Dec 17, 2019
Exam 3 solution.
Dec 15, 2019
Solutions to the AC and diodes quizzes and solutions to the most of the AC and diode homeworks are on the web site. To see the homework solutions, go to the homework page, scroll to the bottom where the homeworks are listed by topic, and click on the "AC" or "Diode" headings to see the individual problems.
Dec 14, 2019
Here is the solution to the old exam 3.
Dec 10, 2019
Here is exam 3 from Fall 2018.
Dec 9, 2019
No Arduino or Audio club this week. We will start again after the Christmas Break.
Dec 6, 2019
I've decided to forego the last homework problem, so homework set 11 consists of 5 problems, AC7 & AC8, and D1-D3. the due date is still Monday.
Dec 2, 2019
Audio club meeting this afternoon at 5:30 p.m. - 6:30 p.m. in 3043 Coover. We will talk about some of the basics of audio amplifiers.
Dec 1, 2019
- The schedule has been updated. Note that there is no quiz tomorrow — it appears that some people may have trouble getting back to Ames due to bad weather conditions, so we will push the quizzes back one class period.
- The solution to quiz 26 has been posted.
- Reminder: Homework set 10 is due tomorrow. You should turn it in at class time. However, if you have a questions about any of the problems, you can visit during office hours to ask them and then turn in your solutions to me once you have finished.
- Labs 11 and 12 have been posted.
Nov 25, 2019
The problems for homework set 10 are now available.
Nov 21, 2019
The solution to Wednesday's quiz (#25) is available — see the quiz page. Check out both solutions — the second solution uses a slightly different approach from the first.
Nov 18, 2019
Arduino club meeting this afternoon at 5:30 p.m. - 6:30 p.m. We are back to the original room — 3043 Coover. We are going to talk about how to build our own Arduinos.
Nov 14, 2019
Solutions to quizzes 14 - 22 are available.
Here is the solution to last year's exam 2 (Note: Corrected typo at 5:30 p.m.)
Nov 12, 2019
I gave a bad copy of the old exam — prob. 4 on that one was bogus (nothing changed when switch flipped). I've updated it with a corrected version.
Nov 11, 2019
Audio Club meeting today: 5:30 p.m. - 6:30 p.m. in 2222 Coover. (Note: This is a different room than the previous couple of meetings.) We will be talking about speakers.
Nov 9, 2019
Here is an example of exam 2, taken from Fall 2018. And here is the formula sheet that will available during the exam.
Nov 4, 2019
Arduino Club meeting today. Check the club website for topics and activities.
Oct 29, 2019
- Reminder: Wednesday's quiz will be on inductors.
- Here are the Inductor notes that were introduced in class on Monday. These are still not complete, but they are better than nothing.
- Problems for HW set 8 are on the web site. Since these were slow in arriving, everyone gets an extra freebie for this set — meaning that the due date is still Friday, but if you need extra time, you can turn this set in on Monday with no penalty. It does not count against your "two-freebie" HW allowance.
Oct 27, 2019
Please note that Monday's quiz will be on capacitors. We will be covering inductors during class.
Oct 24, 2019
- A small change to one of the homework problems: In problem AMP3-part e, change vb = 0.33 V to vb = 1.33 V. With vb = 0.33 V, the "b" source would actually be absorbing power, not delivering it. Although absorbing power is perfectly fine, it seems a bit odd, given the nature of the question. Of course, increasing the value of vb will cause the output to go negative, but the power being delivered to the load resistor is still positive.
- Friday's quiz will be on op amps again — we are not quite ready for a capacitor quiz.
Oct 17, 2019
Reminder: The quiz tomorrow will be on two-port amplifier circuits. (The link in the schedule has been updated to go to the correct practice problems.)
Oct 15, 2019
Reminder: As discussed in class, the Wednesday quiz will be on dependent sources — not two-port networks. A couple more circuits have been added to the dependent-source practice problems. These might possibly be useful for the quiz.
Oct 13, 2019
Reminder: Monday's quiz will be over dependent sources. A dependent-source practice-problem script has been added to the list. There are only a couple of different circuits in there now, and these are probably enough to practice for the quiz. More circuits will be added later.
Oct 7, 2019
The schedule and homework pages have been updated — be sure to have a look.
Oct 3, 2019
Solutions to all of the quizzes have been posted.
Here is the solution to the old exam.
Oct 2, 2019
Reminder: Exam review session tonight, starting at 8:00 p.m. in Hoover 1213 — our usual classroom. Attendance is not required, but if you have questions, come and pose them. I will answer until you run out of questions.
A first draft of the "Intro and DC circuit" LTSPice tutorial is on the web site. Look for it on the SPICE page. It's not quite finished — it needs another couple of paragraphs describing how to extract results when using macOS. But the material should work fine for Windows. (And Mac users can get 90% of the way through.)
Sep 29, 2019
Here is Exam 1 from Fall 2018. The exam formula sheet that will be provided during the upcoming exam is at the back. Answers to these old exam problems will be posted later in the week.
Sep 25, 2019
There was a small typo in the value of one of the resistor in HW prob A10. The value of R2 should be 2.2 kΩ not 2.2 Ω as was originally listed. Be sure to use the correct value when working the problem, otherwise the small resistance will skew the results significantly.
Sep 24, 2019
Just a note to let you know that there will be a change in office hours today. I will be sitting in with the section 1 lab from 11:00 til 2:00 in Coover 2014. You are welcome to visit me there if you have questions about homework or anything. Then I will be in my Durham office from 2:00 to 3:00. At 3:00, I will probably go out to my MRC office.
Sep 23, 2019
Homework problems A5 - A8 for HW set 4 are available. The final two problems will be posted this evening.
Update: Homework problems A9 & A10 for HW are now also on the web site. This completes HW set 4.
Sep 16, 2019
Homework problems F11 and F12 have been posted. This completes HW set 3.
As mentioned in class on Monday, there will be no quiz in class on Wednesday. There will be a quiz on Friday. Check the schedule for the changes.
Sep 15, 2019
Two more homework typos to fix. HW-A1, part a: The power being delivered should be 30 W, not 15 W. (15 W would lead to a negative value for R8.) HW-A3, part b, the second sentence should be "When the switch is open (R3 not shorted), iR2 = 10 mA." (Originally, it said iR1 = 10 mA.) Both problem descriptions have been updated to remove the errors.
Sep 15, 2019
Homework problems A1, A3, and A4 are available. ( Homework A2 needs a bit more refinement and will posted later today.) Homework problems F11 and F12 will be post after Monday's lecture.
Sep 12, 2019
Reminder: Our quiz tomorrow will be over equivalent resistance. Be sure to try a few practice problems before hand.
There are two typos in the homework problems.
- The first is on homework F8. The power being generated by IS2 should be 75 W, not 100 W. Everything else is the same, but here is a bonus hint: The current and voltage for one of the resistors will be “surprising”.
- The second is on homework F9. The current direction and voltage polarity for resistor R1 should be reversed. (Or alternatively, the given value for R4 should have -4V.)
I have corrected the homework problem sheets to fix these two problems. If you download new copies (be sure to that your browser is not showing you cached copied), everything should be fine.
Sep 10, 2019
The "using Kirchoff's Laws" practice problems are available, if you haven't seen them already. Recall that our quiz tomorrow will consist of problems exactly like these, except that on the quiz, you will be asked to calculate only one or two quantities, instead of all the quantities.
Sep 8, 2019
Schedule change: There will not be a quiz in class on Monday. After thinking about it for a bit, it's pretty obvious that we are not quite ready for a quiz on Kirchoff's Laws — there is more class work to do first. So no quiz tomorrow and the quiz on Wednesday will cover Kirchoff's Laws. I will make practice problems available so that you can prepare for it.
Sep 4, 2019
Note that I've made a small change to HW F4. The voltage for an AA-sized lithium is about 1.2 V. (Compared to 1.5 V for an alkaline battery.) I neglected to point that out in the original version of the problem. Use 1.2 V when determining the energy of the lithium battery.
Sep 3, 2019
Due to some unexpected schedule changes, I will not have office hours today. I should be able to have office hours tomorrow and Thursday at the scheduled times. Sorry for the inconvenience.
Sep 2, 2019
Homework problems F4, F5, F6 are available.
The link for the lab material is functional and you can see the lab description for Lab 1. Note that this is a two-week lab, and some of the measurements described involve topics that we haven't covered yet.
There have been questions about consideration of significant figures when doing calculations. Of course, as engineers we must pay attention to significant digits in the numerical results. If you are a bit fuzzy about significant figures, you can try reading the Wikipedia article, which is about a 10-minute read and seems fairly clear. Or you can watch the series of Khan Academy videos. Start with the intro video and work your way through the other 3 or 4. We can also discuss them in class – just ask on Wednesday and we will go over the basic ideas.
Aug 29, 2019
Homework problems F1, F2, F3 are available. Access them through the homework page or the schedule page. These are due on Sep 6.
Reminder: Quiz 1 covering charge and current is tomorrow in class.
This is the web site for EE 201, sections 1, 2, 3, 4, and 9 for Fall 2019. Some of the above links are not active now – they will be enabled as the start of fall semester approaches.