EE223: Circuits II

EE223, Electrical Circuit Analysis II, is the second course in a series designed to provide engineering majors the tools to analyze and design passive analog circuits. This course introduces capacitors and inductors, and develops the natural and forced responses of circuits containing these elements. It introduces complex phasor notation in the context of sinusoidal steady-state analysis, and then further develops these concepts in the analysis of single and three-phase AC power. The laboratory portion of the course introduces the practical skills of designing, building, and debugging physical circuits in the context of relevant contemporary examples. It includes a major design 4-lab sequence in which cadets design and build a project of their choice. Prerequisite: C or better in EE 122. Corequisite: MA311. (3 lecture hours, 2 lab hours, 4 credit hours).

Lecture Schedule

In the following table, the readings and homework are assigned on the day listed and due on the following lesson. Some problem sets are downloaded below and completed by the student on engineering graph paper. Others are links to online electronically-graded problems that are due 10 minutes prior to the start of class - make sure you have saved your work by then. You must register with the Connect system to complete the online E-Assignment problems at the link in the paragraph below, which also grants you two years of access to the online text. The last page of the bookstore-bought text gives code to register with Connect; if you purchased the text elsewhere you must buy Connect access directly through the link to complete the E-Assignments.

All E-Assignments are available at this link.

# Date Title Read Homework & Handouts
1 28 Aug Integration review none Syllabus
PS1, CP1, CP1Solutions
2 30 Capacitors #1 6.1-6.2 PS2, CP2, CP2Solutions
3 2 Sep Capacitors #2 6.3, 6.6 (not 6.6.3) PS3, CP3, CP3Solutions
4 4 Inductors 6.4, 6.5, 6.7 E-Assignment (link to all E-Assigments at the top of this assignment table). Try the ungraded example HW first.
Hint: If entering a function, not just a number, click the placeholder first to enter the function-entering mode.  CP4, CP4Solutions
5 6 1st order circuits #1 7.1, 7.2 PS5, CP5, CP5Solutions
6 9 1st order circuits #2 7.3 E-Assignment.  CP6, CP6Solutions
7 11 Singularity functions 7.4 PS7, CP7, CP7Solutions
8 13 Step response of RC circuits 7.5  Work on next lecture's assignment
9 16 Step response of RL circuits, 1st order opamps 7.6, 7.7 PS8-9
10 18 Spice and applications 7.8, 7.9, 7.10 PS10, CP10, CP10Solutions
11 20 Review for Test 1 Review sheet Practice test
Practice test solutions
12 23 Test 1
13 25 Initial conditions 8.1, 8.2 Work on E-assignment (due in 2 lectures), CP13-14, CP13-14Solutions
14 27 Initial, final values 8.1,8.2 Above E-assignment due by start of next lecture
15 30 Source-free series RLC 8.3 Work on PS15-16 (due in 2 lectures), 2nd order methods, CP15-16, CP15-16Solutions
16 2 Oct Source-free parallel RLC 8.4 Above assignment due by start of next lecture 
17 4 Step response series RLC 8.5 Work on E-assignment (due in 2 lectures), CP17-18, CP17-18Solutions
18 7 Step resonse parallel RLC 8.6 Above E-assignment due by start of next lecture
19 9 General 2nd order circuits 8.7, 8.11 PS19, CP19, CP19Solutions
11 Class DNF    
20 14 Review Test 2 Review sheet Practice test, Solutions to practice test
21 15 Test 2    
22 16 Sinusoids 9.1, 9.2 PS22, CP22, CP22Solutions
23 18 Phasors 9.3 PS23, CP23, CP23Solutions, using your calculator
24 21 RLC impedance 9.4-7, 9.9 E-Assignment, CP24, CP24Solutions
25 23 Phasor nodal analysis 10.1, 10.2 PS25, CP25, CP25Solutions
26 25 Phasor mesh analysis 10.3 PS26, CP26, CP26Solutions
27 29 More phasor analysis techniques 10.4, 10.5 E-Assignment, CP27, CP27Solutions
28 30 Class moved to Lab 9 on 28 Oct (lab moved to Monday for VMI speaker)
Class DNF on 30 Oct as comp time

Phasors: Thevenin & Norton
10.6 PS28, CP28, CP28Solutions
29 1 Nov Opamps and Spice CP29, CP29Solutions
30 4 Review for Test 3 Review sheet Practice test
Practice test solutions
31 5 Test 3 - During lab    
32 8 Instant & average power 11.1, 11.2 PS32
  11 No class - Founder's Day    
33 12 Monday classes meet
Maximum power transfer and RMS
11.3, 11.4 PS33, CP33, CP33Solutions
34 13 Apparant power and power factor 11.5 PS34, CP34, CP34Solutions
35 15 Complex power 11.6 E-Assignment, CP35, CP35Solutions
36 Lab 19 Complex power correction 11.8 E-Assignment, CP36, CP36Solutions
37 20 Polyphase power 12.1,12.2 none
38 22 Ideal transformers 13.5,13.9 review for final exam, CP38Problems And Solutions
39 Dec 4 Field trip: polyphase power at VMI none review for final exam
40 6 Final exam review, Test Block 1, admin Review sheet Practice final exam
Practice final exam solutions
41 9 Final exam review, Test Block 2
42 11 Final exam review, last test block (power)
  13 0830-1130: Final examination  

Lab Schedule

In the following table the lab occurs on the given date, the prelab is due on that date, and the lab report is due on the following lesson. More information on lab policies are in the syllabus. Lab partners list

# Date Title Handouts
0 27 Aug Class, lab policies Lab report format,
LTSpice walkthrough
1 3 Sep Basic instrumentation, build a DAC DAC Lab
2 10 Use of the oscilloscope Oscilloscope Lab
3 17 First order circuits 1st Order Circuits Lab,
LTSpice walkthrough
4 24 Test 1 postmortem
5 1 Oct Extra lab - Circuits I Review  
6 8 Second order circuits step response 2nd Order Circuits Lab
7 15 Test 2 Comparator Lab
8 22 Comparators  
9 28 1425-1540: Teaching lab I Teaching Lab
10 6 Nov Teaching lab II  
11 19 Lesson plan due.  Also, Lesson 36  
12 3 Dec Teach lab to middle school students  
13 10 Clean lab, return components


Matlab available for free at the barracks help desk and does everything the $2,500 commercial licenses do!

NCEES Reference Handbook. The printed book is an authorized reference in all my exams. You can download a free pdf version (not authorized for my exams since you can't read it) directly from the NCEES website, and it is a good reference for homework (especially for integral equations).

IC Datasheets. This is a listing of all common linear integrated circuits that we use in this course, as well as in entire curriculum at VMI.

LTSpice Free circuit simulator

Filter Designer Lite Free Active (opamp) filter design software

Variable voltage divider designer Variable resistor voltage divider design

Three Phase Power interactive demonstration