Circuit analysis, determing impendance.

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Discussion Overview

The discussion revolves around determining the impedance of a specific circuit, focusing on the application of circuit analysis techniques and the use of relevant equations. Participants explore the calculations involved and the challenges faced in arriving at the correct impedance value.

Discussion Character

  • Homework-related

Main Points Raised

  • One participant presents an equation for calculating impedance and expresses difficulty in obtaining the correct answer.
  • Another participant confirms that their own calculations yield the same result and questions why the first participant believes their answer is incorrect.
  • A later reply indicates that the initial participant found an error in their Laplace transformation, which led to the correct answer being identified.
  • Participants express appreciation for the collaborative effort in troubleshooting the problem.

Areas of Agreement / Disagreement

Contextual Notes

The discussion highlights the importance of careful step-by-step verification in circuit analysis, particularly when applying transformations and calculations.

Who May Find This Useful

Students and individuals interested in circuit analysis, particularly those working on homework problems related to impedance calculations.

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Homework Statement



I need to find the impedance of the following circuit:
1zsysg.jpg


Homework Equations



[tex]\frac{1}{Z_eq}=\frac{1}{Z_1}+\frac{1}{Z_2}[/tex]
[tex]Z=R[/tex]
[tex]Z=\frac{1}{i \omega C}[/tex]

The Attempt at a Solution



This should be really simple, but I seem to have some troubles. So: [tex]\frac{1}{R}+i \omega C=\frac{1+i \omega CR}{R}[/tex] and then [tex]Z_eq=\frac{R}{1+i \omega CR}[/tex]. But the answer seems to be wrong.
 
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That's the answer I got when I calculated it. I tried it with test values it was consistent. Why do you think it's wrong?
 
mplayer said:
That's the answer I got when I calculated it. I tried it with test values it was consistent. Why do you think it's wrong?

As I said this should be really simple, I just get the wrong answer for the calculation, that this impedance is part of. Maybe it helps if I post the whole problem?

Edit: I found out my Laplace tranformation for the circuit was wrong. I got the right answer now. Thank you.
 
Last edited:
Sorry I couldn't help more. Glad you figured it out :biggrin:
 
You did plenty enough. I was sure the problem was there, but your confirmation made go trough every step. Thank for the help!
 

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