Electrical Engineering - circuits - Reactive Networks

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Discussion Overview

The discussion revolves around a homework problem related to reactive networks in electrical engineering, specifically focusing on phasor analysis, Thevenin and Norton equivalents, and circuit behavior under different loads. Participants are exploring calculations for phasor voltages and currents, as well as the implications of circuit configurations on these values.

Discussion Character

  • Homework-related
  • Technical explanation
  • Debate/contested
  • Mathematical reasoning

Main Points Raised

  • One participant presents initial calculations for phasor voltage and current, expressing uncertainty about their correctness.
  • Another participant confirms the voltage source phasor but challenges the Cartesian form of the current source, suggesting a sketch for verification.
  • Questions arise about the presence of a short circuit in the circuit diagram, with participants confirming its existence.
  • There is a discussion on the procedure for determining Thevenin equivalents, with participants sharing steps but also expressing uncertainty about the process.
  • Participants debate the correct approach to calculating Thevenin voltage and impedance, with suggestions to use various techniques including voltage dividers.
  • One participant calculates a high voltage from a current source and resistor in series, questioning its validity given the voltage source's output.
  • Clarifications are made regarding the distinction between voltage and current, with participants correcting each other's terminology and understanding of circuit behavior.
  • There is a consensus that the voltage produced by the current source and resistor does not affect the voltage produced by the voltage source due to circuit isolation from the short circuit.

Areas of Agreement / Disagreement

Participants generally agree on the existence of a short circuit and its implications for circuit independence, but there are multiple competing views on the correct calculations and procedures for determining Thevenin and Norton equivalents. The discussion remains unresolved regarding the specific calculations and their accuracy.

Contextual Notes

Participants express uncertainty about the correct application of Thevenin's theorem and the impact of circuit components on voltage and current calculations. There are unresolved details regarding the assumptions made in calculations and the specific configurations of the circuit elements.

  • #61
Your Thevenin Impedance ##Z_T## looks very odd. Where did it come from ?
 
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  • #62
I added the impedance of the capacitor and inductor, is this not the correct method?
 
  • #63
Frankboyle said:
I added the impedance of the capacitor and inductor, is this not the correct method?
We examined that before. How are those components connected to each other when the voltage supply is suppressed?
 

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