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- To: tesla-at-pupman-dot-com
- Subject: H2 thyratron update
- From: richard hull <rhull-at-richmond.infi-dot-net>
- Date: Tue, 4 Mar 1997 19:42:53 -0500 (EST)
All, As most of you may remember my complete reporting of the week long investigation during Christmas of the results of the electrostatic genration by Tesla coils, you might also remember the H2 thyratron gap replacement system I tested as well. I mentioned that I would work on back to back units to mime a truly variable dwell gap. I just obtained the special sockets for the 5C22s and hope to get underway soon. The hassle is that the grids will probably have to be left positive for the total conduction period regardless of oscillation polarity back from the primary. This is a classic no-no for these puppies. the problem of course is field emmision possibilities from the grid and the associated grid current which might be significant. (Good thing I got a beefy grid pulse system!) Also, the conducting tube should grab most of the real power, as it damned well should. The only reason it might work is the frequency of the system is high- 500khz and the peak power level quite low under- 80 KW (tubes are rated at 1.2 megawatts)- conducting grids are not part of that rating. It will be all in the finest Freau tradition... only it'll be red grids in the sunset. I'm also expecting a bit of cathode sparking and particle release (gotta video this thing for our tapes.) The last hassle is to remove the supply totally from the system during ring. To be done with a hard tube or maybe even a specially adapted rotary gap. The Vacuum purists and the SPCT (society for the prevention of cruelty to tubes) will be all over me like a cheap suit. I got lotsa' ideas, equipment and stuff, but little time. The work progresses. More as it happens. Richard Hull, TCBOR
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