Re: OLTC II More sparks!

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

Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>

Hi Steve,

I am amazed at how well this is working!!!  You truly have extended the 
state of the OLTC art!!!  I have not been able to do much more with the 
OLTC here, but it is wonderful to see others taking the technology so far 
and so fast!!

Cheers,

         Terry


At 10:09 AM 4/6/2004, you wrote:
>Hi list
>
>I have been getting some good results with the OLTC II. It will now do 5
>foot arcs, using 2.5kW of power at 400bps. This is now about as good as a
>spark-gap coil running at 400bps, but a 120 or 200bps coil is still more
>efficient.
>
>There has been some trouble with the driver circuit: at high powers it jumps
>between first and second notch quenching. This has made it run a bit
>roughly, with excessive heating of the primary. Tuning the primary slightly
>high seemed to help it, so this is what I did for these runs. But of course
>it reduces the bang energy. So once this is sorted out- and I have a fairly
>good idea how to fix it- I hope to get even bigger arcs 8-o
>
>Thanks to Alan Sharp who organised the venue for these tests. (It's getting
>a bit too big and noisy for the garden)
>
>***
>
>Here are some movies and pictures-
>
>http://www.scopeboy-dot-com/tesla/oltc1.divx
>Solid arcing to a target 4 and a bit feet away (800k DivX movie file)
>
>http://www.scopeboy-dot-com/tesla/oltc2.divx
>A single 5 foot arc (800k DivX movie file)
>
>If your (WinDoze) computer doesn't want to play the movies, try changing the
>file extension to .avi
>
>http://www.scopeboy-dot-com/tesla/oltcmoresparks.jpg
>Picture taken by Richie Burnett
>
>http://www.scopeboy-dot-com/tesla/OLTCBigSpark.jpg
>A still frame from the above movie showing the 5 footer
>
>
>Steve C.