Basic Circuit Theory: Introduction to Electrical and Electronic Engineering, Exercises of Circuit Theory

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Basic Circuit Theory

Woo-Young Choi

Dept. of Electrical and Electronic Engineering

Yonsei University

Lecture 1: Introduction

Why study Basic Circuit Theory

Rapid increase in understanding of electricity in 18,19th century

è The most basic course in Electrical/Electronic Engineering

• History of Electrical/Electronic Engineering Electric battery (Voltaic pile) invented in 1799 Alessandro Volta (1745 – 1827)

Michael Faraday (1791-1867) Faraday’s Law discovered in 1831 B E t ¶ Ñ ´ = - ¶ C Joseph Henry ( 1797 - 1878) Invention of electromachanical relay in 1835 L

C L In this course, Operational Amplifier è Linear Circuits (Linearity: Signals and Systems) (No transistors: Electronic Circuits)

• History of Electrical/Electronic Engineering Invention of Incandescent light bulb By Thomas Edison in 1880 Demands for electricity generation, transmission, and distribution to every house

è Appearance of Electric Power Industry

First public power station: The Edison Electric Light Station in 1882

è Rapid increase in application of electricity

Rapid increase in understanding of electricity in 18,19th century Edison Lamp Company, Edison Machine Works è Edison General Electric Company

• Why study Basic Circuit Theory è Appearance of Electrical Engineering : Electrical Engineering Option within Physics Dept. at MIT in 1882 (became a new department in 1902) è In 1892, EE students are roughly 27% of MIT students A key subject in Electrical Engineering:
• History of Electrical/Electronic Engineering Rapid increase in understanding of electricity in 18,19th century

Rapid increase in application of electricity è Industries

Electric circuits Also EE Department in Technical University of Darmstadt founded in 1883

How about Electronic Engineering?

Need for amplification and processing of electrical signals

Invention of wireless telegraphy by Guglielmo Marconi in 1894 Public radio broadcast (NYC) in 1910 First TV broadcast in 1928

Vacuum tube amplifiers Fleming Tube in 1904 Triode Vacuum Tube (Audion) in 1906 Lee De Forest (1873-1961) ENIAC in 1946

• Circuit Elements
• Kirchhoff Law (KCL, KVL)
• Circuit Analysis Techniques (NVM, MCM, Eq. Circuits)
• Operational amplifier
• Inductor, Capacitor
• First order response (RL, RC circuits)
• 2 nd order response (RLC circuits)
• Sinusoidal steady-steady (SSS) response
• Impedance model, Power calculation
• Frequency selective circuits (Filters)
• Bode Plot
• Active filter circuits
• Topics covered in this course

● Teaching Staffs

• T.A.'s: Keebong Hyun (현기봉) Room: C531, Tel: 02- 2123 - 7709 Email: [email protected]
• Lecturer: Prof. Woo-Young Choi (최우영) Room: C525, Tel: 02- 2123 - 2874 Email: [email protected], Web: tera.yonsei.ac.kr ● Prerequisites
• Freshman Physics (일반물리)
• Freshman Mathematics, Differential Equations (공학수학3) Jae Ho Lee (이재호) Room: C531, Tel: 02- 2123 - 7709 Email: [email protected]

● Textbook: ● Grades

• Mid-term Exam: 30% ● References: Many available on-line
• Final Exam: 30%
• Class Participation: 10% (9- 11 am, Apr. 20 ,, Tue., Open book) (9- 11 am, Jun. 8 , Tue., Open book)
• Attendance (Homework hand-in): 30% Your participation in LearnUs Q&A, Discussion Session will be evaluated No late hand-in for homework allowed Electric Circuits by Nilsson and Riedel (11th Edition) è N&R Class Notes: PDF file will be uploaded every Thursday together with recorded lecture materials
• Automatic attendance check by Zoom Discussion Session Incomplete homework will be counted as late attendance è 2 late attendance = 1 absence

● Zoom Meeting Informal Zoom meeting with the professor and fellow students will be held on Thu. from 11 : 00 - 11 : 50 am, starting 3 / 18. Schedule will be posted. ● Final Letter Grade A: 30~40% B: 30~40% Details will be determined based on the overall performance and score distribution