Re: Why is the coil being weird???? (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Thu, 8 Nov 2007 15:10:39 -0800 (PST)
From: G Hunter <dogbrain_39560@xxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Why is the coil being weird???? (fwd)

>From your description it sounds like your spark gap is
heating up, then breaking into power arcing.  That's
why the coil works fine after a cool-off period.  This
allows the spark gap electrodes to cool off, restoring
proper operation--until it gets hot again!  I'm
roughly 80% sure I'm right about this one.

A power arc is fine for welding, but no good for
commutation of pulsed current.  I suggest you upgrade
your spark gap.

A vacuum-powered sucker gap is a simple, cheap
solution.  Visit my site or Gary Lau's site for a good
description of the static sucker gap.

http://hot-streamer.com/greg/vacgap.htm
http://www.laushaus.com/tesla/onegap.htm

Greg

--- Tesla list <tesla@xxxxxxxxxx> wrote:

> 
> ---------- Forwarded message ----------
> Date: Wed, 07 Nov 2007 21:49:41 +0000
> From: jhowson4@xxxxxxxxxxx
> To: tesla@xxxxxxxxxx
> Subject: Why is the coil being weird????
> 
> I have been tinkering with my coil for a while now
> and it has been acting weird since the day I built
> it.  but it is just starting to get on my nerves.
> 
> So basically
> When I run my coil at first if is good.  producing
> 30" sparks lots of noise etc.  
> But after about 5-6 seconds it just craps out.  The
> spark gap stops making the normal loud spark gap
> sounds and it starts to make a really quick softer
> sound.   Like the one the tv makes when there is no
> channel and just static.  At the same time the
> sparks length drops to about 4".   
> I turn it off.  let it chill for like 30 seconds and
> then it does the same thing.   If I turn it off and
> don't let it chill it just does it quicker. 
> Very annoying.  
> I am currently using 5 obits in parallel and 2   
> .005uf home made capacitors.  The spark gap is 2
> bolts less than 1/4" apart in a tube that is
> connected to the blowing end of a vacuum.  The
> frequency is about 600kHz.  
> Any ideas and  help will be great.
> 
> Many thanks,
> Jay Howson
> 
> 
> 


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