ENG 17 - Fall 2010

Circuits I
ENG 17 - Fall 2010
Lecture: MWF 4:10-5:00 in 1003 Giedt Hall
Discussion Section 1: W 1:10-2:00, 55 Roessler, CRN 61417
Discussion Section 2: W 2:10-3:00, 55 Roessler, CRN 83089
Discussion Section 3: F 1:10-2:00, 55 Roessler, CRN 83090

Announcements:

Here is the corrected grade sheet for the FINAL grades for the course. The first one I posted had the exam scores wrong (I cut and pasted from the wrong columns). I apologize for the error. The grades on that sheet were, however, correct. I fixed the error at about 7:15 AM on Saturday, 12/18. If you spot another problem, contact Prof. Spencer ASAP.

Here are the solutions for the final exam.

Here is an updated formula sheet for the final examination. I added some material on second-order systems and damping about 4PM on 12/2.

The TAs will hold pre-final-exam office hours on Thursday, Dec. 9th from 1:30-6:00 PM in 2161 Kemper Hall. Prof. Spencer will also hold office hours from 11:00-1:30 on that day in his office.

I have fixed the errors in the two-port network primer.

We will not have a lecture on Wednesday, 11/24. We are slightly ahead of schedule with the material, so we can afford to miss one lecture to allow you to head home a bit earlier for Thanksgiving vacation.

Here are the solutions to the second midterm.

Here are the solutions to the practice midterm for midterm #2.

Here is a practice midterm for midterm #2. Here is the formula sheet for this exam (I added to this formula sheet at 10:33 AM on 11/3).

Here is the solution to Quiz question Q7.1-6 in the book (pg 326). If you go over it carefully it will help you see why the lowpass transfer function is called lowpass and it will give you a detailed example of solving the differential equation with a cosine forcing function both the standard way and with operators.

Here are the solutions for the first midterm.

Here are the solutions to the practice midterm.

Instructor

Prof. Richard Spencer, 2041 Kemper Hall, 752-6885

Please do not use email to contact me unless it is necessary (i.e., don’t use it in place of questions in class, the discussion session and office hours). My email address is: spencer@ece.ucdavis.edu

Office hours: Fridays, 10:00 AM - 12:00 PM in 2041 Kemper Hall
In addition, Prof. Spencer will hold pre-exam office hours at the following times:
Friday, October 15, 12:30 - 2:30 PM
Monday, November 8, 12:00 - 3:00 PM
Thursday, December 9, 11:00 - 1:30 PM

Prof. Spencer is also available after class every day and by appointment.

TAs

The TAs will hold pre-final-exam office hours on Thursday, Dec. 9th from 1:30-6:00 PM in 2161 Kemper Hall.

Timothy Monk (email: tamonk@ucdavis.edu)
Office hours: Fridays, 3:00-4:00 PM, in 2161 Kemper Hall

Stanley Hsu (email: swhsu@ucdavis.edu)
Office hours: Thursdays, 3:00-4:00 PM, in 2161 Kemper Hall

Syed (Reza) Bahadur (email: srbahadur@ucdavis.edu
Office hours: Wednesdays, 3:00-4:00 PM, in 2161 Kemper Hall

Required Text

Artice M. Davis, Linear Circuit Analysis, Cengage (originally with PWS Publishing Company), 1998
I have put together an errata and comments for the book: davis-errata

Syllabus

Download a complete course syllabus here.

Interesting or Useful Links

To access some of the material below you will need to use the username and password specified on the course syllabus.

Here is the summary from PG&E about how power factor affects the rates paid by large users for electric power.

Here is a short summary of what we covered in class and discussion section on opamps.

Here are the powerpoint slides I used for the first lecture

Here are the powerpoint slides I used for part of one lecture on capacitors and inductors.

Here are the powerpoint slides I used for the lecture starting frequency-domain analysis.

Here are the powerpoint slides I used for the lecture on transformers.

Here is a handout (an appendix from a book) that goes beyond the material in this course, but some of you may find interesting and useful. It explains how linear time-invariant circuit analysis is built on using complex impedance along with the Fourier Series and extensions of the Fourier Series (the Fourier and Laplace transforms). It also explains the relationship between the complex frequency domain and standard Bode plots of the magnitude and phase of transfer functions versus frequency. Finally, it has asides on the complex exponential and Bode plots.

Here is a humorous cartoon about being an engineer! The Knack

Class Schedule

You will need the username and password given in the course syllabus to access the handouts.

Date	Day	Topic	Reading[1]	Homework
September 24	F	Introduction, define: elements, branches, leads, terminals, circuit, topology, node, subcircuit, series and parallel circuits, voltage, current, notation, and ground	§1.1 & §1.2 Here are the powerpoint slides I will use for the first lecture	HW1 - Due Friday 10/1 by 5:00 - Handout
27	M	Charge & flux linkage; Passive sign convention; Unit step function; Power and energy; Independent sources; The resistor and equivalent resistance	§1.3 through §1.5 & §2.1, HW1 covers up through here (+ Kirchoff's laws)
29	W	Kirchoff’s laws; Series circuits & the voltage divider; Equivalent subcircuits & circuits; Parallel circuits & the current divider	§2.2, §2.3, §2.4, & §2.6
October 1	F	Review basic axioms of circuit theory; Source transformation; Linearity & superposition; Thévenin and Norton equivalent circuits	§3.1 through §3.3	HW2 - Due Friday, 10/8 by 5:00 - Handout
4	M	Practical sources and matching; Source transportation (split-source transformations) & substitution; Example; Start Nodal Analysis	§3.4, §3.5, §3.6 & §4.1, HW2 covers up through here
6	W	Finish nodal analysis; Start mesh analysis	§4.2 & review Appendix A up through (A-58)
8	F	Finish mesh analysis; Analysis by inspection; examples	§4.3, §4.4 & §4.5	HW3 - Due Wednesday, 10/13 by 1:00 - Handout
11	M	Finish examples and review for midterm	HW3 covers up through here
13	W	Dependent (controlled) sources; Active subcircuits; Introduction to op amps	§5.1, §5.2 (skip the material starting with Example 5.4 on page 178), §5.3, §5.4 (only through page 191)	HW4 - Due Friday, 10/22 by 5:00 - Handout
15	F	Midterm 1 covers material through Chapter 4 (HW3)
18	M	Capacitors; Operator notation for derivatives and integrals; Impedance and admittance; Impedances in series and parallel; One-sided waveforms and causality; The pulse function	§6.1 & §6.2, HW4 covers up through here
20	W	Finish capacitors; Inductors; Inductors in series and parallel; DC steady-state; Energy storage in inductors and capacitors	§6.3, §6.4
22	F	Initial conditions; Switched circuits; The impulse function	§6.5, §6.6 (skip the Generalized Differentiation of Discontinuous Waveforms section, which begins on page 283 and ends on page 286. Start reading again with Example 6.20). Here are the powerpoint slides I will use for the lecture.	HW5 - Due Friday, 10/29 by 5:00 - Handout
25	M	Time response of first-order circuits with first-order lowpass response	§7.1, HW5 covers up through here
27	W	First-order highpass response; General first-order response; Example circuitgs	§7.2, §7.3 (pay particular attention to Example 7.9!)
29	F	Equivalent circuit analysis for circuits with a single energy storage element; Compare methods; Complex numbers	§7.7 (§7.6 is interesting and useful, but you are not required to read it), §8.1, §8.2	HW6 - Due Friday, 11/5 by 5:00 - Handout
November 1	M	Euler’s formulas; Sinusoids, Complex Exponentials and Phasors; Solution of higher-order circuits and differential equations	§8.4 (pay attention to footnote 8 on page 412) & §8.6, §9.1 (you may skip the short section entitled Cascade Simulation of the General Solution Operator on page 427) HW6 covers up through Chapter 8
3	W	Review for midterm
5	F	Finish solution of higher-order circuits and differential equations; Properties of 2^nd-order circuits and systems – damping	§9.2, HW7 covers up through here	HW7 - Due Friday, 11/12 by 5:00 - Handout
8	M	Midterm 2 covers material through Chapter 8 (HW6)
10	W	The phasor equivalent circuit; Complex impedance & admittance; KVL & KCL with phasors	§11.1, Here are the powerpoint slides I used for the lecture.
12	F	AC circuit analysis with phasors	§11.2 (skip the material on Impedance Scaling and Frequency Scaling beginning right after Example 11.12 and ending with Example 11.15)	HW8 - Due Friday, 11/19 by 5:00 - Handout
15	M	Resonance and more AC examples.	HW8 covers up through here
17	W	Power in AC circuits (average, rms, apparent, complex); Power factor	§11.3 & §11.4 (skip the material beginning with Conservation of Complex Power on page 585 and start reading again with Example 11.24 on page 587)
19	F	More AC circuit analysis examples with power; Power factor correction; Conjugate matching	HW9 covers up through here	HW9 - Due Tuesday, 11/23 by 5:00 - Handout
22	M	Two-port networks; modeling nonlinear circuits	The reading for this material is given in this revised handout on two-port networks and this handout on nonlinear circuits. After you have read the handout on nonlinear circuits, read §5.7 in your textbook, up through Example 5.19.
24	W	Lecture cancelled - enjoy your Thanksgiving Holiday!		HW10 - Due Friday, 12/3 by 5:00 - Handout
26	F	Thanksgiving Holiday
29	M	Finish nonlinear circuits; Mutual inductance and transformers	§16.1 (Ignore Equation (16.1-14a) and stop reading after Example 16.1), HW10 covers up through here. Here are the powerpoint slides I used for the lecture on transformers.
December 1	W	Finish material
3	F	Review for final examination
10	F	1:00 - 3:00 Final Examination (Comprehensive)

[1] All reading assignments refer to the required text and should be completed before the lecture they are listed next to (except for the first lecture of course).

Homework Solutions:

Even when a link appears for a particular solution, the solution will not be available until after the time it is due. The username and password you need to read these files are on the course syllabus.

HW5 solutions
Note: I have now added the solution to Problem 6.4-11 as page 4.

HW10 solutions I fixed a small numerical error on Problem 5(c)

To access any file with the icon, you will need to use Acrobat Reader. If you do not have a copy of the Reader, you can download it from Adobe: