Understanding Transmission Line Impedance and Voltage Distribution

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Discussion Overview

The discussion revolves around the calculation of voltage at a specific point along a transmission line, particularly focusing on the implications of different characteristic impedances and their effects on voltage distribution. The context appears to be homework-related, with participants seeking clarification on their calculations and assumptions regarding transmission line theory.

Discussion Character

  • Homework-related, Technical explanation, Debate/contested

Main Points Raised

  • One participant expresses confusion over their calculated voltage at a load positioned at (landa/4) from the generator, noting a discrepancy with their teacher's result.
  • Another participant suggests that the original post appears to be homework and implies it should be categorized accordingly.
  • A different participant questions the use of "√2Z0" in the context of characteristic impedance, proposing a change to the source and load impedances to avoid errors in calculations.
  • The original poster clarifies that the problem assumes the characteristic impedance of the line is Zc=√2Z0, indicating that the other values do not need to be altered.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the correct approach to the problem, with differing views on the appropriate values for characteristic impedance and their implications for the calculations.

Contextual Notes

There are unresolved assumptions regarding the definitions of characteristic impedance and how they relate to the calculations being performed. The discussion reflects uncertainty about the correct application of these concepts in the context of the problem.

baby_1
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Moved from another forum, so homework template missing
Hello
In this problem I tried to find the voltage at 2Z0 (load) that is (landa/4) from generator.My result it is different from teacher's result.what is my mistake?
(I named V1e as A point and V2e as B point so the voltage across the B point is (Vs/4) according to Zin=Z0 that is the same as Z0 of generator's impedance)
8767268700_1446709956.png

my solution:
2212861200_1446709955.jpg

Any helo would appreciate
 
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looks like homework, should have been in that section
 
  • Like
Likes   Reactions: DrClaude
Why does it say "√2Z0" in the middle of the line? The chas. impedance of the line is by definition Z0.
So change your source impedance to Z0/√2 and your load impedance to √2Z0 or you're going to get mighty messed up.
 
Dear rude-man
Thank you for accompanying me
In this problem it assumes that Zc=√2 Z0 it means that the characteristic impedance of line is Zc not Z0 and the other values are Z0 and 2Z0 they don't need to be changed
 

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