Re: [TCML] static gap singing coil hybrid.

[Tesla <tesla@xxxxxxxxxxxxxxx>]

Team

I've had great success with MOT's and DC design also using more MOT's in the 
charging inductor, hate to go on but this was very low cost and big power 
coiling just using MOT's as you are thinking about

My main supply is 6 MOT's,  3 MOT's centre ground per side) for a little 
over 12kvac (No shunts)
Rectifier FW bridge with lots of 1n5403's
PI DC filter C,L,C (The L is 4 gapped MOT's by 0.3mm) two in series of 2 in 
parallel
Ring up L same as DC filter
300bps SRSG,  90nF Cp, really big toroid system (12" flexiduct)
Goes amazing, well over 3m at about 10kVA
Very smooth operation

Rgds
Ted L in NZ

> Phillip,
> I was planning on eventually building a DC coil eventually anyway, and I 
> have enough microwave oven capacitors and diodes that I could build a MOT 
> based level shifter with all the current I can handle, not sure if that 
> would cut it or if I would need a resonate charging inductor, which could 
> be made with more MOTs in theory.  Since it is triggered it shouldn't need 
> an especially high voltage I suppose, so 4kV was where I was aiming.  The 
> biggest hurtle I see is cooling, having that arc that close to glass for 
> prolonged periods will be tricky, but maybe if I run cold air or oil or 
> even water through the tube, its life expectancy should be similar to 
> glass jar capacitors I'd imagine, even if I only get 15 minutes out of it 
> glass tubing is a lot cheaper than IGBT's, and is easy to replace...


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