Re: [TCML] SSTC help

[DC Cox <resonance@xxxxxxxxxxxx>]

This coil, along with our 15 kVA coil will be on display at our next
Teslathon.

Dr. Resonance




On Tue, Oct 13, 2009 at 8:11 PM, Dr.Hankenstein <
dr.hankenstein@xxxxxxxxxxxxx> wrote:

> Show me the sparks!
>
> H
>
> -----Original Message-----
> >From: DC Cox <resonance@xxxxxxxxxxxx>
> >Sent: Oct 13, 2009 4:59 PM
> >To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> >Subject: Re: [TCML] SSTC help
> >
> >If your igbts are not phased properly one may be slightly turned on while
> >the other is slightly off.  If you don't phase them properly they will
> blow
> >is short order.
> >
> >Also, check for high frequency ringing which is a killer.  Proper
> filtering
> >with inductors or caps can eliminate this problem.
> >
> >The system of feedback you use to keep the pri circuit in tune with the
> sec
> >circuit is also critical.  Solid state components work great but will
> >absolutely not tolerate much range as will the spark gap type oscillators.
> >
> >I hope to have a set of boards populated and ready for sale this winter.
> >Right now they are working great running with Powerex CM300s on our test
> >coils.
> >
> >Dr. Resonance
> >
> >
> >
> >
> >On Mon, Oct 12, 2009 at 9:13 PM, Rob Byron <mustang_5l87@xxxxxxxxxxx>
> wrote:
> >
> >> Hello, I have been working on my first solid state coil for a good part
> of
> >> a year and after many blown components and hours searching the net, I am
> >> stumped. The coil I am working on is of Steve Ward's mini sstc. I used
> eagle
> >> to etch a board to replace the crappy proto type board. This gave me
> better
> >> results ( my UCC's don't fry anymore :) I put an LED on the output of
> the
> >> interruper to make sure that works. My gate drive IC's make a high
> frequency
> >> buzz. Not sure if I should be able to hear that? But it leads me to
> believe
> >> they work. My half bridge is on a variac, rectified and filtered. I get
> >> 170VDC at full power on the bridge. But I can't get breakout?? I did try
> >> swapping the primary leads to get 180* out of phase. Here is a link to
> >> video.     http://www.youtube.com/watch?v=kX7oV9iC0Jo
> >>
> >> Thanks in advance for any help.
> >>
> >> Rob.
> >>
> >> _______________________________________________
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> >> Tesla@xxxxxxxxxx
> >> http://www.pupman.com/mailman/listinfo/tesla
> >>
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