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Registered Member #1430
Joined: Sun Apr 06 2008, 11:12AM
Location: Ã…rhus, Denmark
Posts: 102
hey all. im thinking about making a coilgun. ill probably just charge it with a disposable camera to start with. my question is: would a bank of 22µF 50V capacitors connected in parallel and serial work OK? i found a place that sells rolls of 1000 22µF 50V's for only 49DKK(10.15$)
Registered Member #1262
Joined: Fri Jan 25 2008, 05:22AM
Location: Maryland, USA
Posts: 451
You could also try and get a huge load of disposable cameras, if you run the 330V caps at say... 250V you shouldn't have any issues with them. They still pack a good 4 joules a piece at 250V and can be paralell into pretty large banks. Just ask your local camera store, if they're nice you can walk out of there with 200+ cameras free, most of the time they are glad to get them off their hands.
Also you should look into larger caps, mouser sells 15,000uF 50V Xicon caps for about 5 bucks each. You're getting 22,000uF 50V for $10.
I'd still reccomend getting those 22uF caps, they are pretty useful, just not for crazy high power capacitor banks.
Registered Member #1262
Joined: Fri Jan 25 2008, 05:22AM
Location: Maryland, USA
Posts: 451
It also pays to ask around, first place I asked (small local place, now closed), I got a a few along with a "becareful not to electrocute yourself". Second place I tried (big national chain, in the mall) the guy was tired of hauling them 1/4 mile through the mall to the loading dock and he handed me a 30lb box with 250+. I've gotta go back there some time and get a few thousand before the public figures out how "dangerous" they are...
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capacitor bank
