20220314 (Electrotechnics and Electronics A)

Course Name: Electrotechnics and Electronics A

Course Number: 20220314

Program: Undergraduate program

Type: Required

Credits: 4

Term Offered: Spring and Fall

Prerequisite(s): Physics, Higher Mathematics

Instructor(s): Qingyu Tang, Yandan Wang, Tingwen Liu

Textbook(s):

Tang Qingyu, Electrical engineering and Electronics, Tsinghua University Press, 2008 (in Chinese)

Reference(s):

Qingyu Tang, Experimental instructions for Electrical Engineering and Electronics, Tsinghua University Press, 2004

Hongming Wang, Yusheng Duan, Yandan Wang, Electrical Engineering and Electronics, High Educational Press, 2009

Yusheng Duan, Lijing He, Yandan Wang, Electrical Engineering and EDA fundamentals, Tsinghua University Press,2004~2006

Giorgio Rizzoni, Principles and Applications of Electrical Engineering, McGraw Hill, 2007

Allan R. Hambley, Electrical Engineering (Principles and Applications), Pearson Prentice Hall, 2005

Thomas L. Floyd, Digital Fundamentals, Science Press, 2003

Course Description:

This course is designed to serve as a basic technical course for non-EE majors. It includes three basic areas related to electrical engineering: circuits, electro-mechanics, and electronics. It includes the following topics: fundamentals of electric circuits; AC network analysis; transient analysis; three-phase circuits; nonsinusoidal periodic current circuits; circuit simulation based on SPICE; electric machines; relay and contactor control system, transistor and operational amplifiers;   negative feedback. Design projects and lab experimental exercises are also significant components of the course.

Course Objectives and Outcomes:

1.To introduce the principles of analog and digital electronics to the non-electrical-major engineering students. [1, 4]

2.To present the students with analytical tools, such as MULTISIM, to solve the practical problems. [3, 5, 11]

3.To improve the practice ability of the student by the training of laboratory and design projects. [11]

Course Topics:

1.Basics of electric circuits: introduction to electric circuits; the concepts of current, voltage and power; voltage-current characteristics of resistor, capacitor and inductor ; Kirchhoff current and voltage laws.

2.Circuit Analysis Method: node-voltage method, branch-current method, Superposition Theorem, Thevenin’s and Norton’s Theorem.

3.Sinusoidal circuit analysis: the concept of phasor and impedances; the phasor method for complex sinusoidal circuits; power and power correction; series resonance, parallel resonance and frequency response.

4.Non-sinusoidal periodic current circuits.

5.Three-phase circuits: characteristics of three-phase voltage; connection of three-phase voltage source and load; phase voltage and line voltage; phase current and line current; methods for three-phase current; three-phase power.

6.Transient analysis: switching theorems; three-factor method for the first order dynamic circuits; the response of a RC circuit to a sequential pulse input; the concepts of zero input, zero-input response, zero state and zero-state response.

7.Three-phase induction motor: basic structure and operating principle; torque- speed characteristics; rating data; applications which include starting, speed control, braking and forward-reversal operating.

8.Introduction to single-phase induction motor.

9.DC motors: basic structure and operating principle; torque-speed characteristics; speed control.

10.Stepping motor: basic structure and operating principle;

11.Relay and contactor control system: mechanism of control devices, basic control circuits.

12.Diodes: PN junction and diodes; characteristics of the diode; analysis of circuits with diodes; the Zener diode and its application circuits.

13.Bipolar junction transistor (BJT) and BJT amplifiers: current gain and current-voltage characteristics of BJT; the circuit model of BJT; Common- emitter transistor amplifiers, emitter-follower.

14.Field Effect Transistor (FET) and FET amplifiers: characteristics of junction FETs and MOSFETs; the circuit model of FETs; Common- source transistor amplifiers, source-follower.

15.RC-coupling multistage amplifiers: characteristics, voltage gain, input/output resistance.

16.Differential amplifiers : basic construction; differential-mode signal , differential gain , common-mode signal, and common-mode gain; input and output resistance;  the connections of input and output.

17.The Operational Amplifiers: Basic Configuration and Specifications.

18.Negative Feedback: the feedback concept and it’s expression; The Feedback configuration and it’s discrimination; the gain of the Amplifier with strong negative feedback; the effect of negative feedback on the amplifiers

19.Circuit simulation with MULTISIM.

Experiment Project(s):

l  Multimeter experiment.

Design and build a multiple-meter. Study how to calibrate the multimeter. Study the effects of a meter on the circuit.

l  Series resonance circuits.

Build a RLC series circuit and measure its amplitude frequency response. Study the characteristics of the series resonance circuit. Study the effects of the device parameters on the circuit.

l  Three-phase circuit experiment.

Measure the three-phase voltages. Measure the voltages and currents of a wye connection load. Measure the voltages and currents of a delta connection load. Build a sequence meter and measure the sequence of the power supply.

l  Transient in RC circuits.

Build a first order RC circuit, study the response of the RC circuit to zero-input and step voltage input. Study the response of the RC circuit to a square wave input. Study the transient of a pulse divider. Study the transient of two parallel capacitors.

l  Relay and three-phase induction motor control circuits.

Start circuit of three phase induction motors. Forward and backward rotation control of three phase induction motors. Wye-delta start circuit of three phase induction motors.

l  Single-stage amplifier circuits.

Study the operating point of a common-emitter transistor amplifier. Study the dynamic characteristics of the circuit. Build an emitter-follower circuit and study its characteristic.

l  Circuit simulation using Multisim.

R-L-C series circuit simulation; RC circuit simulation; Transistor amplifier circuit simulation.

Course Assessment:

  Homework measures, 10 points

  Quiz and simulation homework measures, 10 points.

  Experiments: 10 points.

  Final exam score, 70 points.