Time domain equation for RC circuit with AC input

  • #1
eyeweyew
27
5
Schoolwork-type thread moved from the techincal forums to the schoolwork forums
TL;DR Summary: How to find Time domain equation for RC circuit with AC input from inverse laplace transform

For a simple RC circuit with AC input such as this: https://www.electronics-tutorials.ws/wp-content/uploads/2013/08/rc12.gif?fit=310,151?fit=310,226. If the AC input is just a simple sinusoidal vI(t)=Vicos(ωt) and the transfer function is Vo/Vi=1/(1+sRC). The inverse Laplace transform of Vo/Vi is e-t/RC/RC. How exactly do I find the Time domain equation for vO(t) from this inverse laplace transform? I cannot seem to find any reference to show how to do that.
 
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  • #2
1705889727687.png
 
  • #3
Have you tried searching the web for this. I looked for "solve RC circuit with Laplace transforms" and got lots of links that looked good.

Is this a home work problem? At what point in the analysis are you getting confused? Can you show us what you've tried so far?
 
  • #4
If ##\frac{V_o(s)}{V_i(s)} = \frac{1}{(1+sRC)}## then ##V_o(s) = \frac{1}{(1+sRC)} V_i(s) ##

## v_o(t) = \mathcal L^{-1}(V_o(s)) = \mathcal L^{-1}(\frac{1}{(1+sRC)} V_i(s)) ##

What is ## V_i(s) ##?
 
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Likes eyeweyew and Delta2
  • #5
I think I got it. Thanks!
 
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Likes DaveE

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