Electronics homework (capacitors and resistors)

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Homework Help Overview

The discussion revolves around determining the impedance of a circuit involving capacitors and resistors. The original poster is exploring equivalent circuit configurations and their implications on impedance calculations.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • The original poster attempts to identify equivalent circuit configurations but is uncertain about the arrangement of components (parallel or series). They also express confusion regarding the application of Kirchhoff's equations and the number of equations needed to solve the problem.

Discussion Status

Participants are actively engaging with the original poster's queries. One participant suggests revisiting the concepts of equivalent impedance in parallel and series circuits, while another introduces the idea of node voltage analysis as a potential approach. There is no explicit consensus on the best path forward, but multiple lines of reasoning are being explored.

Contextual Notes

There appears to be a lack of clarity regarding the term "zeq" and its relevance to the discussion. The original poster also notes a challenge in applying Kirchhoff's equations due to an insufficient number of equations relative to unknowns.

BOBAH
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Homework Statement



What is the impedance of the circuit?
attachment.php?attachmentid=29325&d=1287789375.png


Homework Equations



Z=1/iwC ... Z = R ... etc..

The Attempt at a Solution



What kind of equivalent circuit can i replace it with ? I tried only two resistors and two capacitors first .. then upgrade it by two resistors and one capacitor (etc..), but can not figure out if this upgrade is parallel or in series?
 
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I tried to attach the picture...
attachment.php?attachmentid=29325&d=1287789375.png
 

Attachments

  • electrodes.png
    electrodes.png
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It's not in parallel or series. You will have to go back and see how it is that parallel and series produce such easy zeqs, and then apply those zeq ideas to this zeq. This is almost the transmission line model, so if you get stuck you can maybe find a bit about this configuration from transmission ideas.
 
THank you for your suggestion, Mindscape.
what is "zeq" ? I googled and did not find this word.
Where shall I go back to see how parallel and series will produce smth similar??
I tried to apply Kirchhoff eqns, but i1+i2=i3 ... and V1+V2+V3+V4 = 0... so I have n unknown and n-1 equations... One equation is missing and I am not sure where shall I take it from?
 
Zeq would be equivalent impedance. I might have just made it up, but if it doesn't exist then it certainly should. Try using node voltage analysis on the first quadrant, and see if you can discover a general formula.
 

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