[SI-LIST] Re: capacitor impedance in time domain

Hi,
I could be wrong
but to me 
impedance is a concept strongly related to Frequency domain.

It is meaningful just in that domain.

When the excitation is not sinusoidal
one need to use  in a more genral Fourier or Laplace domain
but still Frequncy domain is still the appropiate environnement.

Hope this help

Giancarlo




________________________ 
----- Original Message ----- 
From: "group_delay" <group_delay@xxxxxxxxx>
To: <si-list@xxxxxxxxxxxxx>
Sent: Tuesday, January 25, 2005 11:11 PM
Subject: [SI-LIST] capacitor impedance in time domain



Hello,

I am trying to see what kind of an impedance a capacitor will present
to a trapezoidal signal (finite rise time square wave). For a sine
wave, we all know it is Z = 1/jwC. I need to know this because, I want
to find the reflected (from load) waveform magnitude in the following
situation:

source --> 50 ohm termintion--transmission line--capacitor shorted to
GND.

Thanks.



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