Re: [TCML] Dual MOT SGTC

[ianhelixsp@xxxxxxx]

Hi, nice work with limited resources.

Ian


-----Original Message-----
From: Liviu Vasiliu <teslina@xxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Wed, 25 Jun 2008 22:05
Subject: [TCML] Dual MOT SGTC



Hi list

I built these days another dual MOT for a friend (he needs it for a presentation 
or maibe to impress some other guys, who knows). I dont have the time to set a 
web page, but I made a quick movie presentation (sort of...) and some "action" 
movies.

The power source is just two MOTs in serie (4-4.5 kV output), inductive 
ballasted on the low voltage side. I still believe that it is the cheapest 
solution for the eastern Europe where the NSTs are still rare. They give enough 
power for a healthy streamer and if they are well ballasted they can get some 
more voltage input (from a variac) without saturation (just more voltage and 
lower current in the same power area). The gap is not set very wide (to mantain 
the breakrate at resonable high level), so the streamer is not the longest 
possible, but is still very good for a presentation. I wound a bit longer 
secondary to prevent the strikes to the strikerail, allowing the full lenght for 
the streamers. Because the low kV input the primary cap cost is very low.

The "presentation" movie:

http://www.youtube.com/watch?v=scdu0BoxSaw

220 V from mains, multiple streamer output:

http://www.youtube.com/watch?v=5IdWf83LNvw

250 V from variac, more like a single streamer output:

http://www.youtube.com/watch?v=18yltrMa5AE

Enjoy

teslina





      
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