Re: ASRSG question

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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
>
>
>