sinebar
Guest
Mon Jan 10, 2011 9:47 pm
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?
Sjouke Burry
Guest
Mon Jan 10, 2011 10:18 pm
sinebar wrote:
Quote:
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 out the link below for the epsilon value
Quote:
http://www.ami.ac.uk/courses/topics/0184_dp/index.html
Formula for capacitance:
>
http://www.microwaves101.com/encyclopedia/capacitormath.cfm#parallel
John Ferrell
Guest
Tue Jan 11, 2011 5:15 pm
On Mon, 10 Jan 2011 11:47:13 -0800 (PST), sinebar
<sinebar3770_at_gmail.com> wrote:
Quote:
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?
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
Sjouke Burry
Guest
Tue Jan 11, 2011 5:37 pm
John Ferrell wrote:
Quote:
On Mon, 10 Jan 2011 11:47:13 -0800 (PST), sinebar
sinebar3770_at_gmail.com> wrote:
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?
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.
Baron
Guest
Tue Jan 11, 2011 10:39 pm
sinebar Inscribed thus:
Quote:
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?
Do you mean 7 nanofarad or 7000 picofarad ?
--
Best Regards:
Baron.
Michael A. Terrell
Guest
Wed Jan 12, 2011 12:10 am
Baron wrote:
Quote:
sinebar Inscribed thus:
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?
Do you mean 7 nanofarad or 7000 picofarad ?
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.
Spehro Pefhany
Guest
Wed Jan 12, 2011 4:38 am
On Mon, 10 Jan 2011 11:47:13 -0800 (PST), the renowned sinebar
<sinebar3770_at_gmail.com> wrote:
Quote:
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?
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
--
"it's the network..." "The Journey is the reward"
speff_at_interlog.com Info for manufacturers:
http://www.trexon.com
Embedded software/hardware/analog Info for designers:
http://www.speff.com
sinebar
Guest
Wed Jan 12, 2011 5:23 am
On Jan 11, 3:39 pm, Baron <baron.nos...@linuxmaniac.nospam.net> wrote:
Quote:
sinebar Inscribed thus:
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?
Do you mean 7 nanofarad or 7000 picofarad ?
--
Best Regards:
Baron.
Yes I mean 7 nanofarad.
John Ferrell
Guest
Wed Jan 12, 2011 5:07 pm
On Tue, 11 Jan 2011 17:37:41 +0100, Sjouke Burry
<burrynulnulfour_at_ppllaanneett.nnll> wrote:
Quote:
John Ferrell wrote:
On Mon, 10 Jan 2011 11:47:13 -0800 (PST), sinebar
sinebar3770_at_gmail.com> wrote:
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?
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.
My error!
You are correct...
John Ferrell W8CCW
