This course introduces basic electrical engineering principles and technology to students outside the electronics and communication curriculum.


  • Scores for HW6-10
  • Solutions to all quizes are posted.
    • Several of you made many mistakes in the second part of Quiz 3 (Conversion btw sinusoids and phasors). Make sure that you look at the solution carefully.
  • Solution to HW7 is posted.
  • Information about the Final Exam
    • Date: 7 Oct 2010
    • Time: 09:00 - 12:00
    • Room: RS409, 413, 416
    • Here is the cover page of the exam.
    • You will need a calculator. Make sure that you can work quickly with calculation involving complex numbers.
    • It includes all the materials that we discussed in class upto lecture notes 4A.
    • One A4 sheet allowed. Must be hand-written. No small pieces of paper notes glued/attached on top of it.
      • Indicate your name and ID on the upper right corner of the sheet
      • Submit your formula sheet with your final exam. (You can get it back from me next semester if you take the lab class with me.)
  • No morning class on Aug 25, 2010. We will still have our afternoon lecture. [Posted on Aug 25 @ 5PM]
  • Midterm Information
    • Scores were posted. [Posted on Aug 16 @ 10PM]
    • Here is the first page of the midterm.
    • Including the cover page, there are 13 pages.
    • There are 10 questions.
    • It includes all the materials that we discussed in class upto (including) op amps.
    • Chapter 3 (Nodal + Mesh analysis) + Chapter 4 (Circuit Theorems) are very important.
  • Scores for HW1-4 are posted. The leftmost column contains the last three digit of your student IDs. [Posted on July 26 @ 1AM, Fixed on July 29 @ 9:30PM]
  • No tutorial session on Friday, July 23.
  • A crude RSS feed is provided. You may find it useful for following class updates.
  • Welcome to ECS203! Feel free to look around this site.

General Information

Handouts and Course Material

Problem Set

Note that, for each HW, only ONE question will be graded. Of course, you do not know which one will be selected; so you should work on all of them.

  1. HW1(Due: July 1 @10:39AM)
  2. HW2(Due: July 8 @10:39AM)
    • Because we haven't talked much about mesh analysis, you may submit Q5-Q9 with the next HW. In which case, submit Q1-Q4 on July 9 and then submit Q5-Q9 on July 16.
    • Of course, if you feel comfortable solving Q5-Q9 at this time, you may submit them on July 9.
    • Solution[Posted on July 8 @ 3:30PM]
  3. HW3 (Due: July 15 @10:39AM)
    • Q5-Q9 from the previous HW are now Q1-Q5 in HW3. If you have already worked on them on HW2, clearly indicate this fact in your HW3.
    • Solution[Posted on July 15 @ 10:30PM]
    • Comments[Posted on July 30 @ 1:30PM]
  4. HW4 (Due: July 22 @10:39AM)
    • Solution [Posted on July 23 @ 4PM]
    • Scores for HW1-4 are posted. [Fixed on July 29 @ 9:30PM.] The leftmost column contains the last three digit of your student IDs.
  5. HW5 (Not Due)
  6. HW6 (Due: August 26 @2:39PM)
  7. HW7 (Due: September 2 @10:39AM) [Fixed on August 26 @ 10:30PM]
    • If you have already downloaded the earlier version of HW7, ignore Q4 and Q5. We haven't covered Q4 and Q5 in class.
    • Solution
  8. HW8 (Due: September 9 @ 10:39 AM) [Fixed on September 3 @ 9:00AM]
    • If you have already downloaded the earlier version of HW8, ignore Q7 to Q10. I already talked about them in class but we will work on some more examples next week.
    • Solution (draft)
  9. HW9 (Due: September 16 @ 10:39 AM)
  10. HW10 (Due: September 23 @ 10:39 AM)
  11. HW11 + self-evaluation form (Due: September 30 @ 10:39 AM)


Reading Assignment

  1. Chapter 1: 1.1-1.6
  2. Chapter 2: 2.1-2.6
  3. Chapter 3: 3.1-3.5, 3.7
  4. Chapter 4
  5. Chapter 5: 5.1-5.8
  6. Chapter 6 (Capacitors and Inductors): 6.1-6.5
  7. Chapter 9 (Sinusoids and Phasors): 9.1-9.7
  8. Chapter 10 (Sinusoidal Steady-State Analysis): 10.1-10.7
  9. Chapter 11 (AC Power Analysis): 11.1-11.6
  10. Chapter 7 (RC and RL Circuits): 7.1-7.3, 7.5, 7.6
  11. Chapter 8 (Second-Order Circuits)

Course Outline

  1. Intro, units, quantities & measurements
    • Math review: solving equations (in tutorail session)
  2. Intro electric circuits: Ohm's Law, node/branches/loops, Kirchoff's Laws, resistive circuits
  3. Series/parallel resistors, voltage divider, current divider, nodal analysis
  4. Mesh analysis, linearity, superposition
  5. Source transformation, Thevenin's/Norton's equivalent circuits, maximum power transfer
  6. Basic electronics: Op amps
  7. Capacitors and inductors; diodes
  8. MIDTERM: 5 Aug 2010 TIME 09:00 - 12:00
  9. Electric power systems. Sinusoids, phasors
    • Complex number review (in tutorail session)
  10. Phasor relationships for circuit elements, impedance and admittance, Kirchoff's laws in frequency domain, impedance combinations.
  11. Sinusoid steady-state analysis: nodal/mesh analysis, superposition theorem, source transformation, Thevenin/Norton equiv. circuits
  12. AC power analysis: instantaneous and average power, maximum average power transfer, effective or RMS value
    • Apparent power and power factor. Power factor correction. (if time permitted)
  13. First-order circuits
  14. Second-order circuits
  15. Three-phase circuits, transformers, household/industry wiring (if time permitted)
  16. Preview of communication systems (if time permitted)
  17. FINAL: 7 Oct 2010 TIME 09:00 - 12:00

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