RE: Spark gap erosion resistance

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

Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>

Hi John,

It should be two-phase 180-degree  120-0-120.

Cheers,

	Terry



At 04:41 PM 1/3/2002 -0800, you wrote:
>
>Terry -
>
>Are you sure you have two phase at home?
>
>John Couture
>
>-----------------------------
>
>
>-----Original Message-----
>From: Tesla list [mailto:tesla-at-pupman-dot-com]
>Sent: Wednesday, January 02, 2002 6:00 PM
>To: tesla-at-pupman-dot-com
>Subject: Spark gap erosion resistance
>
>
>Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>
>
>Hi All,
>
>While testing my CW coil for Marc, I noticed that the "bullet" inserts he
>sent me are extremely resistant to erosion.  Here is a picture comparing
>one to a 1/8 inch pure tungsten rod after running a big arc about the same
>length of time.
>
>http://hot-streamer-dot-com/temp/erode.jpg
>
>The tungsten rod is well discolored and the tip was burning off.  However,
>the bullet is hardly discolored at all on the very tip!  They should make a
>wonderful high power spark gap tip.
>
>These "bullets" are apparently used as tungsten carbide tip inserts for big
>rock drilling bits.
>
>http://www.torquato-dot-com/acc.html
>
>http://www.mining-technology-dot-com/contractors/drilling/sandvik_smith/sandvik_
>smith6.html
>
>This is something people that need super high power spark gaps should look
>into...
>
>BTW - I am seeing about borrowing a 2500 watt power supply from work to do
>higher power testing :-))  It's three phase but can run from my home's two
>phase in a pinch...  Maybe then I will get fire balls.  If not, we have
>some 200kW ones... ;o))
>
>Cheers,
>
>	Terry
>
>
>
>