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Registered Member #1643
Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039
I've been working on a 1KJ capacitor bank for awhile now, and finally got things done. Now whats left, is to start hooking stuff up to it.
each capacitor is 450V 2400uF. They add to a total of 980J of energy.
SCR 1200V 650A Puck
Antiparallel Stud Diode 800V 300A
this bank is currently dedicated to multi-use. I have another 1KJ bank for a coilgun, and a 4KJ bank for some other project. 10KJ bank is slowly coming in as I get the cash.
Not much I can say right now, as I just got things to work...I did some simple tests with cruddy made coilgun, and stated the wrong voltage/amps for the diode in the video. The charger, is currently replaced with a variac and dualstack of MOTS. I dont have any spare MOTs, so I use my dual stack. I rather keep my quad stack alone.
Registered Member #1643
Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039
Wanted to give an update. I manage to get the stud diode mounted on using a few sheets of aluminum. The most i have done now, with both ring launcher and shorting to foil, is 400V. Roughly 700J. So yes, everything have been going good. I got the SCR properly mounted using terminal connectors, and everything held up when i discharged at least 50 shots that night. Was fun, but now I have to work on making a decent ring launcher, that's worthy to show off. I also charge this bank using my dual-stack mots, so I can later charge my 4KJ bank to 900V. Series/parallel configurations.
(2 vids showing foil exploding) It was in a tube, to muffle the sound. Even with ear muffs rated 20db reduction, it was still loud.
Registered Member #1497
Joined: Thu May 22 2008, 05:24AM
Location: Toronto, Ontario, Canada
Posts: 801
I would strongly recommend some anti-oxidant paste like noalox or whatever the equivalent is in your area. Its a paste that contains some alumina grit to scratch off the aluminum oxide coating and give better aluminum-aluminum contact, at the same time excluding oxygen from the joint.
Registered Member #1643
Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039
Updates!
Did some testing Thursday, exploded some stuff at full 450V charge. Was loud! I plan over time to move this bank into a coilgun..and use my 16 bank for exploding stuff..and later a 48 bank.
Video will explain it better than me typing it. Video of things exploding under 1000J of energy.
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1KJ Capacitor Bank
