Lecture (L3-5) Thevenin and Norton Equivalent Circuits
- Due Sep 30, 2021 by 11am
- Points None
Many circuits are very complex and difficult to analyze. Or, we may have a circuit in a box where we can measure the outputs, but don't know what is inside the box. Thevenin/Norton equivalent circuits let us combine all of the complex or hidden parts of the circuit into a single 'black box' equivalent circuit, thus simplifying our analysis considerably.
Questions of the Day (Learning Objectives)
- What are Thevenin and Norton Equivalent Circuits, and how to you apply them in circuit analysis?
- How do you find a Thevenin equivalent?
Readings & Reference Materials
Textbook Section: Chapter3-5
Thevenin and Norton Cookbook.pdf Download Thevenin and Norton Cookbook.pdf
Lectures
Video Lectures:
https://www.youtube.com/watch?v=2N2TE-HP-j8 (Links to an external site.)
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http://youtu.be/WBPBkNFNeBw (Links to an external site.)
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Note: The 68 V independent source should have been turned off in the following video (but the dependent source stays on) when the 1 V source is connected at the output terminals. Here are the corrected equations for finding R_Th:
ECE1250_NC_Lect3-5_Correction.pdf Download ECE1250_NC_Lect3-5_Correction.pdf
http://youtu.be/fUqX62tbrxE (Links to an external site.)
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http://youtu.be/8xB9NFet8ak (Links to an external site.)
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Self-Assessment: ECE1250_Assess3_5.pdf Download ECE1250_Assess3_5.pdf
Extra Examples
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Additional Video Lectures:
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Thévenin Equivalent Circuit with a Practical Example(戴维南等效电路及实例)
Here is another explanation from Dr. Lee Brinton (SLCC):
Introduction to Thevenin equivalent circuits
http://www.youtube.com/watch?v=fQzItezCjMU (Links to an external site.)
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Techniques to determine the Thevenin model
http://www.youtube.com/watch?v=CTOlYfk5d8U (Links to an external site.)
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Additional Reference Videos (examples) :
Thevenin Example 1
http://www.youtube.com/watch?v=GbquCZ_UOk4 (Links to an external site.)
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Thevenin Example 2
http://www.youtube.com/watch?v=iFP17nJiCqk
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Tutorials and More Examples from GA Tech. (Links to an external site.)
Example Problems
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ECE1240 Thevenin Links to an external site.
Also work through the examples from class. Their solutions are below:
ClassNotes 9a Thevenin Dependent 2.pdf Download ClassNotes 9a Thevenin Dependent 2.pdf
ECE1250F15_FinalEx2p3soln.pdf Download ECE1250F15_FinalEx2p3soln.pdf
ECE1250F15_Ex2p3soln.pdf Download ECE1250F15_Ex2p3soln.pdf
ECE1250F14_FinalEx2p3soln.pdf Download ECE1250F14_FinalEx2p3soln.pdf