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Re: Really big VTTCs

Original poster: "resonance" <resonance@xxxxxxxxxxxx>

I'm all ears.
Can you suggest a nice surplus tube that would handle 10 kVA at around 7.2 kV? I'm thinking of a small 7.2 kV, 10 kVA pole xmfr for power. Perhaps two big 10 kVA tubes running at 20 kVA into a 24 inch dia. coilform approx 72 inches long. 34 x 8.5 inch toroid. Perhaps with John's stattaco controller on the tubes.


Dr. Resonance

By comparison, VTTCs seem to have topped out at a 4" x 20" secondary, driven by one to four 833A tubes. The consensus seems to be that you can get just about as good performance from one 833A as with 4 of them, if you design the coil right. Perhaps 36" discharges seem to be the limit for VTTCs on a good day.

Is there some physical or electronic limitation to the design and construction of a really big VTTC? With the availability of big surplus power tubes (10 kW or more) on eBay, and the possibility of multiple parallel free MOTs for input power, is there a physical reason why no one has built a 12 x 60 or 18 x 90 VTTC?
Ten foot sword like discharges would be neat to watch!