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 here, 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 29 Aug Integration review none Syllabus
2 30 Capacitors #1 6.1-6.2 PS2
3 1 Sep Capacitors #2 6.3, 6.6 (not 6.6.3) PS3
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: Problem 1's answer is a function, not a number.  Click the placeholder to enter the function-entering mode.
5 6 1st order circuits #1 7.1, 7.2 PS5
6 8 1st order circuits #2 7.3 E-Assignment. 
7 11 Singularity functions 7.4 PS7
8 13 Step response of RC circuits 7.5  Work on next lecture's assignment
9 15 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
11 20 Review for Test 1 Review sheet Practice test
Practice test solutions
12 22 Test 1
13 25 Initial conditions 8.1, 8.2 work on next lecture's E-assignment
14 27 Initial, final values 8.1,8.2 E-Assignment
15 29 Source-free series RLC 8.3 Work on next lecture's assignment, 2nd order methods
16 Oct 2 Source-free parallel RLC 8.4 PS15-16
17 4 Step response series RLC 8.5  work on next lecture's E-assignment
18 6 Step resonse parallel RLC 8.6 E-Assignment
19 9 General 2nd order circuits 8.7, 8.11 PS19
20 11 Review Test 2 Review sheet Practice test
Practice test solutions
21 13 Test 2    
22 16 Sinusoids 9.1, 9.2 PS22
23 18 Phasors 9.3 PS23
24 20 RLC impedance 9.4-7, 9.9 E-Assignment
25 23 Phasor nodal analysis 10.1, 10.2 PS25
26 25 Phasor mesh analysis 10.3 PS26
27 27 More phasor analysis techniques 10.4, 10.5 E-Assignment
28 30 Phasors: Thevenin & Norton 10.6 PS28
29 1 Nov Opamps and Spice
30 3 Review for Test 3 Review sheet Practice test
Practice test solutions
31 6 Test 3    
32 8 Instant & average power 11.1, 11.2 PS32
33 13 Maximum power transfer and RMS 11.3, 11.4 PS33
34 15 Apparant power and power factor 11.5 PS34
35 17 Complex power 11.6 E-Assignment
36 29 Complex power correction 11.8 E-Assignment
37 Dec 1 Polyphase power 12.1,12.2 none
38 4 Ideal transformers 13.5,13.9 review for final exam
39 6 Field trip: polyphase power at VMI none review for final exam
40 8 Final exam review, Test Block 1, admin Review sheet
41 11 Final exam review, Test Block 2
42 13 Final exam review, last test block (power)
  16 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.

# Date Title Handouts
1 5 Sep Basic instrumentation, build a DAC Lab report format,
LTSpice walkthrough
2 12 Use of the oscilloscope Oscilloscope Lab
3 19 First order circuits 1st Order Circuits Lab,
LTSpice walkthrough
4 26 Test 1 postmortem
5 3 Oct Extra lab  
6 10 Second order circuits step response 2nd Order Circuits Lab
7 17 Comparators Comparator Lab
8 24 Non-ideal opamps Non-ideal opamps
9 31 Teaching lab planning Teaching Lab
10 7 Nov Teaching lab planning  
11 14 Lesson plan due
12 28 Teaching lab planning  
13 5 Dec Teach lab to middle school students
14 12 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

555 Designer Free 555 oscillator design software

Filter Designer Lite Free Active (opamp) filter design software

Variable voltage divider designer Variable resistor voltage divider design

Three Phase Power interactive demonstration