I am not satisfied with the quality of the lecture.

I am currently working in the electrical field, not electronics. (In the past, I also worked in firmware. Since I didn't major in electrical or electronic engineering, I struggled a lot in the beginning. TT) I often see juniors who focus solely on the formulas themselves, but when asked about physical characteristics, they don't really understand the essence or can't answer immediately. For example, when looking at the capacitive reactance formula $1/(2\pi fC)$, I tell them that rather than just memorizing the formula, they should first get a feel for it: "Since a capacitor's reactance decreases when the change in electricity is large, noise with a high frequency will be effectively removed through a capacitor connected to the ground." I explain that understanding this intuition before memorizing the formula allows them to solve problems faster in practice later on. I believe this lecture is excellent because it focuses more on the fundamental properties of circuits rather than just the formulas. (When I studied, I used formulas to infer basic properties, but the difference here is that this lecture starts with the basic properties first.) However, because it helps you see the essence first and lacks formulas, those who want to study more deeply might find it too simple. It seems difficult to apply the content to practical work based on this alone (I think it's impossible to make practical application possible through a one-and-a-half-hour lecture). Explanations of formulas, inferring basic circuit properties through those formulas, and practical application methods definitely need to be supplemented. I kindly request that you cover these topics in the intermediate class.

It was a confusing part, but your explanation was so good that I understood it well.

I'm a junior majoring in Physics. I've always been interested in analog circuits and wanted to pursue a career in that field, so I searched for and took this course. The instructor explained everything from basic analog circuit concepts to OP-AMP operating principles and applications in an easy-to-understand and kind manner, and also showed how to apply them in actual circuits, which was very helpful. I hope this course becomes widely known to people like me who are interested in analog circuits or whose career path is related to this field~