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Registered Member #56
Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
It looks to me more like some type of high voltage filter capacitor, out of a radar or some such type device. The dc rating would mean its not a power factor correction cap (which would be bad), but the lugs do not look like the 'insane high current' type. I would guess it is out a radar or other large vacuum tube device, and it looks like it stores about 20j in each of the capacitors (0.5ufd at 9000v).
Registered Member #2298
Joined: Sat Aug 15 2009, 08:16PM
Location: ex UK, now Santa Cruz, CA
Posts: 35
Might be. Paper is not the best dielectric, but the thing looks beefy enough that it might handle it. You could run it for a short period and see if it gets warm. Is there an overpressure relief vent somewhere on the can? If not it would be a good idea to build a plywood box around it to contain shrapnel "just in case".
Be aware that it probably contains oil with PCBs, which makes it a minor hassle to dispose of, and it's best not to drink the contents.
Registered Member #2470
Joined: Tue Nov 17 2009, 05:47AM
Location: Simi Valley, CA
Posts: 43
Haha, wilco on the PCB's. No pressure relief, ill make a 1" plywood box for it. It is .125" steel, but you never know. Any ideas on what i could use this for other than tesla coils? I hope this wasn't a terrible buy! But for $40 im not out too much either way.
Registered Member #2470
Joined: Tue Nov 17 2009, 05:47AM
Location: Simi Valley, CA
Posts: 43
Aww man! i just realized that since one of the terminals on each capacitor is tied together, i cant double the voltage! This thing may be more useless than i originally thought. Any bets on wether or not this thing will withstand 15kV? I really don't know what i'm going to do with it other than use it on a tesla coil, but all my transformers are 15kV.
Registered Member #2470
Joined: Tue Nov 17 2009, 05:47AM
Location: Simi Valley, CA
Posts: 43
Unless! would one of these be useful in a DRSSTC or a SSTC? I do not know much about SSTC's or DRSSTC's but eventually, i plan on making one. God, i really wish it would work for my current coil!
Registered Member #2298
Joined: Sat Aug 15 2009, 08:16PM
Location: ex UK, now Santa Cruz, CA
Posts: 35
Looks like the capacitors are already in series, which is what you want for a higher voltage rating. Connect to terminals 1 and 3, it'll be 0.25 uF / 18kV rated.
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Look what i picked up today!
