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RE: [TCML] Which Primary Circuit is Best?
There are certain circumstances under which different circuit configurations won't work; you are correct in that respect.
If the primary coil is in parallel with the capacitor and the spark gap, you will have, effectively, no output when obeying the laws of physics. The capacitor won't charge because it is directly shorted across the tank transformer and the primary coil. Current will flow directly through the primary coil, 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 idea. The diode will make you lose all 50/60Hz resonance.
As for the latter two configurations, the list (as well as many independent coilers) has been debating this for years, though the general consensus is to do whatever allows one to use shorter primary leads, so as to minimize power-loss due to stray inductance.
Best of luck,
- Christopher Karr
> From: brandonhendershot@xxxxxxxxx
> To: tesla@xxxxxxxxxx
> Date: Mon, 29 Mar 2010 11:19:39 -0600
> Subject: [TCML] Which Primary Circuit is Best?
> Hi all,
> 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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