I took ECE100 with Professor Zhang and I think he is a good professor. He lectures well and covers the basics of circuits. He also shows us some real world applications of what we learn at the end of every lecture, which is cool. However, he went too slow in the first half of the class, which was mostly review for me since I had taken ECE3 and Physics 1B/1C before. Then, he went too fast in the second half, especially on MOSFETs, (which would later become super important in ECE115C). I wish he had spent more time on those topics and explained them better. The homeworks were mostly fine, except for the one on MOSFETs, which I couldn't finish it on time. The exams were also mixed. The midterm was too long and had too many problems, especially on 2nd order circuits, which took a lot of time to solve (but he curved generously!). Thankfully, he learned his lesson from the midterm. The final was better, as it was shorter and more balanced. He also gave us a practice exam before the final, which was helpful (a bit too helpful?). He graded generously and gave a lot of partial credit.

Overall, I learned a lot from this class and I liked Professor Zhang. He is a nice guy and has a good sense of humor. He definitely cares about his students and tries to make the class interesting and relevant. The only complaint I have is the pacing, but definitely take it with him if you can!

Awesome course, and I would definitely take another with this professor. The lectures were clear and engaging, and if you showed up to them, you should be able to do the homeworks and exams.
Homeworks were quite long but doable. I usually started them the day they were due, but I would recommend not following my example and starting beforehand. Homeworks and the practice exams given were very good at preparing you for the content on the exams. Even if you found the content confusing, you could brute force the exams simply by studying the practice exams and going to office hours if you don't understand something on them.
There was also a good amount of leeway given in the class: one out of the five homeworks was dropped and 1% EC given for doing the course evaluation. You could also get 2% EC for being in the top 10% for answering questions on Piazza and getting your responses endorsed. This sounds hard, but in our quarter, you only needed 4 endorsed answers to qualify for this.
Overall, I truly enjoyed this course, and I wish more courses were like this one.

Zhang is an amazing lecturer and makes concepts very easy to follow even for non ee majors. if you attend every lecture and take good notes you should have no problem doing well on exams. exams are fully open note which helps. the final was 10 questions which was a lot to complete in the 3 hours. homeworks could be long (10 questions) and we had hw up until the last week which wasn't great. there are no actual discussion sections, TAs will hold office hours that serve as discussion sections. overall solid engineering class.

Professor Zhang was incredible. Very patient, kind, and well-spoken. I'm a lot more interested in the material than I used to be.

Professor Zhang is a great teacher and the class is structured very well to help students who ask questions. It definitely isn't an easy topic, but he will support you through it.

Just boosting Yang's stats. Definitely the one to take