The FET (field effect transistor)

Whenever I feel down, I come here..not to study..but listen to his voice , he makes us feel like everything's gonna be alright.

This guy's voice alone is worth a thumbs up.

I wish professors would come and learn from you how to present their lectures to students. You make everything easy to understand. Thank you very much, Sir.

You, Sir, deserve an Academy award for holding my attention for over 30 minutes on this subject.

Wow, I am not going to fail my exam after all.. Thank you for this video.

Your voice is so smooth I get goosebumps. Definitely kept my attention span for the entire video. Nice job!

Just a comment on way of speaking: near the 9:27 point, I describe the source and the drain as the parts of the channel where electrons "appear" into the channel and "disappear" off the channel, correspondingly. Of course, the electrons will not disappear from the circuit, they will just continue their journey through the cables, external resistors if any, and through the source to "re-appear" at the source terminal of the channel again. This way of speaking, which was coined by the original creators of the device may sound odd to modern ears. Remember, the "appearance" and "disappearance" is given with the channel as the proverbial context. I thought this would be evident, but it was not so to one of the almost half a million viewers, so I figured that this comment might be of help.

Well explanations everywhere but the fact you feel the need to share and reasons of your belief, hats off sir. You deserve all the gratitude. And that voice, i would say is more of a capturing one, not letting the visitor stray... I would like to send you some of my appreciation as a gift if i ever had your mailing address.

This was a great refresher ! I studied the transistors (and I kind of hated them) in college, almost 20 years ago and I wish the theory was presented then in such a clear and enjoyable way as it is in this video. Thank you for the explanation, and for your willingness to share the knowledge and  make it so accesible. Hats off for that. And, I love the accent.

your video has just made me amazed... for an hour, I was thinking, how one can teach so smoothly... easily.... like a music... I have shared your video to my students... even teachers can learn from your video...... and what an amazing voice you have.... thank God you are in this "field" ("field of Electronics")

Dear Dr. Arias, Thank you so much. It is very kind of your to take the time and post, and you are an inspiration to the rest of us too. Sincerely,

u are my legendary, doc linaries , i was one of ur student before and u write reference for me, now i was graduate, i miss u so much

Congratulations! This is the best master explanation about transistors components I have ever seen: really accurate, clear and detailed. Thank you!

u are gr8...this is the first time in my life of 32 yrs that i hv understood FETs

great teachers can make even most boring subjects most interesting...and you are the one. Thank you

Not even watched the video yet but from the comments I feel very optimistic. Hope I won't be disappointed

I completed my major in mechanical engineering and somehow struggles in dealing electronics stuffs. This kind of educational material could never be better and really help me a lot. Deeply appreciated!

I love your warm voice! It's a pleasure to listen your lectures! Thank you very much!

This is an excellent tutorial starting from basics of PN junction and step by step building into understanding of whats going on inside FET and relating it with its I-V characteristics. I love the way the lecture is organized and detailed, it couldn't have been any better. Thank you so much for teaching me and I look forward to your MOSFET video.

This video was truly inspiring!!! I understood almost everything even though it introduced an entirely new transistor I knew hardly anything about before. The diode tutorial bit was well worth it as well.