| Topic: |
Science > Physics |
| User: |
"" |
| Date: |
14 Oct 2005 12:29:35 AM |
| Object: |
capacitor discharge |
sir,
I have a dout about capacitor discharge.Can a charged capacitor
discharge by connecting its one terminal and ground without using its
other terminal.
.
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| User: "CWatters" |
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| Title: Re: capacitor discharge |
14 Oct 2005 03:22:28 AM |
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<anilmanual@gmail.com> wrote in message
news:1129267775.106192.164620@f14g2000cwb.googlegroups.com...
sir,
I have a dout about capacitor discharge.Can a charged capacitor
discharge by connecting its one terminal and ground without using its
other terminal.
What do you mean by ... "without using its other terminal"?
Both terminal have a capacitance to ground so..
before...
_____| |_____
| | | |
| |
----- -----
----- -----
| |
| |
--- ---
- -
and after...
_____| |_____
| | | |
| |
----- |
----- |
| |
| |
--- ---
- -
.
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| User: "Androcles Androcles@ MyPlace.org" |
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| Title: Re: capacitor discharge |
14 Oct 2005 03:44:25 AM |
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"CWatters" <colin.watters@pandoraBOX.be> wrote in message
news:8VJ3f.22879$NF4.871539@phobos.telenet-ops.be...
|
| <anilmanual@gmail.com> wrote in message
| news:1129267775.106192.164620@f14g2000cwb.googlegroups.com...
| > sir,
| > I have a dout about capacitor discharge.Can a charged capacitor
| > discharge by connecting its one terminal and ground without using
its
| > other terminal.
|
| What do you mean by ... "without using its other terminal"?
|
| Both terminal have a capacitance to ground so..
|
| before...
|
|
| _____| |_____
| | | | |
| | |
| ----- -----
| ----- -----
| | |
| | |
| --- ---
| - -
|
|
| and after...
|
|
| _____| |_____
| | | | |
| | |
| ----- |
| ----- |
| | |
| | |
| --- ---
| - -
So?
The question was "Can a charged capacitor discharge by connecting its
one terminal and ground without using its other terminal.[?]"
You've not answered it.
The correct answer is: Theoretically, NO. In practise, a small current
will leak
via humidity in air and through the dielectric of the capacitor. This is
independent
of a ground connection to one terminal. Charge a 1000 microfarad
capacitor to
9V or 12V using a battery, then apply a voltmeter to it's terminals a
week later,
it will still read 9V and slowly discharge through the voltmeter.
Androcles.
.
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| User: "" |
|
| Title: Re: capacitor discharge |
14 Oct 2005 04:06:49 AM |
|
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Sir,
If we touch one terminal of the charged capacitor , is current flow
through our body to the ground without any contact with other terminal.
.
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| User: "Androcles Androcles@ MyPlace.org" |
|
| Title: Re: capacitor discharge |
14 Oct 2005 09:05:25 AM |
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<anilmanual@gmail.com> wrote in message
news:1129280809.051173.160520@f14g2000cwb.googlegroups.com...
| Sir,
| If we touch one terminal of the charged capacitor , is current flow
| through our body to the ground without any contact with other
terminal.
http://www.ibiblio.org/obp/electricCircuits/AC/AC_1.html
Androcles.
.
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| User: "oldton" |
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| Title: Re: capacitor discharge |
14 Oct 2005 09:43:31 AM |
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|
the site u've mentioned deals w/ AC circuits(LC,RC,LRC). doesnt really
clear his 'dout'
.
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| User: "" |
|
| Title: Re: capacitor discharge |
14 Oct 2005 04:40:22 PM |
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"Sir,
If we touch one terminal of the charged capacitor , is current flow
through our body to the ground without any contact with other
terminal."
No. Current flow reqires a complete electrical path. If you wish to
discharge the charge stored in the capacitor, you have to provide at
path for the current to conduct between its terminals. This is not a
matter of conjecture, but a matter of fact as taught in any EE 101
program at any college in the world, plus already known by most
highschool students even before they hit college unless of course they
are 'wanna-be' beauticians or football jocks! Sheesh.
Curmudgeonly yours, Harry C.
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| User: "" |
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| Title: Re: capacitor discharge |
14 Oct 2005 04:30:23 PM |
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No, despite the endless pontification many clueless individuals, the
charge on a capacitor is maintained between its two plate, and the
distarge of its stored charge (energy) requires an electrical
connection of some sort to exist between each of it's two plates. Of
course leakage can provide this discharge path, but normally a more
direct route exists.
Harry C.
.
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| User: "Helmut Wabnig EmailAddress" |
|
| Title: Re: capacitor discharge |
14 Oct 2005 01:56:46 AM |
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On 13 Oct 2005 22:29:35 -0700, wrote:
sir,
I have a dout about capacitor discharge.Can a charged capacitor
discharge by connecting its one terminal and ground without using its
other terminal.
It will eventually, due to small currents loss in the isolating
dielectricum
and along the outer surface from one pole to the other
w.
.
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| User: "John C. Polasek" |
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| Title: Re: capacitor discharge |
14 Oct 2005 09:40:25 AM |
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On 13 Oct 2005 22:29:35 -0700, wrote:
sir,
I have a dout about capacitor discharge.Can a charged capacitor
discharge by connecting its one terminal and ground without using its
other terminal.
No.
John Polasek
http://www.dualspace.net
.
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| User: "oldton" |
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| Title: Re: capacitor discharge |
14 Oct 2005 09:35:02 AM |
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wats 'without using the other terminal' mean?
anyway from wat i think it means, i think an ideal (abstract) capacitor
wont discharge. in pratice it will
.
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