EE201 Circuit Theory Introduction Electrical Engineering, KAIST Instructor & TA Instructor: Seung-Tak Ryu (류승탁) • • Office: E3-2, #4225 (Phone: 7425) Email: stryu@kaist.ac.kr Teaching Assistants (E3-2, #4224, T.7625) • Representative: Younghun Moon (문영훈), monaten@kaist.ac.kr 2 Class Information Textbook • • Classroom and class hours • • Engineering Circuit Analysis, 12th edition (International adaptation). by David Irwin and Robert Nelms, Wiley. Recommended problems from 10th edition E11 (Creative Learning Bldg) Terman Hall Tue/Thu 9:00 ~ 10:30am Website for material download • http://klms.kaist.ac.kr Circuit Theory (EE201) 3 Grading Policy Midterm: 35% Final: 35% Quiz: 30% • • • Total 4 quizzes One worst result will be excluded and top 3 results will be counted Problems from the problem sets in the 10th edition. Attendance • • • -1 point/absence out of the total score of 100 For lectures in VOD form, access to the lectures will be checked Effective from March 5th (2nd week) 4 Course Objective and Topics Course Objective • To introduce undergraduate students to fundamental concepts and knowledge of linear electric circuits, circuit elements, and analysis techniques Topics Covered • • • Linear Circuit Elements: Resistors, Capacitors, Inductors, Transformers, Operational Amplifiers Linear Electric Circuits: Resistive Circuits, 1st- and 2nd-Order Transient Circuits, MagneticallyCoupled Circuits, Filter Circuits Key Laws and Analysis Techniques: Ohm’s Law, Kirchhoff’s Laws, Nodal Analysis, Loop Analysis, Superposition, Thevenin’s Theorem, Norton’s Theorem, AC Steady-State Analysis (Phasors), Steady-State Power Analysis, Variable Frequency-Response Analysis 5 Electric Circuits Closed interconnection of electrical elements through which an electrical current flows Simple linear electric circuits with passive elements (resistors, capacitors, inductors, transformers, etc.) cf) Electronic circuits with passive elements and active elements (diodes, bipolar junction transistors, metal-oxidesemiconductor field-effect transistors, etc.) cf) Passive: signal attenuation, power consumption Active: signal amplification, power generation 6 Circuit Analysis Develop a mathematical model (a set of mathematical equations) that represent the circuit • • • • Ohm’s law & Kirchhoff’s law Nodal analysis technique & loop analysis technique Superposition Thevenin’s theorem & Norton’s theorem Solve the model to determine how the circuit will behave in a given situation by using mathematical tools • Linear algebra • Differential equations • Complex analysis 7 Example of Electric (Electronic) Circuits AM radio – Circuit design with transistors? Electronic circuits (EE304, EE403) 8 Example of Electric Circuits Iphone, Integrated circuits on PCboard 9 Example of Electric Circuits 10 Example of Electric Circuits Medical device 11 Introduction Electrical elements in this course – – – – Resistor (R), Capacitor (C), Inductor (L) Voltage/current sources (independent, dependent) Operational amplifier (briefly, as a black box) Transformer In Electronic Circuits (EE304) – – – – Diode Transistors (Bipolar, MOSFET) Simple amplifier designs Operational amplifier using transistors Electronic Circuits Circuit theory 12 Relations with Other Subjects 13 Course Map: Part1 - DC Circuits Ch1: Basic concepts Ch2: Resistive circuits Ch3: Network theorems Ch4: Operational amplifiers Ch5: Capacitance and inductance Ch6: First- and second- order transient circuits 14 Course Map: Part2 - AC Circuits Ch7: Sinusoidal steady-state analysis Ch8: Steady-state power analysis Ch11: Variable-frequency network performance Ch9: Magnetically coupled networks 15 Course Map: Part3 – Laplace Transform Ch12: The Laplace transform Ch13: Application of the Laplace transform to circuit analysis 16 Course Schedule (Tentative) 2024 Spring Week, Date Main Contents Remarks 1 2/27, 29 Introduction, CH1. Basic Concepts 2 3/5, 3/7 CH2. Resistive Circuits 3 3/12, 3/14 CH3. Nodal and Loop Analysis Techniques 4 3/19, 3/21 CH3. Nodal and Loop Analysis Techniques Quiz #1 5 3/26, 3/28 CH4. Operational Amplifiers Online VoD lecture 6 4/2, 4/4 CH5. Capacitance and Inductance 7 4/9, 4/11 CH6. 1st and 2nd –order Transient Circuits 8 4/16, 4/18 Mid-Term exam 9 4/23, 4/25 CH7. AC Steady-State Analysis 10 4/30, 5/2 CH8. Steady-State Power Analysis 11 5/7, 5/9 CH9. Magnetically Coupled Networks 12 5/14, 5/16 CH11. Variable-Frequency Network Performance 13 5/21, 5/23 CH11. Variable-Frequency Network Performance 14 5/28, 5/30 CH12. Laplace Transform (LT) 15 6/4, 6/6 CH13. Application of the LT to Circuit Analysis 16 6/11, 6/13 Final exam Quiz #2 Online VoD lecture Quiz #3 Quiz #4 17