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Re: [TCML] Which Primary Circuit is Best?
Hi Brandon, Chris,
The first circuit you describe will not work at all. The first illustration will work but the power thruput will be lower due to rectification and sparks will be smaller. Having the cap across the transformer also results in higher HV stresses and shorter NST life expectancy. The reason for this has been gone into in great detail in the archives every few years for the last decade or more. The best way to do a sparkgap coil is gap across the transformer.
From: Christopher Karr <chriskarr4@xxxxxxxxxxx>
To: Tesla Pupman List <tesla@xxxxxxxxxx>
Sent: Mon, Mar 29, 2010 4:19 pm
Subject: RE: [TCML] Which Primary Circuit is Best?
There are certain circumstances under which different circuit configurations
on't work; you are correct in that respect.
If the primary coil is in parallel with the capacitor and the spark gap, you
ill have, effectively, no output when obeying the laws of physics. The
apacitor won't charge because it is directly shorted across the tank
ransformer and the primary coil. Current will flow directly through the primary
oil, effectively avoiding the capacitor since it represents a much larger load.
On the first link you specified, using a diode in that application is a foolish
dea. The diode will make you lose all 50/60Hz resonance.
As for the latter two configurations, the list (as well as many independent
oilers) has been debating this for years, though the general consensus is to do
hatever allows one to use shorter primary leads, so as to minimize power-loss
ue to stray inductance.
Best of luck,
- Christopher Karr
> From: brandonhendershot@xxxxxxxxx
Date: Mon, 29 Mar 2010 11:19:39 -0600
Subject: [TCML] Which Primary Circuit is Best?
So I've seen a lot of different ways to wire the primary circuit, and
I'm just wondering if any of them won't work under any certain
circumstances or if there are differences in performance.
The first is where the spark gap is in parallel with the transformer
and then the capacitor is parallel with that, then the primary coil.
So everything is in parallel here.
The next us where the capacitor is parallel with the transformer and
the spark gap is in series along one if the sides, and then the
primary coil. http://www.pocketmagic.net/wp-content/uploads/2009/01/tesla_coil_cc.png
The last is where the spark gap is parallel with the transformer and
the capacitor is in series on one of the sides, and of course the
Brandon in AZ
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