L05 Source Transforms

# L05 Source Transforms - EE 40 Source Transforms EE 40...

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EE 40 Source Transforms EE 40 Lecture 5: Source Transforms 1

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Ideal Sources Voltage Current EE 40 Lecture 5: Source Transforms 2 v 1 i 1 v 1 i 1
(More) Practical Sources Voltage Current EE 40 Lecture 5: Source Transforms 3 v 1 i 1 v 1 i 1

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Practical Sources Voltage Current EE 40 Lecture 5: Source Transforms 4 v 1 i 1 v 1 i 1 V Th I N R N V Th /R Th I N
Equivalence Voltage and current source are identical if I N = V Th /R Th V Th = I N R N implies R N = R Th From “outside box” cannot distinguish voltage from current source EE 40 Lecture 5: Source Transforms 5 v 1 i 1 v 1 i 1 V Th I N R N V Th /R Th I N

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What’s so great about this? 1. Circuit analysis In many situations, circuits can be analyzed much more easily by exploiting source equivalence 2. Modeling Many complex circuits can be described by an ideal source and resistor (e.g. sensor, radio antenna, …) Examples EE 40 Lecture 5: Source Transforms 6
Source Transform (Example) What is the power P 1 delivered by V 1 ?

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