amante pensanta: Isn’t that the truth? I’ve been an engineer for over 45 years. I’ve lost count of the number of times that I’ve encountered various technologies and asked “Who thinks of this stuff?”
I am a fan of logical unsurprising progression. Learning about logical unsurprising progression that occurred over hundreds of years within the course of a few months in a college class does in fact appear very surprising to me. I'm glad you have a galaxy brain that already knows everything; maybe you can tell us how to solve our world's problems, if it's that uninteresting.
Of course, no one came up with the idea overnight, and certainly not from scratch. It's the result of continuous progress over time with many trails and errors, until we come to the current point.
You're the best in explaining even very complex things in non-complicated manner. I need to refresh my not-often-used knowledge every couple of years - and you can do this in matter of minutes. Kudos. 👌
I took a full year of electronics theory and semiconductor device fabrication a decade ago and wish this had existed then. The way Ben explains it is just so straightforward and easy to understand.
After many university lectures, different youtube videos, this is the first time that i actually understand PN Junction. You have such an awesome way of explaining things. If you're not a university professor, then it would be a big loss for many students
Brilliantly explained, Im studying civil eng. but having to do a unit on engineering materials and I've been struggling to get my head around electrical currents and the like but you video explained it in terms I can understand. Many thanks
This is so much better explained than in many text books, thank you so much! And I applaud you for correctly explaining current to flow from - to +, I'm always getting so confused when textbooks try to make things easier by simply not telling how it actually works (which is also how school works btw :) ).
Thanks a lot! After 40 years I've found clear and understandable explanation how it works! (I'm not working in this field, but I was a computer fan in early 80s and I love all this staff like ZX80, 6502 and so on). Your views are great!
you just explained in 15 minutes what my university teacher took like 30 minutes to explain and you somehow made it sound interesting and not boring. Also, i'm spanish and the funny thing is that i understood way better this explanaition (not my native language) rather than my teacher's (my native language) Outstanding
You are REALLY good at explaining this stuff! I've watched a couple of videos and am now subscribed. Your calculator tutorial immediately made sense even though every other explanation I've seen didn't.
Chemistry has always been a struggle for me but I love computer engineering as a whole. This video was so clear with its presentation, I actually have some confidence in understanding how this works. Thank you so much.
For anyone confused by the very end: look up the difference between drift velocity and electrical current. It took me forever to find this info. Electrons actually move very slowly when current is flowing. But the energy pushed through them flows at near the speed of light. Very complicated and weird, but useful for those who want to dig deeper. "Electric energy" so to speak, flows almost instantaneously. Electrons, however, move at mere millimeters per hour.
I have a good analogy for that which helped me understand the difference: Suppose you have a tube a mile long that is packed with marbles side by side in a single line. If you push a marble into one end, one will pop out of the other end almost instantly. Each marble only moved the width of a marble but the effect manifested a mile away. Electrons in conductors are much like marbles in such tubes.
I have been trawling through you tube videos and web articles all week searchng for a really good elementary explanation of how the semiconductor (and specifically the diode) works, but until now without finding anything really satisfying. Always there has been some defect - some were too superficial, some too technical, some skipped over essential steps in the explanation (leaving you asking in exasperation ... "yes, but WHY???"), some contained obvious mistakes and inconsistencies. This one was perfect. Good graphics, all the steps in the explanation present, and narrated by someone who speaks clearly and at just the right speed. Many thanks.
I never feel any reason to regret the time I spend watching your videos. You are a superb teacher. Thank you for the electronics engineering lesson. I have my degree in electronics, by the way, albeit in more of a technical manner, but this was still priceless.
Perfectly explained .I did electronics in college and even our teacher had 2 degree, one in electrical engineering and next in electronics ,somehow he couldn't do it so well as this youtuber. From all the digital electronics tutors on the you tube, he is N1.And by the way who are those 26 ,who disliked the video? I see probably some Nobel holding physicians or just junkeez.
Just had a braingasm. Years, years, years, I have tried to understand this to no avail. Thank you so much for this. Better education for free online than when I tried to learn it at university.
Thank you..I seen all your videos. You are really really awesome!! I actually want to say you that it completely changed my notion towards electronics, networking and computers. Very very very well taught..Thank God for finding you and this channel..Looking forward to you and more.
Wow, awesome explanation @Ben. I love your videos, especially this one. About four years ago, when i was freshman Physic college, i asked a senior electrical engineering about why we used diode symbol that has reserve current flow. Very glad i have found the answer in the end of this video. Thank you.
This is great! Thank you for the wonderful explanation. I definitely benefited from this. I am working on a Chemistry project in engineering college, and this really gave me a head start on where to go with it. Thank you again.
Incredible explanation! Hopefully, you will have more videos up explaining about various subjects on engineering. This video is not only clear and concise, it teaches us at more of a "human" level rather than expecting everyone to have a PhD to fully understand.
You are one of the best teachers in this world. Please,. just please if possible, make a series of computer science lessons, from very ground up theory to let everyone actually know what is going on. I watched a ton of CS related videos, I could say, you are at least one of the best, if not the best best best, I really doubt you are an earther, you must be alien, with such a high level knowledge of everything, what a splendid learning experience. Please, teach this world a better CS lesson, we really need a teacher like you. I know making videos is very hard and time consuming, just, if possible, this world need this! (PS: I watched your 4 bit adder video, really learned a lot, I want to learn everything from you, teacher :)
Very good Ben. I was just plodding along in my CS50 course learning C, then Googled "C assembly comparison" out of curiosity, found your video on Comparing C to machine language, then your breadboard computer video, then I googled 8 bit computers, found your website, and finally a link to this video, which is much more fun than when I learned semiconductors during my Physics degree ten years ago, because now I have a context. I actually dropped out of that degree, but it's funny how life takes you full circle sometimes! I look forward to looking at all your work! Your videos help me learn much faster than by reading a book, so thank you. Should probably get back to my course now :))
Stunningly well explained!! I've read about this in a few books now, and was >sort-of< getting it, but this brought it all together very, very clearly. Thank you, Ben!
I took like 12 credit hours worth of electronic materials science courses in college that I just barely got through, and this 16 minute video explained it better than all of them combined.
That was very well explained! I had an electronics course last semester but never actually understood the physics of semiconductors and transistors. Very helpful videos.
Some people explain with as if we're too dumb which further confuses me with all their abstract example in an attempt to simplify. You my friend dignified my brain, and this video has helped me understand semiconductors
u rock man !!!!..this was one of those topics which just went over my head whenever i tried to understand it and u hav made it super simplified to understand thanks a lot...
Man, thank you! I have a presentation tomorrow to explain transistors, but i didnt understand this from the teacher. I found this video when i came across the transistor video, and it helped me allot. so again thanks man :D
Thanks for the awesome explanation! I wouldn't say that it's "incorrect" to think of the circuit flowing from + to -, it's just not considering the flow of electrons, as we'd intuitively imagine, like flowing water. Instead, as you explained, the "holes" in the P-type can be described as a positive voltage and so the circuit has a figurative positive voltage flowing from + to -.
