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Re: TC Characteristics Q's

Thanks Ruud for your response.  Yes you did answer my questions and it was
appreciated.  Thanks for taking the time to educate me.
I can't remember exactly where I saw the photo, but it was on the internet.
So, I will look for it if you wish and either send it to you or
send the URL.

Thanks again,
Jay


----- Original Message -----
From: Tesla List <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, April 22, 2000 10:25 AM
Subject: Re: TC Characteristics Q's


> Original Poster: "Ruud de Graaf" <rdegraaf-at-daxis.nl>
>
> Hi Jay,
>
> Your unbelief puzzles me, maybe I understand you wrong, but yes it doesn't
> really matter what form the top-capacitance is. At some potential there
will
> be ionization of surrounding air. This occurres mostly on the parts of the
> top-cap where the radius is the smallest. That's the reason that it must
> have a smooth surface. The reason for this is that sharp points and
surfaces
> with relatif small radius in general, has concentrated electrical field
> lines around them. Therefore the electrical forces are more powerful at
said
> surfaces and there is a greater change that one or more electrons are
> repelled or attracted from or to the top-cap.
> The result is that there arise ions (atoms or mulecules with an electrical
> charge) in the air.
> Those ions can also give away or lone an electron with the help of the
> electrical field lines from there neighbors. Eventually there is made an
ion
> path where the top-cap can discharge through: the arc. And this all has
> nothing to do with the scin effect! (BTW: most coilers prefer a toroid, a
> sphere is used mostly for electrostatic generators like the 'Van de
Graaff'
> generator) However a sphere on a TC can have some nice side effects...
>
> Now about your other question: magnetic fields inside the top-cap and the
> coils:
>
> 1. The more change of current in the less time, the bigger the magnetic
> field will be(B=dI/dt).
>
> 2. The surface of a sphere is pi*R^2, so the magnetic field will diminish
at
> least with a power of 2.
>
> 3. The more you spare, the bigger your present. ;-)
>
> Conclusions:
>
> With TC work you 'spare' (charge) normally only for 1/2 a 60 or 50 Hz
wave,
> because it is nice and impressive to have an almost continuous spark. With
a
> railgun you normally 'spare' longer, so the power supply has an easy job.
> Essential is the 'number of Joules' you spared, so high voltage and bigggg
> capacitors (E = 1/2C * V^2). So the electromagnetic forces for a railgun
are
> much bigger than for the average TC. There are reports that you can feel
the
> magnetic forces in your hand when hold above a small coil when a big cap
is
> discharging in it, but this seems to be harmless.
>
> The primary coil of the TC is the TC 'driver' and of course this is the
> place where the biggest magnetic fields will be. Deminishing with a power
of
> 2, so in the top-cap this field will not be so impressive anymore. That's
> the reason that relative long secondary coils aren't more productive then
> shorter one's. So, a man in the top-cap of an operating TC? YES! May I,
may
> I, please?
>
> I hope this all will answer more than it will contribute to the increasing
> number of questions you were talking about!
>
> Greetings from lovely and sunny Holland,
>
> Ruud de Graaf
>
>
>