[Circuits] Finding maximum power

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SUMMARY

The discussion focuses on finding the Thévenin equivalent circuit across a load resistor (RL) and determining the value of RL for maximum power transfer. The final calculations yielded a Thévenin resistance (Rth) of 2.933 ohms and a maximum power transfer of 150.8 mW. The participant also referenced using MultiSim for verification of other practice questions but could not use it for this specific problem, highlighting the need for manual verification of circuit analysis techniques.

PREREQUISITES
  • Understanding of Thévenin's Theorem
  • Basic circuit analysis skills
  • Familiarity with power transfer principles
  • Experience with circuit simulation tools like MultiSim
NEXT STEPS
  • Study Thévenin equivalent circuit calculations in detail
  • Learn about maximum power transfer theorem applications
  • Explore circuit simulation techniques using MultiSim
  • Practice solving similar circuit problems for reinforcement
USEFUL FOR

Electrical engineering students, circuit designers, and anyone preparing for exams in circuit analysis will benefit from this discussion.

ainster31
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Homework Statement



a. Find the Thevenin equivalent circuit across RL.
b. What is the value of RL for maximum power?
c. Calculate the maximum power that can be transferred to the resistor RL.

vHc0wIH.png


Homework Equations





The Attempt at a Solution



[strike]a. Rth=2.88 ohm
b. RL=2.88 ohm
c. P=154.3 mW[/strike]

Edit: looks like I found an error. Here is my second attempt:

a. Rth=2.933 ohm
b. RL=2.933 ohm
c. P=150.8 mW

I have a test upcoming and we were given this as a practice question. Unfortuantely, there is no answer so I don't know if I it is correct or not. Can anyone let me know if my answers are right? I used MultiSim to check the answers for my other practice questions and I found mistakes. I can't use MultiSim to check this one.

This is the other similar problem that I need to make sure I have done correctly: http://i.imgur.com/g2JaZXO.png

My answer: P=69.4 mW
 
Last edited:
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Had you provided your working, someone may have looked over it to see whether the approach was right.

A Thévenin equivalent requires a voltage source and a resistance.
 

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