I need to make a plate capacitor of 7nF 50KV. I will use aluminum foil and 1.5mm thick polycarbonite insulator. The area I came up with is 3.5 sqaure meters. Is that right?
Check my capacitor calculation
Jan 10, 2011
8 Replies
Check out the link below for the epsilon value
Formula for capacitance:
I am certain it is not.
7nf is close to what you have with two pieces of wire twisted together for about 5 inches.John Ferrell W8CCW
I think you are talking about picofarads with the twisted wire
7 Nanofarad is 7000 picofarad.sinebar Inscribed thus:
Do you mean 7 nanofarad or 7000 picofarad ?
Best Regards:
Baron.
That must be some mighty thin insulation on that wire.
You can't fix stupid. You can't even put a band-aid on it, because it's
Teflon coated.
Yes I mean 7 nanofarad.
A = C * d / (k * e0) = 7E-9 * 1.5E-3/(2.9 * 8.854E-12)
= ??
.. maybe you put k in the numerator?
Best regards, Spehro Pefhany
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My error! You are correct... John Ferrell W8CCW
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