It does not seem like power is getting to the bridge. The controller has to
be working as it was tested out of the shop I bought it from and it does
activate the ohm meter when I place the leads across the collector and
emitter of the igbt. The controller is given 24 volts. The capacitors are
all checked and in series with the circuit. Everything is working but there
is no current flow across the Igbt. I tried probing the current transformer
leads attached to a burden resistor but the scope picked up nothing. I
double checked my windings on the gate drive transformer and the
connections are all correct.
On Sun, Jun 5, 2016 at 1:27 PM, Brian Decosta <briandecosta38305@xxxxxxxxx>
wrote:
> Hook the current transformer leads directly to the scope. May want to add
> a resistor.
>
> Sent from my iPhone
>
> > On Jun 3, 2016, at 5:44 PM, Noah Anglin <noahbdanglin@xxxxxxxxx> wrote:
> >
> > Hello all,
> > I think that at least someone might have had the problem that I do at the
> > moment. I am building Eastern Voltage Research's reference design 1.0
> > DRSSTC and need some help. I managed to get the bus circuit working
> > properly at the intended 340 volts and have assembled the rest of the
> coil
> > according to the schematic but am not getting any sparks. When I give the
> > controller a signal, it does respond by lighting the MOD ACTIVE light
> > according to the signal power and frequency but It does not appear to be
> > driving the circuit at all. My IGBT is working (I tested it). I am also
> > fairly certain that nothing else in the switching circuit is broken. Any
> > suggestions for what might be wrong?
> >
> > I don't use oscilloscopes very often and therefore am unsure where I need
> > to probe the circuit to get a current reading. I have an extra current
> > transformer but have no idea how to hook it up with my oscilloscope.
> >
> > If anyone has any ideas on what I'm doing wrong it would help out a lot.
> I
> > am trying to finish this before I graduate high school in two weeks. My
> > brother and I started this DRSSTC project about a year ago and moved on
> to
> > a fusion reactor before we finished the Tesla coil so the Tesla coil
> > project got pushed to the side. Now that the fusion reactor is complete,
> I
> > would very much like to finish this project.
> > You might notice some of the other projects in my room. They include a
> > laser turret, fusion reactor and a few spark gap Tesla coils. If you're
> > interested here <https://www.youtube.com/user/musicman977/videos> is a
> link.
> > Thanks!
> > Noah Anglin
> > _______________________________________________
> > Tesla mailing list
> > Tesla@xxxxxxxxxx
> > http://www.pupman.com/mailman/listinfo/tesla
> _______________________________________________
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>
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