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.

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

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

Frankly, there is no better lecture on the interent, almost none goes this deep to explain how the elctrons and holes work, after searching for a week to understand it and reading books this one is the best.

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.

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

i made a whole project about bjt's and mosfets in middle school. learned more by watching this video than when i did that project. well done lol

You explained it way better than my Iranian instructor(No Bias), back in the day, Dave. Many thanks!

I would LOVE to see a nice video about how to drive MOSFETS and BJT, including high currents, and inductive loads with "soft off" AWESOME video!!! Learned a lot! Thanks!

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

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!

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

Thumbs up Dave, just like the lectures I went through at University.

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

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

Thanks a lot Dave for your work and your time! I deeply respect people like you who take their time to spread their knowledge free. Of course, some "Iknoweverythingandimbetterthanyou" people will criticize your work, but what you do is popularization of electronic sciences (and you never claimed it to be anything else, and... no one's perfect). So thank you again!   BTW, if i may, you should do also a thursday, wednesday or whatever day lesson, where you present and explain, in a 5 minutes format, week after week, a simple electronic circuit function: example like limiter current system, protection system, etc... but kind of circuit that you build with less than 10 basic components (resistor, transistor, capacitor, diode, even AOP in the most extreme case), not the one that you build round with a specialized IC.

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

very nice video. I spent hours and hours to try to understand the principle and I felt exhausted and depressed. Your YouTube can make me understand within a hour.!

Yr 12 physics exam on monday, one section is transistors. You couldn't have timed this better