lecture-09-28 - 9/28/2011 1 ME-340 Circuits &...

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Unformatted text preview: 9/28/2011 1 ME-340 Circuits & Mechatronics Lecture # 15 2010.09.28 Reminder: Quiz • Quiz: Fr 9/30 in class, Ch. 3, 4 3 New Problem Homework (Due We 10/05 in class) • Hambley 5 th edition, Chapters 5, Problems (4): Circuit analysis: 5.49, 5.52 Power in AC circuits: 5.67 Thevenin/Norton Equivalent Circuits: 5.89 • Hambley 5 th edition, Chapters 6, Problems (6): Transfer function: 6.11 1 st order lowpass: 6.33 Log scales: 6.40, 6.41 Bode plots: 6.54, 6.57 4 Reminder Chapter Reading Homework (Due Fr. 09/30 in class) • Read chapter 6 • Summarize each chapter in 10 lines • Return it in class 5 9/28/2011 2 Due Problem Homework • Hambley 5 th edition, Chapters 4, Problems (6): RC: 4.6, 4.11 DC steady state: 4.26 RL: 4.34 General sources: 4.47 2 nd order ODE: 4.64 • Hambley 5 th edition, Chapters 5, Problems (3): RMS: 5.13 Phasors: 5.29 Complex impedances: 5.37 6 Video (play first 2 minutes) 7 http://www.youtube.com/watch?v=dx0zxr3D_zU Today 8 Schedule 9 9/28/2011 3 Sinusoidal Circuit Analysis with Phasors & Complex Impedances 1. Replace Voltage & Current Sources with Phasors 2. Must Have Same Angular Frequency 3. Replace Inductors with Complex Impedance j L 4. Replace Capacitors with Complex Impedance (1/j C) 5. Analyze Circuit Using Ohm’s Law, KVL & KCL Comment: For sinusoidal excitations of circuit, can analyze L’s & C’s like R’s, & avoid solving differential equations Example 5.4: AC Analysis of Series Circuit Using Phasors 45 4 . 141 100 100 50 150 100 , 30 100 KVL, Using j j j Z C j L j R Z Z Z Z V Z V I eq C L R eq s eq s e j t implicit!...
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This note was uploaded on 02/07/2012 for the course M E 340 taught by Professor Staff during the Spring '08 term at University of Texas.

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lecture-09-28 - 9/28/2011 1 ME-340 Circuits &...

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