottles are good for 750-900pF each.
> A 6-pack is worth roughly 5nF.  A 12-pack will get
> you 10nF.  These can stand up to any NST, including
> the 15kv units.  For a "dry" cap, try wrapping the
> bottles in kitchen foil.  You can stick it on with
> spray glue.  Just roll the bottle up in foil, then
> smooth it down using the back of a big spoon.
>
> I've assembled caps like this as big as 80nF
>
> http://hot-streamer.com/greg/bottle.htm
>
> and gotten satisfactory performance from them.  They
> are not in the same league as a commercial plastic
> film pulse cap, but they are very inexpensive.
>
> Cheers,
>
> Greg
>
> --- Tesla list <tesla@xxxxxxxxxx> wrote:
>
> >
> > ---------- Forwarded message ----------
> > Date: Sun, 7 Oct 2007 13:40:06 -0700
> > From: Clive Hansen <mrclivehansen@xxxxxxxxx>
> > To: Tesla list <tesla@xxxxxxxxxx>
> > Subject: Re: dual mot tc (fwd)
> >
> > I think I have decided to possibly steer away from
> > the mots and instead use
> > an nst because of the lower output current for
> > safety. Does anyone see this
> > causing problems with the previously mentioned
> > capacitor setup?
> >
> > On 10/7/07, Clive Hansen <mrclivehansen@xxxxxxxxx>
> > wrote:
> > >
> > > Okay, from what I can gather several glass bottles
> > filled with brine with
> > > copper tubes inside them sitting a container
> > filled with brine would
> > > probably work the best for what I have access to.
> > That is probably what I
> > > will go with then.
> > >
> > > On 10/6/07, Tesla list <tesla@xxxxxxxxxx> wrote:
> > > >
> > > >
> > > > ---------- Forwarded message ----------
> > > > Date: Sat, 6 Oct 2007 16:49:04 +1000
> > > > From: A. Wang 2007 T476202
> > <tangara_02@xxxxxxxxxxx>
> > > > To: Tesla list < tesla@xxxxxxxxxx>
> > > > Subject: RE: dual mot tc (fwd)
> > > >
> > > >
> > > > Sounds fine to me, though you might need a few
> > for a decent tank
> > > > capacitance value. That's something I need to
> > try making meself. If you
> > > > can, it is slightly more preferable to try to
> > get a commercial pulse
> > > > capacitor, MMC, or doorknobs. But otherwise
> > bottle capacitors work
> > > > better
> > > > than some other commercial capacitors.
> > > >
> > > > Good luck with your coil,
> > > >
> > > > A.Wang 2007
> > > >
> >
> _____________________________________________________________
> > > >
> > > > "If you do nothing, nothing will go wrong"
> > > >
> > > > Bean- The Ultimate Disaster Movie
> > > >
> > > > > Date: Fri, 5 Oct 2007 11:17:38 -0600
> > > > > From: tesla@xxxxxxxxxx
> > > > > To: tesla@xxxxxxxxxx
> > > > > Subject: Re: dual mot tc (fwd)
> > > > >
> > > > >
> > > > > ---------- Forwarded message ----------
> > > > > Date: Fri, 5 Oct 2007 07:37:05 -0700
> > > > > From: Clive Hansen < mrclivehansen@xxxxxxxxx>
> > > > > To: Tesla list <tesla@xxxxxxxxxx>
> > > > > Subject: Re: dual mot tc (fwd)
> > > > >
> > > > > I think I will be using caps made from a 2
> > liter plastic bottle filled
> > > > with
> > > > > salt water with a copper pipe suspended in it
> > and tin foil covering
> > > > the
> > > > > outside of the bottle. Does anyone think that
> > this would work
> > > > acceptably?
> > > > >
> > > > > On 10/4/07, Tesla list < tesla@xxxxxxxxxx>
> > wrote:
> > > > > >
> > > > > >
> > > > > > ---------- Forwarded message ----------
> > > > > > Date: Fri, 5 Oct 2007 15:12:30 +1000
> > > > > > From: A. Wang 2007 T476202 <
> > tangara_02@xxxxxxxxxxx>
> > > > > > To: Tesla list <tesla@xxxxxxxxxx>
> > > > > > Subject: RE: dual mot tc (fwd)
> > > > > >
> > > > > >
> > > > > > Don't even bother thinking about the MO
> > caps. They have high losses
> > > > at
> > > > > > 500Hz-ish, let alone RF. If you can, get
> > some tinfoil and projector
> > > > > > slides, and you can build a plate capacitor.
> > Otherwise, your plan is
> > > > > > pretty much fine as i see it. I went with a
> > MOT coil myself.
> > > > > >
> > > > > > A.Wang 2007
> > > > > >
> >
> _____________________________________________________________
> > > > > >
> > > > > > "If you do nothing, nothing will go wrong"
> > > > > >
> > > > > > Bean- The Ultimate Disaster Movie
> > > > > >
> > > > > > > Date: Thu, 4 Oct 2007 22:43:27 -0600
> > > > > > > From: tesla@xxxxxxxxxx
> > > > > > > To: tesla@xxxxxxxxxx
> > > > > > > Subject: RE: dual mot tc (fwd)
> > > > > > >
> > > > > > >
> > > > > > > ---------- Forwarded message ----------
> > > > > > > Date: Fri, 5 Oct 2007 00:32:40 -0400
> > > > > > > From: Scott Bogard <
> > teslas-intern@xxxxxxxxxxx>
> > > > > > > To: Tesla list <tesla@xxxxxxxxxx>
> > > > > > > Subject: RE: dual mot tc (fwd)
> > > > > > >
> > > > > > >
> > > > > > > Clive,
> > > > > > >      A few suggestions, wire your MOTs in
> > series/anti-parallel
> > > > > > > configuration, this means have the two MOT
> > cores wired together
> > > > with a
> > > > > > > ground (like a center tap grounded NST)
> > and wire the primaries in
> > > > > > > parallel.  If you cannot draw any arcs
> > between the two HV outs,
> > > > then
> > > > > > > reverse polarity of only one of MOT
> > primaries.  1/4 cu tubing is
> > > > fine.
> > > > > > > The advantage of this is that the MOTs are
> > working at their
> > > > ordinary
> > > > > > > voltage ratings, and oil is not necessary
> > (they also run quieter
> > > > this
> > > > > > way,
> > > > > > > as their noise cancels each other out,
> > kind of cool).  18AWG wire
> > > > is
> > > > > > kind
> > > > > > > of big, unless you plan on building a big
> > secondary, like 12-in
> > > > > > diameter,
> > > > > > > (I assume you plan on using 18 AWG "magnet
> > wire" correct?).  Three
> > > > > > segment
> > > > > > > spark gap should be fine if designed
> > properly, I cannot help you
> > > > there,
> > > > > > > never had good luck with multi-segment
> > gaps, I went strait to a
> > > > rotary
> > > > > > > gap.  You cannot use MO caps for a tank
> > cap, they will be terribly
> > > >
> > > > > > > inefficient, and I've read about them
> > blowing up in TC use (you
> > > > cannot
> > > > > > > believe everything you read however,
> > perhaps someone on the list
> > > > can
> > > > > > > verify or discredit this).  Your best bet
> > would be a proper MMC
> > > > with CD
> > > > > > > caps, or if you are really strapped for
> > funds (like me), you could
> > > > build
> > > > > > a
> > > > > > > cap the old fashioned way, check the
> > archives if you are
> > > > interested.  I
> > > > > > > hope this helps, good luck. Scott Bogard.
> > > > > > >
> > > > > > > > Date: Thu, 4 Oct 2007 20:39:01 -0600
> > > > > > > > From: tesla@xxxxxxxxxx
> > > > > > > > To: tesla@xxxxxxxxxx
> > > > > > > > Subject: dual mot tc (fwd)
> > > > > > > >
> > > > > > > >
> > > > > > > > ---------- Forwarded message ----------
> > > > > > > > Date: Thu, 4 Oct 2007 17:13:47 -0700
> > > > > > > > From: Clive Hansen
> > <mrclivehansen@xxxxxxxxx>
> > > > > > > > To: Tesla list <tesla@xxxxxxxxxx>
> > > > > > > > Subject: dual mot tc
> > > > > > > >
> > > > > > > > Hello,
> > > > > > > >      I am thinking of building a coil
> > using two mots in series
> > > > under
> > > > > > oil
> > > > > > > > with an inductive ballast to limit
> > current. For a tank cap, I
> > > > want to
> > > > > > use
> > > > > > > > two or three microwave oven caps in
> > series. My spark gap will be
> > > > a
> > > > > > three
> > > > > > > > segment gap quenched by a leaf blower. I
> > want to use 1/4in
> > > > copper
> > > > > > piping for
> > > > > > > > the primary and 18 gauge wire for the
> > secondary. I must use
> > > > microwave
> > > > > > oven
> > > > > > > > parts because they are very cheap. If
> > anyone sees any problems
> > > > with
> > > > > > this
> > > > > > > > setup please let me know.
> > > > > > > >
> > > > > > > > Thanks,
> > > > > > > > Clive
> > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > > >
> >
> _________________________________________________________________
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> >
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