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Joules - Vrms or Vp (fwd)
---------- Forwarded message ----------
Date: Wed, 29 Jul 1998 01:30:54 -0500
From: Shaun <shaunobrien-at-geocities-dot-com>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Joules - Vrms or Vp (fwd)
I forgot is C in Farads for this equation? I would think
that you would want to use Vp. RMS would give you a lower
figure that would be incorrect, as the cap is charging to Vp
and not rms.
-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Tuesday, July 28, 1998 11:27 AM
Subject: Re: Joules - Vrms or Vp (fwd)
>---------- Forwarded message ----------
>Date: Tue, 28 Jul 1998 16:08:30 +0000
>From: steinkamp <steinkamp-at-iee.uni-hannover.de>
>To: Tesla List <tesla-at-pupman-dot-com>
>Cc: steinkamp-at-iee.uni-hannover.de
>Subject: Re: Joules - Vrms or Vp (fwd)
>> Date: Mon, 27 Jul 1998 20:56:44 -0600 (MDT)
>> To: tesla-at-pupman-dot-com
>> Subject: Joules - Vrms or Vp (fwd)
>> From: Tesla List <tesla-at-pupman-dot-com>
>> ---------- Forwarded message ----------
>> Date: Mon, 27 Jul 1998 18:30:28 -0500
>> From: "Barton B. Anderson" <mopar-at-uswest-dot-net>
>> To: Tesla List <tesla-at-pupman-dot-com>
>> Subject: Joules - Vrms or Vp
>>
>> To List,
>>
>> Regarding the calculation for Joules..... J = 1/2 x C x
>> V^2.
>>
>> Should V = Vp or should V = Vrms? Why? (if you know).
>>
>> All responses welcome,
>>
>> Bart
>>
>> Hi bart,
>
>if yu regard the energy of a capacitor with DC and voltage V
>
>yu get J = 1/2 C*V^2.
>
>regarding the problem using AC-Voltage yu get a changing value for J
>from 0 to max = 1/2 C*Vp^2.
>It is Jmax = 1/2 C*Vp^2 = C*Vrms^2.
>okay?
>
>regards stone
>
>Dr. Wolfram Steinkamp, Akad. Oberrat
>Institut fuer Elektrische Energieversorgung
>Universitaet Hannover
>Fax.: 0511 762 2369
>Tel.: 0511 762 2305 (2804)