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Registered Member #75
Joined: Thu Feb 09 2006, 09:30AM
Location: Montana, USA
Posts: 711
Sorry to rain your parade, but your numbers seem _very_ optimistic. Extracting 50kA from 300V implies that the impedance of the circuit is Z=V/I= 6mOhm. That is about the resistance of 30cm of heavy hook-up wire, without any connections to it.
Worse yet, at your postulated rise time of 1us, which corresponds to a frequency f=1MHz, the maximum inductance in the circuit is limited to L=Z/f = 6nH. This is the inductance of 1cm of wire!!
I am curious how you came up with that number, though.
Registered Member #354
Joined: Thu Mar 30 2006, 10:12AM
Location:
Posts: 55
Joe, I did not use any wire, I use thick and short bars. Your asumption is partially pretty good: I used a 1 cm wire. Caps, Bars and switch impedance 3600 microohms (measured), the other impedance was wire one I used aluminium bars, if copper were used I would had a half of it
R=r*L/A L=length and A=area in meters and square meters
Where r is the resistance that is 1.678E-8 ohm*m for copper and 2.62 e-8 ohm*m aluminium
It is very difficult find big amount of 330uF 400V cheap caps, isnt it?
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400 Joule exploding wire problem
