simple circuit/laplace transform question

Semidevil

Diamond Member
Apr 26, 2002
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a 10 k-ohm, a 5 H inductor and a 20nF capacitor are in series.

exress the s-domain impedence of this series circuit as a rational function


so do I laplace transform the circuit first, or do I find the impedence first? how do I find the impedence if I have no frequency?

and if I laplace transform the circuit, I get a resistor, a voltage source, inducotr, a voltage sorce, and a capacitor. all in a series.

what can I do w/ that?

any idea on how to solve the problem
 

NutBucket

Lifer
Aug 30, 2000
27,179
649
126
Solve it in the S-domain right? So the impedance of the resistor is R, the inductor is sL and the capacitor 1/(sC). What kind of voltage source is it? What output are you looking for? Simplest thing to do would be to use do a voltage divider; find the current and proceed accordingly.
 

Semidevil

Diamond Member
Apr 26, 2002
3,017
0
76
the problem just gives the 3 elements, and no other informaion.........that's why I"m confused....no Voltage source or anything....
 

NutBucket

Lifer
Aug 30, 2000
27,179
649
126
Oh, then just add up the impedances and perform do the inverse laplace transform.