Course title
F00130002
Transient Phenomena in Circuits

 LEE HEEYOUNG
Middle-level Diploma Policy (mDP)
Program / Major mDP Goals Courses
Information and Communications Engineering B-1 情報通信工学に共通する基礎的な概念を習得することができる。 Main
Urban Infrastructure and Environment G ⼟⽊⼯学における現実の問題について、⼯学・専⾨基礎知識を⽤いて理解・解決することができる。 Sub
Purpose of class
The purpose of this course is to help students to
(1) Understand how to express the transient phenomena in a circuit, propagation of electro-magnetic- and light-waves.
(2) Be able to calculate transient response of electrical signals by using first and second order differential equations.
(3) Be able to solve the equations analytically.
Course description
Transient phenomena is a rapidly changing action occurring in a circuit during the interval between initial-state and steady-state conditions. The aim of this course is to help students to understand the transient phenomena of a voltage and a current in a circuit and to be able to solve the problem. The methods to solve the problem are based on 1) differential equations and 2) the Laplace transform.
Goals and objectives
  1. Being able to express the transient phenomena with first and second order differential equations and to solve the equations.
  2. Being able to explain principles and applications of electrical circuits for differentiating and integrating signals with respect to time.
  3. Being able to explain the Laplace transform and to obtain the solutions of response signals in the case of inputting various signals which include unit impulse and rectangular pulse.
Relationship between 'Goals and Objectives' and 'Course Outcomes'

 Midterm exam Final exam Assignments Total.
1. 30% 5% 15% 50%
2. 5% 0% 0% 5%
3. 0% 30% 15% 45%
Total. 35% 35% 30% -
Evaluation method and criteria
Midterm exam 35%, final exam 35%, and assignments 30%. Total score of 60% is needed to get a credit.
Students can get the total score of 60% if they can solve half of the in-class exercises.
Language
Japanese
Class schedule

 Class schedule HW assignments (Including preparation and review of the class.) Amount of Time Required
1. Guidance
Overview 		Read the relevant parts of the handouts. 60minutes
Review what you have learned. 130minutes
2. Fundamentals for Transient Analysis
Circuit equations and first- and second-order differential equations
Exercises 		Read the relevant parts of the handouts. 60minutes
Review what you have learned. 130minutes
3. Response to DC Input (1)
Transient response of RC circuits
Exercises 		Read the relevant parts of the handouts. 60minutes
Review what you have learned. 130minutes
4. Response to DC Input (2)
Transient response of RL circuits
Exercises 		Read the relevant parts of the handouts. 60minutes
Review what you have learned. 130minutes
5. Response to Sinusoidal Input
Transient response of RC and RL circuits
Exercises 		Read the relevant parts of the handouts. 60minutes
Review what you have learned. 130minutes
6. Transient Response of RLC Circuits (1)
Response to DC input
(Overdamped, underdamped, critically damped cases)
Exercises 		Read the relevant parts of the handouts. 60minutes
Review what you have learned. 130minutes
7. Midterm Examination and Review Review what you have learned at the classes 1~6. 190minutes
8. Transient Response of RLC Circuits (2)
Response to sinusoidal input
Exercises 		Read the relevant parts of the handouts. 60minutes
Review what you have learned. 130minutes
9. Transient Response of Composite Circuits
Response of multi-energy-storage circuits 		Read the relevant parts of the handouts. 60minutes
Review what you have learned. 130minutes
10. Transient Analysis Using the Laplace Transform (1)
Overview of the Laplace transform and basic transforms
Exercises 		Read the relevant parts of the handouts. 60minutes
Review what you have learned. 130minutes
11. Transient Analysis Using the Laplace Transform (2)
Properties of the Laplace transform and inverse transform
Exercises 		Read the relevant parts of the handouts. 60minutes
Review what you have learned. 130minutes
12. Transient Analysis Using the Laplace Transform (3)
Solution of differential equations using the Laplace transform
Exercises 		Read the relevant parts of the handouts. 60minutes
Review what you have learned. 130minutes
13. Transient Analysis Using the Laplace Transform (4)
Application to circuit transient analysis
Exercises 		Read the relevant parts of the handouts. 60minutes
Review what you have learned. 130minutes
14. Final Examination and Review Review what you have learned at the classes 8~13. 190minutes
Total. - - 2660minutes
Feedback on exams, assignments, etc.
ways of feedback specific contents about "Other"
Feedback in the class
Textbooks and reference materials
Supplementary materials and handouts will be provided during the course.
Textbook: 森北出版　「過渡現象の基礎（第 2版）」　吉岡 芳夫・作道 訓之・大澤 直樹 著 (in Japanese).
Prerequisites
Students are expected to review the contents of the course “Circuit Theory” and the fundamentals of differential and integral calculus.
Office hours and How to contact professors for questions
  • Questions are accepted after class or by e-mail.
Regionally-oriented
Non-regionally-oriented course
Development of social and professional independence
  • Course that cultivates an ability for utilizing knowledge
Active-learning course
N/A
Course by professor with work experience
Work experience Work experience and relevance to the course content if applicable
N/A N/A
Education related SDGs:the Sustainable Development Goals
  • 9.INDUSTRY, INNOVATION AND INFRASTRUCTURE
Last modified : Tue Mar 17 04:05:55 JST 2026