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Forums
4hv.org :: Forums :: High Voltage
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how much power can this cap produce

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Chris Cristini
Fri Oct 10 2008, 03:19AM Print
Chris Cristini Registered Member #1749 Joined: Fri Oct 10 2008, 02:04AM
Location: Claremont New Hampshire
Posts: 497
Sangamo capacitor it is 8 uf 3000v it is huge i got 3 of them out of a old radio transmitter or what ever it was
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Dragon64
Fri Oct 10 2008, 03:46AM
Dragon64 Registered Member #1438 Joined: Sat Apr 12 2008, 12:57AM
Location: Canada
Posts: 218
What do you mean by produce? Since capacitors store electricity, not produce it.

You probably meant, how much energy can this capacitor store.

Stored Energy= (0.5)(0.000 008 F)(3000 v)^2 = 36 joules
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Chris Cristini
Fri Oct 10 2008, 04:02AM
Chris Cristini Registered Member #1749 Joined: Fri Oct 10 2008, 02:04AM
Location: Claremont New Hampshire
Posts: 497
thanks sorry i should think a little bit before i type what is 36 joules in amperage?
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Myke
Fri Oct 10 2008, 04:09AM
Myke Registered Member #540 Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969
Joules is a measurement of energy, not current. To get the current that will flow through the load, you need the inductance, resistance, voltage and capacitance. There are some Java calculators floating around on the internet.

Here's one Link2
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Bjørn
Fri Oct 10 2008, 02:50PM
Bjørn Registered Member #27 Joined: Fri Feb 03 2006, 02:20AM
Location: Hyperborea
Posts: 2058
It depends on the type of capacitor, if it is made for high power discharges it might deliver several kA of current. That means several MW of power.

If it is another type of capacitor it might just manage a tiny fraction of that before it self destructs.
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Chris Cristini
Fri Oct 10 2008, 03:37PM
Chris Cristini Registered Member #1749 Joined: Fri Oct 10 2008, 02:04AM
Location: Claremont New Hampshire
Posts: 497
ill get a pic these things are huge
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Chris Russell
Fri Oct 10 2008, 03:41PM
Chris Russell ... not Russel!
Registered Member #1 Joined: Thu Jan 26 2006, 12:18AM
Location: Tempe, Arizona
Posts: 1052
Great. In the meantime, perhaps you can review the site rules regarding punctuation, spelling, doing your own research, and posting in the correct forum.
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Chris Cristini
Sat Oct 11 2008, 01:12AM
Chris Cristini Registered Member #1749 Joined: Fri Oct 10 2008, 02:04AM
Location: Claremont New Hampshire
Posts: 497
here they are
1223687569 1749 FT55434 S6300722

1223687569 1749 FT55434 S6300723

1223687569 1749 FT55434 S6300721
i dont think i will play around with these i charge one of them and the discharge was so loud it was crazy im pretty sure if someone got bit by one of these they would probably die. amazed
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TheMerovingian
Tue Oct 14 2008, 03:40PM
TheMerovingian Registered Member #14 Joined: Thu Feb 02 2006, 01:04PM
Location: Prato/italy
Posts: 383
crazy4 wrote ...

i dont think i will play around with these i charge one of them and the discharge was so loud it was crazy im pretty sure if someone got bit by one of these they would probably die. amazed
So don't mess with those, a mistake can be your last one...

I suggest first playing with smaller caps if you are a beginner, like photoplash ones...


remember: safety is everything!!!
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Chris Cristini
Tue Oct 14 2008, 03:51PM
Chris Cristini Registered Member #1749 Joined: Fri Oct 10 2008, 02:04AM
Location: Claremont New Hampshire
Posts: 497
the thing is im not to worried about me im worried about little curious ones that run around the house i would love to make a sgtc but to dangerous. sad
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