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Re: AW: [TCML] Coil pic w/ SRSG
Joe you wrote >>>
"But I'm going to start on the "production" SRSG. Thinking to do a
design like the ones on John's website, where each of the rotating
tungsten electrodes shorts out the HV supply on both sides - so there's
no current flowing through the rotating disk itself."
I think this method is better as it *may* help to stop the 'ring of fire' or
'power arcing' effect. That is where the arc gets drawn around the path of
the rotor. A correct value for cap and charging current should really stop
that anyway, but if the system is inclined that way, then the circular
mounting ring may make it worse.
The big disadvantage though is that one of the terminals will end up
physically close to the motor's casing, so you need to consider the disc
size used and the actual physical size & shape of the motor you are using.
An insulating piece (cutting board, Tufnol, Acrylic) placed between the
terminal mounting post and motor casing may be needed.
You also wrote >>>
"I know the optimal tap point - I imagine you don't want to be snaking
the tap wire all over the place under the primary - or does it not
matter?"
You need some slack to get different tap points but keep to a minimum. I
found by measuring the resulting frequency that routing the lead in
different ways, - by that I mean using the same lead start point (the MMC)
to the same end point (the primary tap), but routing it around in different
directions - could make as much as half a primary turn difference.
So routing the leads differently during the 'fine-tuning' stage, could
result in actually making no difference at all! "Head scratching time" -
I've been there.
Your own coil's geometry may behave differently of course. My MMC is under
the primary you see (well spaced though)
Phil
--------------------------------------------------
From: "Joe Mastroianni" <joe@xxxxxxxxxxxxxx>
Sent: Tuesday, July 06, 2010 3:52 AM
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Subject: Re: AW: [TCML] Coil pic w/ SRSG
CHeers,
Joe
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