Course title
G00080002
Electric Circuits 3

 KOIKE Yoshikazu

ISHIKAWA Hiroyasu

PREMACHANDRA CHINTHAKA

YAMAGUCHI Masaki
and more...

MAEDA Tadashi
Course description
In this course, students will learn the transient phenomena and the distributed constant circuit.

(1) Transient phenomena:
　In the electrical circuits, the waveforms of power supply are drastically changed from steady state. The voltage and current of circuit element is also changed by switching. These phenomena are called "transient response". The transient response is closely related to the initial state just before changes. In this subject, the transient response for the circuits consist of R, L, and C will be analyzed by using differential equations.

(2) Distributed constant circuit:
　Electric circuits are basically analyzed as lumped constant circuits, although the circuit elements do not have dimensions, but exist as a point in the space. However, the circuit elements such as R, L, and C have to be handled as the distributed constant circuits, in which the circuit elements are spatially distributed, when the frequency of signal is very high and wavelength is shorter than the dimensions of electric circuit. In this subject, voltage and current for the transmission lines such as power lines and communication wires will be analyzed.
Purpose of class
The purpose of this class is to acquire analysis methods of transient response for electric circuits consist of R, L, and C, and to acquire analysis methods of voltage and current for the transmission lines such as power lines and communication wires.
Goals and objectives
  1. To understand the concept of transient phenomena for RC or RL series circuit, when direct or active current is supplied.
  2. ･To understand the concept of transient phenomena for LC or RLC series circuit, when direct current is supplied, and for RC or RL series circuit, when pulse wave is supplied.
  3. ･To understand the basic concept of distributed constant circuits and wave.
    ･To understand the concept of lossless distributed constant circuits, and of voltage and current waves at the boundary point.
  4. ･To understand the concept of steady analysis for the distributed constant circuits.
    ･To understand the concept of characteristic impedance and boundary condition for the distributed constant circuits.
  5. ･To understand the analyses of open or short circuit for the distributed constant circuits with voltage and current reflections.
    ･To understand the concept of resonance and standing wave for the transmission lines.
Relationship between 'Goals and Objectives' and 'Course Outcomes'

 small report Intermediate exam Term-end exam Total.
1. 10% 15% 25%
2. 10% 15% 25%
3. 10% 15% 25%
4. 10% 15% 25%
Total. 40% 30% 30% -
Evaluation method and criteria
The achievement of this course is evaluated by 12 small reports (40%), intermediate exam (30%), and term-end exam (30%).
Students will pass this course by obtaining total score of 60 or higher.
Language
Japanese
Class schedule

 Class schedule HW assignments (Including preparation and review of the class.) Amount of Time Required
1. Transient phenomena of RC circuits Preparation: Textbook, Chapter 6, pp.203-212 180minutes
2. Transient phenomena of RL circuits Preparation: Textbook, Chapter 6, pp.212-215 180minutes
3. Transient phenomena of RC or RL parallel circuit Review: Textbook, Chapter 6, pp.203-215 180minutes
4. ･Transient phenomena of LC and RLC circuits Preparation: Textbook, Chapter 6, pp.218-223 180minutes
5. ･Transient phenomena of pulse circuit Preparation: Textbook, Chapter 6, pp.225-228 180minutes
6. Intermediate exam and its explanation
･Exam coverage: Class schedule 1-5
Weight of Class schedule 1-3: 50 %
Weight of Class schedule 4-5: 50 %
･Explanation of exam questions
･Dan not refer textbook, note ,and etc.
･Calculator can be used. 		Review: Textbook, Chapter 6, especially to solve and understand deeply the examples, drill, and practice problem. 245minutes
7. Distributed constant circuits and wave Preparation: Textbook, Chapter 7, pp.230-235 180minutes
8. ･Lossless distributed constant circuits Preparation: Textbook, Chapter 7, pp.235-238 180minutes
9. ･Steady analysis of distributed constant circuits Preparation: Textbook, Chapter 7, pp.240-242 180minutes
10. Characteristic impedance of distributed constant circuits Preparation: Textbook, Chapter 7, pp.242-244 180minutes
11. ･Distributed constant circuits with voltage and current reflections. Preparation: Textbook, Chapter 7, pp.246-248 180minutes
12. Resonance of distributed constant circuits, transmission, and standing wave Preparation: Textbook, Chapter 7, pp.249-251 180minutes
13. exercises Preparation: Textbook, Chapter 7 180minutes
14. Term-end exam and its explanation
･Exam coverage: Class schedule 7-13
Weight of Class schedule 7-10: 50 %
Weight of Class schedule 11-13: 50 %
･Explanation of exam questions
･Can not refer textbook, note, and etc.
･Calcurltor can be used. 		Review: Textbook, Chapter 7, especially to solve and understand deeply the examples, drill, and practice problem. 245minutes
Total. - - 2650minutes
Feedback on exams, assignments, etc.
ways of feedback specific contents about "Other"
Feedback in the class
Textbooks and reference materials
Textbook: Electric Circuit Revised Edition (in Japanese), A. Kinbara, et.al., Jikkyo Shuppan Co.,Ltd.
Prerequisites
･Students are required to understand the basis of differential equations.
･Review the contents of Electric Circuit 1･2, and prepare for this course.
Office hours and How to contact professors for questions
  • ･Omiya campus: Monday 12:30-13:10、Room 4301
    ･Toyosu campus:Wednesday 12:30-13:10, Room 10-I-32
Regionally-oriented
Non-regionally-oriented course
Development of social and professional independence
  • Course that cultivates an ability for utilizing knowledge
Active-learning course
More than one class is interactive
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 : Sat Mar 08 04:23:34 JST 2025