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Re: [TCML] New 833C VTTC - poor performance
I'm glad you found the problem. That's actually the first thing
that should be checked when a VTTC runs poorly, but I completely
forgot to mention it.
It's better to use an SCR rather than a triac for the staccato. An
SCR has a much more robust internal construction. I used a 50 amp,
1200 volt one I think, but that was over-kill. I used it because
I had it. My triacs started blowing up when I reached 29" sparks,
but the SCR held up.
I GOT IT!!! I finally found the problem. The grid coil was wired
switched the leads and got 18" arcs instantly, without any plate glow!
Thanks to everyone who offered help. I have learned a lot with this
Once I recheck all the tuning and tweeking, I'm on to building the
controller (the eastern voltage research one). Anyone have any
suggestions for a
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