Re: Twins Spark Videos

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Rscopper-at-aol-dot-com>

Terry, 

My neighbors are my loyal fans, you can hear some good oohs and aahhs in the
background of the full video. 

The sparks pulse on/off for cooling.  The choke I am using for current limiting
is only 8 AWG, and it get's real hot at 103 amps.  The rotary spark gaps are
only 1/8-in tungsten, and as they get hot their resistance goes way up and the
sparks get shorter.  Two of the next 100 or so projects I have to do are to
rebuild the choke and RSG. 

Yes I am running at 24-25KW, and the sparks could be longer, but I have
purposely "detuned" a few items to prevent self-destruction of the system.  The
spark gaps are not at max to get consistant sparks and save my caps, the break
rate is 480 and not 120 to cool off the RSG tungsten better.  My goal is to be
able to set up and run for a few hours every weekend without having to fix it
every time (like I used to have to do). 

If I can get consistant thick white-hot 10-ft arcs between the Twins without
self-destruction, I'm happy. 

Scott 


>
> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tb3-at-att-dot-net> 
>
> Cool stuff.  You must be in good with the community to 
> have it in out front on the driveway.  I always hide my 
> TC work in the back yard. 
>
> Why do the sparks pulse on and off?  A problem, or are 
> you just nervous to switch it on for too long? 
>
> The web site says: 
>  Input Voltage Measured (VAC) 237 
>  Input Current Measured (A) 103 
>  Output Voltage (VAC) 14400 
>
> Is that what you were really pumping into the coils? 
>  237 * 103 = 24,411 Watts? 
>
> If so, something is still way out of tune.  You could 
> expect substantially more than 10 foot sparks from 24 
> KWatts. 
>
> Terry Blake