Principle of Circuit

Course Code: B23009H

Course Name: Principle of Circuit

Credits: 2.5

Level: Undergraduate  

Pre-requisite:Calculus, Linear Algebra, College General Physics

Lecture Time: 25 sessions, 2 hours/session

Course Description

This course is a professional basic course for physics and related majors, which will enable students to master the basic principles and analytical methods of the circuit, learn to analyze circuits using the electronic design automation tools, and prepare for the follow-up electronics courses. This course will help students understand limits of circuits, and expand professional vision through the introduction of related science and technology in the forefront of progress. The lecture content includes DC circuit analysis, AC circuit analysis, circuit applications, and a number of professional overview closely related to the forefront of technology, etc.

Topics and Schedule (serial number, teaching content, class advice, knowledge point)

1.  Basic circuit concepts 4 Circuit development, circuit representation, charge and current, voltage and power, circuit element; Technical overview: micro / nano technology.

2.  Resistance, circuit and basic law 6 Ohm law, Kirchhoff law, the equivalent circuit, Wheatstone bridge, star-triangle transformation, the nonlinear element and nonlinear I-V relationship, Multisim/SPICE introduction; Technical overview: resistance sensor.

3. Analytic method and circuit theorem 6 Node voltage method, mesh current method, direct method, power superposition, Thevenin and Norton equivalent circuit, bipolar junction triode, maximum power transmission; Technical overview: manufacturing process of LED and integrated circuit.
4.  Operational amplifier 6 characteristics of the operational amplifier, negative feedback, ideal amplifier, inverting amplifier, summing amplifier, differential amplifier, voltage follower amplifier, signal processing circuit of operational amplifier, measuring amplifier, digital-analog converter, the voltage controlled current source MOSFET; Technical overview: display technology and computer storage circuit.

5.  First order RC and RL circuit 4 Periodic waveform, capacitor, inductor, response of RC circuit, response RL circuit, RC Op Amp circuit, parasitic capacitance and speed of computer processor; Technical overview: Super capacitor.

6.  Circuit analysis through Laplace transform 6 the initial and final value, RLC series and parallel circuits, unit impulse function, Laplace transform method, property of Laplace transform, s-domain circuit unit model, s-domain analysis of circuit; Technical overview: micro mechanical sensor and actuator, touch screen and active digital instrument.

7.  Analysis of alternating current 4 Sinusoidal signal, phase domain analysis, impedance transformation, equivalent circuit, phase diagram, phase shift circuit, phase domain analysis method, power circuit; Technical overview: crystal oscillator.

8.  Alternating current power 4 periodic waveform, average power, complex power, power factor, maximum power transmission; Technical Overview: Noise Canceling Headphones, night vision imaging.

9. Frequency response of circuit and filter 6 Transfer function, convolution integral, Baudot diagram, passive filter, active filter, cascaded active filter, modulation and super heterodyne receiver; Technical Overview: smart dust, sensor networks and pervasive computing, bandwidth, data transmission rate and communication.

Term Project 

Select the topics related to the "Technical Overview" in the course content, do research work with the acquired professional knowledge and write research reports and make statements.


Final test: 60%  (Closed-book written examination)
Homework: 40

Project statements: 10

Course Characteristics

(1) Pay attention to the basic theory and analysis of the circuit, as well as the classroom interpretation, homework as complementation;

(2) Introduce electronic design automation (EDA) tools Multisim, and present mainstream circuit analysis and design methods;
(3) Integrate CMOS technology to reflect the rapid development of micro and nano electronic technology;

(4) With the part ‘Technical Overview’, establish the relationship between classical circuit theory and frontier science and technology, and stimulate the study enthusiasm of students;

(5) By cooperatively completing the semester project of this course, the students will gain research interests and cooperation consciousness.


Fawwaz T. Ulaby and Michael M. Maharbiz, Circuits, 2nd edition, NTS Press, 2012.

[1] James W. Nilsson, Susan A. Riedel, Electric Circuits, 9th edition, Prentice Hall, 2011.
[2] Charles K. Alexander and Matthew N. O. Sadiku, Fundamentals of Electric Circuits, 5th edition, McGraw Hill, 2013.
[3] Allan R. Hambley, Electrical Engineering: Principles and Applications, 5th edition, Pearson Education, Inc., 2011.