No current getting into the bridge mmme - sounds like the voltage doubler
circuit is somehow not connected to the bridge. Dont know what to think at
this point, but if I can come up with something, will let you know!
On Sun, Jun 5, 2016 at 5:10 PM, Noah Anglin <noahbdanglin@xxxxxxxxx> wrote:
> 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
> > > _______________________________________________
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> >
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