ELEC2299-ECAD-03-GeneralMethod.pptx - ELEC2299 Electrical Circuit Analysis Design General Analysis Method Chapter 2 1 Review from Last Class KVL KCL 2

# ELEC2299-ECAD-03-GeneralMethod.pptx - ELEC2299 Electrical...

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September 14, 2018 ELEC2299 Electrical Circuit Analysis & Design General Analysis Method Chapter 2 10/30/18 1

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Review from Last Class 10/30/18 2 KVL KCL
The General Method 10/30/18 3 Solve for unknowns in a circuit 1.Identify and label nodes, branch currents, element voltages and UNKNOWNS! 2.Define (or assume) directions for voltage drops and currents 3. Write IV relationships for elements (Element Constraint Laws) For Example: Ohm’s Law 4. Write KVL and KCL equations (Connection Constraint Laws) Write KCL for nodes If there are n nodes, there will be (n-1) independent KCL equations Write KVL for loops If there are m essential loops, there will be m independent KVL equations 5. SOLVE for UNKNOWNS!

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1. Label 10/30/18 4 + - + -
1. Label 10/30/18 5 + - + - Node A Node B Node C Node D Loop 1 Loop 2

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1. Label 10/30/18 6 + - + - V S V R1 V R2 V R3 V R4 I 1 I 2 I 3 I 4 R 1 R 2 R 3 R 4 I S
2. Directions 10/30/18 7 + - + - V S + V R1 - + V R2 - + V R3 - + V R4 - I 1 I 2 I 3 I 4 I S R 1 R 2 R 3 R 4

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3. Element IV Relationships 10/30/18 8 + - + - V S =constant V R1 =I 1 R 1 V R2 =I 2 R 2 V R3 =I 3 R 3 V R4 =I 4 R 4
4A. KVL

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• Fall '12
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• SEPTA Regional Rail, Jaguar Racing, Electrical impedance, Series and parallel circuits, Electrical Circuit Analysis & Design

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