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Re: ASRSG question

Original poster: "Dr. Resonance" <resonance@xxxxxxxxxx>

If you are running up to 15 kVA you are really beginning to push your small
dia electrodes.  We use 1 inch dia stationary electrodes imbedded in 2 x 2
inch square brass blocks above 10 kVA.  At 20 kVA we go to 1 inch dia
rotorary electrodes and 2 inch dia stationary electrodes.

1/4 inch thick is too small to handle the heat with the rapidly repeating
bangs of high energy.

Dr. Resonance

have built. I think > I may have already mentioned this a few years ago and IRC, it was > sort of a mystery then. The problem is that when I make a rotary > gap of the dual gap style (2 pairs of stationary electrodes placed > 180 degrees apart along the periphery of the rotary disc so that > each time that it fires, the discharge goes through 2 rotary elec- > trodes instead of 1). Is that clear as mud? Anyway, when I try to > run my ASRSGs like that, it will not fire no matter how close the > rotary electrodes pass to the stationary electrodes or if it does > fire, it fires very erratically and ends up smoking something in > the control panel (I blew out a 1000 volt, 50 amp FWB rectifier > brick for the DC motor of my RSG last time)! In the past I was > able to rectify this issue by either going with a single rotary gap > or if I kept it double series, I had to use a motor with a double shaft > and keep both sets of stationary electrodes on the same side of the > motor. Does this make any sense? Also, I've noticed that SYNCHED > rotary gaps don't seem to have this problem with running double > rotary gaps 180 degrees apart. Can anyone tell what gives with this? > The only reason that I was thinking of using a double-seriesed ro- > tary gap is that I will be pushing up to 15 kVA with my latest > Tesla system and that will produce considerable heat at a single > contact point. > > Also, I've changed secondary coil from a 12.5" x 44" long wound w/ > 900 turns of #17 magnet wire to a 12.75" x 48.5" long wound with > 1260 turns of GREEN # 19 magnet wire. I think that #19 is still > large enough wire for this and I know the 1260 turns is a better > number of turns than 900, keeping in the 1000 to 1500 turn range. > That will be a better choice for secondary coil for a 15 kVA coil with > a 12x56 toroid. I have a 0.2 uFD primary capacitor and a 15 kVA, > 14,400 volt PDT to power it. Actually, I have (2) 15 kVA PDTs so > so I could series the PDT outputs for nearly 30 kV!.Of course, I > would then have to series instead of parallel my (2) Hipotroncs 0.1 > uFd, 50 kV pulse caps for a 0.05 uFD, 100 kV assembly instead of the > 0.2 uFd, 50 kV configuration that I now have. My rotary electrodes are > (8) each 1/2" x 2 1/2" long tungsten carbide drillling blanks and my > stationary electrodes are (2) each 1/2" x 3" long tungsten carbide > drilling blanks mounted in 2 1/2" long, 1.25" brass square stock. > Actually it WAS (4) stationary electrodes but now is (2) due to > the problem that i mentioned above in the first paragraph :^) Any > comments are welcome. > > David Rieben > > >