Re: new SSSSTC works ;)

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

Original poster: "S.Gaeta" <sgtporky-at-prodigy-dot-net> 

Hi Steve,

Those streamers are so bizarre! I have never seen anything like that. It
looks like you have merged some of the characteristics of a spark gap coil,
and a CW coil into one streamer!
Congratulations on a job well done. You have really tamed the wild MOSFET
:-)

I still haven't even powered mine up yet :-(. My driver I.C.s still run hot
when I apply anything over 8v to them (Vcc), and now I have this darned
cold. One thing I don't need is to have some conductive liquid dripping on
the circuit while I am testing!

Sue

 >  > Hi everyone,
 >  >
 >  > awhile back i posted about trying out a new SSTC topology.  Some were
 >  > skeptical (and i still am a bit), but these first few tests have really
 >  > proven that its working.  Just how well is yet to be determined when i
 > wire
 >  > up 240VAC service.  So far ive gotten 24" sparks to the target.  The
 >  > bridges were cold after the short run.  The input was 140VAC at less
than
 >  > 15A (since the 15A breaker never went).  Things are looking pretty
good,
 >  > 240VAC input will surely be exciting.  I need a new primary coil form,
my
 >  > cardboard one started tracking :(  Im using 19 turns on the primary
 >  > coil!!!  That is not normal for a SSTC making 2 foot sparks, hehe.
Also,
 >  > the coupling is rather low at this point.  Anyway, see the updates at:
 >  >
 >  > http://www.hot-streamer-dot-com/srward16/SSSSTC.htm
 >  >
 >  > I will be updating it all the time, so if your interested check back
 >  > frequently.
 >  >
 >  > Some thoughts on this topology:  The actually voltage multiplication
part
 >  > works exactly as planned.  With 40V input i was lighting up a 60W
 > lightbulb
 >  > on the output to more than full brightness (also with about 65W input
 > since
 >  > the actual ouput was about 160V).  It seems the topology functions
exactly
 >  > as the original PDF document (linked on my site) suggested it would.
 > Also,
 >  > i did a small test for voltage self-balancing, it was evident that no
 >  > half-bridge unit saw more than the input voltage... great!  I cant
scope
 >  > the output of the inverters when running this high of power since at
 > 140VAC
 >  > input, there is theoretically 800V on the output (my scope would fry).
 >  > Maybe i will make a voltage divider and scope the output to find if the
 >  > topology is still working as planned even at the higher power levels.
 >  >
 >  > Steve Ward
 >  >
 >  >
 >  >
 >  >
 >  >
 >
 >