Re: Latest WCSTSG

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "brian by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ka1bbg1-at-mcttelecom-dot-com>

Hi, on the welding lense get a piece of clear glass in front of the lens
just like in a welding helmet,keeps the crap and heat off the lense. cul
brian f.
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Monday, August 27, 2001 12:46 AM
Subject: Latest WCSTSG


> Original poster: "Terrell W. Fritz by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <terrellf-at-qwest-dot-net>
>
> Hi Marc, Ted and the List,
>
> Even though the list is down (not sure why but i have a note into Chip
> about it), I have been working on the Water Cooled Sync Triggered Spark
Gap
> (WCSTSG).
>
> I simplified things now that I know what works and added some nice wood,
> easy adjustment, and even a nice viewing window ;-)  I went with pure
> tungsten electrodes since the tungsten carbide was giving me problems.
> There are a bunch or different alloys and I guess you have to have the
> right ones.  The 1/8 inch pure tungsten welding rods seem to do great
> without wear.  I cut them to about 3/4 inch and pressed them into MIG
> electrodes that were drilled to 1/8 inch.  If the hole is loose, a few
very
> light taps with a hammer will tighten them right up for pressing. I
> sharpened the tungsten to give a slight nail tip so it would not gall
while
> being pressed in.  The MIG tips are some type of alloy that drills very
> nicely.  The gap is 6.5 wide, 5.0 deep, and 8.25 tall.  The front window
is
> a 4.5 x 5.25 inch welders glass for helmets that is a shade value of 9.
It
> allows you to see what the gap is doing safely.
>
> I figured that the water filled tubes would run 2 hours without a refill
> but that is assuming the air does not help cool them.  Of course, the
water
> volume can be increased if needed.  I drilled the mounting hole to 3/4
inch
> and I have flat washers so they can be positioned as needed.  I just used
a
> ring of 1 inch copper pipe for the field distorting trigger ring.
>
> I snapped a bunch of pictures below which are pretty self explanatory.  I
> need to check to see if 250pF isolation caps, in-line 5 ohm resistors to
> the coil, and resistor type ignition wire reduce the noise back to the
> dimmer control, reducing the need for the big load resistors.  Other have
> mentioned that this works well...
>
> http://hot-streamer-dot-com/temp/TerrysWCSTSG/
>
> This gap could be enclosed too.  I tried covering to top but it seemed
just
> as loud, but I was running without a secondary so the gap was dissipating
> the full cap energy.  I also noticed that the ozone an NOx build up in the
> box if it is closed.  After running it, I pulled the top off and the fumes
> almost knocked me over :<O
>
> Cheers,
>
> Terry
>
>
>