# COMMUNITY : FORUMS : SCIENCE

## Explosive Fun with a Capacitor Bank

Watch a 24kj capacitor bank as it discharges through various objects. Maniacal laughter follows each one and a slo-mo montage finishes it all up.

via Make blog

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junits159 years ago
where did u get all those caps!? and how did u charge this?
9 years ago
I have that same question too...
9 years ago
Plasmana, can you remember the equation to get the amount of joules from the capacitance and voltage? I can't... Also my guess would be collection over a few years unless they have some cash lying around, I knew a guy that had five one farad and pretty high voltage caps on his shelf in his room...
9 years ago
E=1/2(V2C)

E = Energy in joules.
V = Voltage in volts.
9 years ago
I got the answer but thanks anyway.
9 years ago
Is this what you're after?
9 years ago
too many complex formulas, hurts the mind of and eith grade algebra student..... X(
9 years ago

yes I did just change your name to that... I do it a lot granted it sounds better when said...
9 years ago
I"m going to say ebay and probably charged through several MOT's.

Lets see, there's 100 capacitors, 10 sets with 10 capacitors in each set in parallel. It's max charge is 4500 volts at 2400uF

Since electrolytic capacitors don't go that high of a voltage, I'm going to assume that the 10 sets are in series. That means that each capacitor must be rated at 450 volts and 2400uF

lets see if I can find an ebay link to a product like that (probably sold in bulk at 100 caps.

http://cgi.ebay.com/450V-2200-uF-High-Voltage-Electrolytic-Capacitor_W0QQitemZ280270505814QQcmdZViewItem?hash=item280270505814

He probably bought it somewhere else, or a listing that was a good deal earlier (like a one time sale, not a store).
9 years ago
wat is a MOT?
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