I need help with laplace transform

Thread Starter

rd572

Joined Nov 27, 2017
2
Good day.
I have problem with a laplace transform.
I want the IR(s) back to time domain. Current starts with 0[A] and the SW will close at t=0.

I have tried calculating for several times but I get the wrong answer
(2/3)*E*L( 1-exp( -(3R/2L)t ) )
for all attempt.

I want to know how to return IR(s) to the time domain.

thank you
 

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wayneh

Joined Sep 9, 2010
16,390
Good day.
I have problem with a laplace transform.
I want the IR(s) back to time domain. Current starts with 0[A] and the SW will close at t=0.

I have tried calculating for several times but I get the wrong answer
(2/3)*E*L( 1-exp( -(3R/2L)t ) )
for all attempt.

I want to know how to return IR(s) to the time domain.

thank you
You will likely get more feedback if you show your work so far.
 

Thread Starter

rd572

Joined Nov 27, 2017
2
You will likely get more feedback if you show your work so far.
First, thank you for the reply.
And about my work so far. I`m so sorry that I got the correct answer when I tried again this morning.

Thanks for the reply and advice about using this forum.
 

WBahn

Joined Mar 31, 2012
25,785
Be sure to sanity check your answer.

You know by inspection what the initial and final currents are. Be sure your answer agrees with that.

You should also be able to write down the full solution inspection for a circuit like this, so be sure to compare that to your answer and make sure they agree.
 
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