EEVblog #748 - How Do Transistors Work?

Literally the best lecture on semiconductors I've ever seen.

I used to work at IBM making microprocessors. When you described the MOSFET gate operation, I was reminded of how much time our engineers spent perfecting the gate oxide layer. There were 40 PHD level engineers working full time on gate oxide quality. Good oxide equals faster speed. The more expensive fast CPU processor is identical to the cheaper CPU except for the quality of the gate oxide.

The clearest explanation of how transistors work I have ever seen. Thanks Dave!

I learned more in this 23 minute video than I did during an entire semester of my semiconductors course in college. Well done!

Nice!! These are my favorite videos of yours. You did one similar with op amps. I absolutely love these. They are the reason I subscribe. Thanks so much!

I've just started studying electrical engineering and I don't get the textbook and I never understand anything on the lectures, so each time i have a test or a laboration I just look at your videos and suddenly I'm the smartest one in the room, despite knowing nothing and feeling devastated just hours before. You've literally saved me from failing and even helped me get better grades than I thought was possible. You are the best teacher and I wish the best for you.

Thanks for taking the time to make this video. I have learned something new today and you're responsible for that.

+EEVBlog, that's the best explanation ever, textbook authors should learn how to do this from this one! Massive thumbs-up! Thx!

Fantastic video, with probably the clearest explanation I have seen so far on this topic. It is something that is actually difficult to teach and you did great!

Best lesson on semi-conductors I've experienced online or in class. Thanks EEVlog!

I've always wanted to know the difference between BJT and Mosfets and this video explains that and even more! Thanks Dave and Keep the great videos coming!

definitely interested in more vids about how semiconductor devices work!  I've been having a little trouble fully grasping how they work, but your detailed descriptions with visual aids definitely clarify things nicely.

Really good explanation. I love this channel! A lot of useful stuff. Thank you ,sir !

Great videos! Appreciate the level and detail you give when explaining.

I love how you specifically distinguish conventional current and electron flow. Fabulous!

Never commented on your videos before but I've been watching this channel for over a year so I thought I'd write one now: EEVblog is full of great insights into electrical engineering, and Fundamentals Friday is my favourite segment. From and inspired by it I have learned a lot of electronics basics. I wish my teachers would've been as inspiring as you are. Maybe I would have gotten into electronics earlier. Electronics for me have turned from a hobby into a job and I'm loving every moment of it. Keep making these videos. You rock! Sincerely, Panu

awesome video! i'm about a month into my circuits 1 course at university and this video is very helpful at helping me understand how transistors work! Hopefully a bit more practice with the calculations and i'll have these things down for the test in 2 weeks.

This video should be required viewing in all basic electronic courses. Very well done, Dave.

Thank you so much for this, Dave! I have struggled to understand how transistors really work for years, and you completely cleared it up for me!

Thank you so much! This was very informative and detailed. I loved the Moore’s law explanation at the end.