ENG17 (Sec. 2): Circuits I Spring 2014
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Transcript of ENG17 (Sec. 2): Circuits I Spring 2014
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Lecture 15:Extra More on Sinusoidal Steady-State Analysis & MT ReviewNilsson & Riedel 9.7-9.9, 9.12
ENG17 (Sec. 2): Circuits I
Spring 2014
May 20, 2014
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Overview
• Source Transformations
• Node-Voltage• Mesh-Current• Phasor Diagrams• MT Review
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Source Transformations
Same as before, but now with impedances
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Thevenin-Norton Equivalents
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Example
Find using source transformation
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Example
Find Thevenin Equivalent
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Overview
• Source Transformations
• Node-Voltage• Mesh-Current• Phasor Diagrams• MT Review
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Node-Voltage Example
Find Ia, Ib, Ic
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Overview
• Source Transformations
• Node-Voltage• Mesh-Current• Phasor Diagrams• MT Review
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Mesh-Current Example
Find Va, Vb, Vc
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Overview
• Source Transformations
• Node-Voltage• Mesh-Current• Phasor Diagrams• MT Review
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Phasor Diagrams
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Example
Use phasor diagram to find R that will cause resistor current (iR) to lag the source current (iS) by 45° when ω = 5 krad / s.
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Overview
• Source Transformations
• Node-Voltage• Mesh-Current• Phasor Diagrams• MT Review
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Difficulties
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Op Amp Circuits
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Sequential Switching
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Unbounded Response
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RLC Circuits
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Phasors
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Extra Office Hours
• Tomorrow, Wednesday• 3-5pm• Kemper 2101