Re: Triggered Tap Testing

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

Original poster: "Malcolm Watts by way of Terry Fritz <twftesla-at-qwest-dot-net>" <m.j.watts-at-massey.ac.nz>

Hi Terry,
           I had a look at your scope trace. By my reckoning, the 
circuit energy drops to 1/4 of its initial value after 7-1/2 cycles.
You'd typically transfer in three at usual k's. I think a higher X 
primary would improve matters considerably. What were the values you 
used?

Regards,
Malcolm


On 11 Aug 2001, at 15:41, Tesla list wrote:

> Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>
> 
> Hi All,
> 
> I did some testing with Marc's triggered gap today using this setup:
> 
> http://hot-streamer-dot-com/temp/MarcGap/MarcGap1.jpg
> 
> Marc's gap uses two tungsten carbide milling tools for the electrodes and a
> 1/8 inch tungsten rod for a trigger electrode:
> 
> http://hot-streamer-dot-com/temp/MarcGap/MarcGap2.jpg
> 
> When the gap is running, the arc goes from one electrode, to the trigger
> electrode, and then on to the other main electrode as can be seen with a
> welder's glass:
> 
> http://hot-streamer-dot-com/temp/MarcGap/MarcGap3.jpg
> 
> The gap does track perfectly with the trigger signal and appears to have
> fairly low loss:
> 
> http://hot-streamer-dot-com/temp/MarcGap/scope.gif
> 
> The gap is very bright and one should visit the welding store for some
> welder's glass or goggles (they are cheap, a few dollars).
> 
> The gap does get pretty hot but the tungsten does not care much.  A small
> fan would really help.
> 
> I think the loss would be far less if the trigger electrode just distorted
> the fields so the arc went between just the main electrodes.  Working on
> this ;-)
> 
> Cheers,
> 
> 	Terry
> 
> 
>