[TCML] SSTC type Drive for X-ray transformer

[Jim Lux <jimlux@xxxxxxxxxxxxx>]

I'm speculating about schemes to repurpose an Xray transformer I have 
for a DC coil.  It's in a portable machine designed to produce about 
100mA at 110kV  (10kW) and it runs at a few hundred Hz off a discrete 
multivibrator made with SCRs, powered by about 100V in NiCds  (the idea 
is that you charge this thing continuously, then roll it down the hall 
to make your exposure, etc.... that way you don't have to have a 10kW AC 
feed..)

So, it's a bit clunky and 100kV is *way* too high for any sort of 
practical tesla coiling.  So, my first thought was to power the thing 
off a high power audio amplifier driven by a variable voltage/frequency 
source controlled by some sort of regulator  (i.e. one could make a 
variable voltage/variable current source).

But a (short) bit of contemplation made me realize that a 10kW audio 
amplifier is non-trivial in itself.

So I started thinking.. what about the same sort of high power circuits 
that are used in SSTCs...

Any ideas from the folks on the list.. Probably want switching rates in 
the 100-1000 Hz range.  The original SCR scheme produced basically a 
square wave, so the transformer core is fine with the high frequency 
harmonics.

I'm thinking that I probably want to run this at 50kV Maximum output 
voltage (5kW, if I hold to the original 100mA current.. presumably 
that's thermally limited by the diode stacks or something), so I could 
generate a 150-300VDC bus with a lot of ripple with an off-line AC 
rectifier/small filter.

Suggestions for active devices, etc. gratefully appreciated.

(it has also occurred to me that if I can change the excitation 
frequency to the HV transformer, I can make a simple static gap TC that 
can do simple music.. an intriguingly simple implementation, compared to 
various triggered gap/variable speed rotary gap approaches.
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