Re: Sparks from an IGBT brick!

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

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

Hi Steve,

At 10:20 PM 7/9/2003 +0100, you wrote:
>Dear List,
>
>I managed to get an IGBT brick-powered OLTC to work. So far it has only 
>produced tiny 4.5" sparks at 10bps but I believe it has shown there is no 
>major problem with using bricks.

Excellent!!  I see you are not using a heatsink on the bricks.  I trust 
they stay very cool?  Looks like the bricks have no problem a all here.


>It used an 8" single turn primary, four 1uF geek group caps, and the 
>secondary/toroid borrowed off my mini OLTC. Current in the brick was about 
>1600 Amps at 130kHz. I never even bothered tuning it ;)

The 1uF 1000V caps really are not from the Geek group but rather Richardson 
electronics.


>Read more about the test at http://www.scopeboy-dot-com/tesla/t4sparks.html 
>(pictures may take a while to load)
>
>I would like to say a big thanks to Terry Fritz for contributing ideas to 
>this project, not to mention bricks and caps :)

Happy to help!!

Cheers,

         Terry


>Steve C.
>