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Registered Member #10
Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
The circular JL is an interesting idea. It says 3kV 500A = 1.5MW Judging by the intensity of that spark it looks a lot less than that but still fearsome. I have wondered about making an upside down JL but I have not seen a circular one before. It would have been more reliable if he had the entry point of the circle on an upstroke rather than the bottom where it will stall. A high current low voltage is probably a necessary to make this work. You need a high current without too much heating and with a close gap.
It relies on the "rail gun" effect and should work with either polarity. I can see the rail gun effect when I fire my cap bank through steel wool. It all gets shot out away from the caps.
They must have a lot of power available in Germany. Mathias says he has 400V 3 phase 63A domestic service. Nice to have 75kW to play with rather than the 250V ?50A = 12kW here in Australia. We don't need the heating though.
Another pic from Matthias. Note the plastic work for the transformer cases. Also note how far apart the JL electrodes are in the far transformer.
Registered Member #10
Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
The spark still has to jump the gap in the circle each rotation. There has to be a gap to allow the process to continue so you need sufficient voltage to jump a gap all the time.
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Huge 3 phase Jacobs ladder
