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RE: dual mot tc (fwd)



---------- 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
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"If you do nothing, nothing will go wrong"
 
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> 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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