After 6 years still the best intro to FETs on youtube, thank you!

Everything you do is amazing.

The value of your electronics knowledge is exceeded by your skills in communication. Years ago I rushed through a college EE absorbing everything but not truly grokking it. Now I have the leisure of enjoying the craft and your videos are just a pleasure to consume like a fine meal. There are few KZfaqrs with these communication skills and it would be valuable in the long term for your videos to not only be stored on this one platform. Links break and platforms die, I hope these videos will survive - for the future generations (the ones who will have to repair all the old FET technology handed down to them)

Hands down, this is the best explanation of basic FET operation that I've ever heard and I have a PhD in analog circuit design! Great great video. Made my day that this is available.

After more than 3 years, I keep watching and rewatching this video. Brilliant!

I just love your tutorials! Your drawings are so well thought out and drawn. I'm a 73 yr old mining engineer who couldn't get enough electronics in college, but we barely had transistors then. I will probably ask ignorant questions, but about much of this information I am ignorant. Thanks so much for what you do!

One of the best teachers on here! Listen to this guy. Lots. Thank you so much for your time. 73's

In 20 minutes you managed to explain what my electronics teacher taught in 2-3 months of classes. Truly great refresher video for me. Thank you.

You are really a good tutor, teacher and presenter. We can appreciate this even more now during this pandemics, since many of us teachers are having to prepare video-lectures. This may look easy to do for the one watching. One clear indication of your talent is your fluency. Your videos have little cuts, usually related to change of settings/equipment, no cuts related to your text. You make it very simple and practical, no fancy boards or "special effects".Yet the content is quite clear and objective. I have been teaching Physics at the university for many years now. I believe your channel, including the pdf index, should be set as one of our world resources, since your style (direct to the point) is very useful for kids in technical schools and engineering students. Congratulations.

I love that the multimeter in the thumbnail reads 4007, which is the name of a CMOS transistor array. Thank you for the video, it was very helpful!

Very well explained and quite thorough. It is difficult to pull the characteristics of different devices together, but you did that very well. The only thing you may have left out was a detail about the physical model of a junction FET. Just like the MOSFET, a junction FET has a capacitor across the channel because the substrate is connected to the Source. The gate has a wider geometry than what you showed; at least according to Siliconix literature. The electric field inside this capacitor causes free carriers to migrate away from the channel region near the source and drain, creating depletion regions.

FINALLY! A clear & comprehensive presentation on Field Effect Transistors. I've been struggling to get a foothold/foundational understanding of these for years. While I've known there is a difference between JFETs & MOSFETs, I couldn't distinguish or get clarification on the subtle nuances of the different types. You Sir, are a modern day Forrest Mims. THANK YOU!

Best video on explaining FETs on KZfaq. I really appreciate your pace and paper and pencil explanations coupled with a scope demo. All your "back to basics" videos are superbly done. Thanks!

I know that this is somewhat arbitrary for most advanced people but for new guys it is very, very useful to see in what applications devices are used. First step of learning - replicate: try to mimic ones work step-by-step, all of it. Second - duplicate: try to make ones device without copying it, but by using ideas You got from set above. Third - upgrade: try to make ones device better. Forth and final: create: make Your own device! See, telling about transistors, FETs and all the other good stuff You're telling, is like fulfilling second to forth steps... Examples are awesome - all the measuring circuits, test circuits etc. Because they fill in gaps for fist step. ... what I am trying to say is ... more fist step! :D :D But great job, really... thumbs up! :)

I learn more in your videos than I did in some classrooms. You're channel is incredible!👍😀

You are the best electronics teacher!!! I'm very happy I've found your youtube channel! Though I'm quite experienced in electronics I have a lot to learn from you.

Your style of explaining electronics is black magic and you are a wizard of teaching. Thank you for your efforts to light up our minds.

Another great vid. Back to basics are some of my favorites! Thanks for all the hard work you put into these.

Thank you so much for taking time to make those videos. The quality of the explanations is amazing and the simple circuits that illustrate theory help a lot. Please keep up sharing your experience of analog electronics.

Unreal, so glad I found you. An electronics instruction at a click of a mouse button. Thank you so much for your work and videos!

This is the most educational channel I've seen. You have an excellent way of describing and explaining every concept. I wish I had found this channel earlier, I would be a much better engineer today. Thank you and keep up the good work!

I can't like your video enough. Amazing walk-through for basic FET knowledge!

Very well thought out and presented tutorial. Thankyou Alan. In one video you have managed to explain characteristics that took our teachers numerous lectures which still left me confused. Your video nailed the concepts and differences concisely and simply.

You are the best electronics teacher on the internet in my opinion! Thank you so much for putting these videos out there. These are priceless for electronic students!

Excellent intro to FETs. Really made the operation understandable, thanks!

This is the clearest explanation of the "FET family tree" I've found. My brain hurt trying to read the descriptions in textbooks. I love that current mirror trick for watching the current without disturbing the DUT.

What a great explanation! The best I've heard yet. Detailed, concise, and very informative.

I loved this video, very well explained, relly professional, shows exactly what a engineer or tech needs to know in a delightful structured master class, thanks a bunch !!

I learned this theory years ago, and admittedly haven't used it much since. Soaking in your excellent tutorial on the topic is very much akin to meeting an old friend that I haven't seen in years. Super good stuff! Thank you! 73, N6MKC.

You have a good way of explaining the electronic topics that you present on these videos. Thanks so much.

As a newbie to electronics, I have to thank you. Learning a lot from your videos. So you have a very grateful fan! Thanks again!

Hard to find good quality content about electronics on KZfaq. So I'm saving this to a playlist. This is good stuff, thanks.

I'll thumbs-up every Back to Basics video. So useful when you want to understand electronics

Thanks! You are an excellent teacher. With your discussion of complex topics such as this, and then your hands on demonstration, I can always learn something. 73

Your Back to basic videos are fantastic. Thanks Alan.

I've finished two years at university studying electronics and really not understanding how FETs work, its unreal. Thanks for this video. PS just found your channel today and am binge watching all your video lol :)

I have spent the last 30 years as an analog circuit designer. I just found your videos a few days ago. You have rekindled my interest in poking around in the lab. I love the hands-on nature of your videos. I have fallen into the trap of reading papers instead of independent verification as you do. Thanks for the inspiration. I subscribed, and am now watching your other videos. By the way, the family tree of FETs is a great way for me to remember things. Great stuff. As a side note, I too love hand written notes. I work for Caltech, and a bunch of us have fallen in love with an electronic note-taking tool called Good Notes. We use it with the Apple Pencil on iPads. Some of us teach entire classes now with the hand written notes. There's something soothing about it for both the students, and the teacher. It's great for designing circuits and not getting bogged down in a CAD package...

Best introduction on FETs that i've seen so far. Thanks a lot!

At 67 years old I have just started trying to teach myself electronics and have found your videos informative, consise & interesting! Your description of real life applications of the various components is very useful! Thank you for your excellent presentation!

Succinct and clear, great introduction video, thank you!

This is probably my 10th time watching this video to gasp in depth understanding of transistors in general. Your Back to Basics series are top notch and no other youtubers explains it to this degree. Thank you for taking the time put up these in-depth class-room feel videos! P.S don't ever lose the paper and pen(cil) way of teaching

Super clear explanations. Love the family tree. For somebody like me still figuring out what goes for what, it saved me alot of research. Thank you. Much appreciated

The best explained videos I've seen thus far on youtube, thank you so much !

Another great back to basic video Alan.Easy to follow, Well Done. Thumbs up.

Incredibly clear presentation. Thank you so much for sharing your knowledge!

The ARRL should footnote and have links to many of your videos in the General and especially the Extra Class manuals. You have been such a great help to me in understanding such difficult topics as you cover. Thanks so much!!

Now I understand it!! Great illustrations and an easy-to-follow video!! Thanks for sharing!!! ☺

You are psychic ... I was just reading up on JFETs when you uploaded this. Good job!

fantastic as ever. in fact it was my first to see the graphs on the oscilloscope. i always sow them in the books. thanks again.

Another excellent video! Thanks for spending the time to make these. I always learn alot.

*Very thorough and carefully presented. Thank you - this has helped me enormously.*

Very good explanation. You've made it very plain and simple for electrical?electronics technicians and engineers to understand. Good job, keep it up.

So very clearly explained. You are a great teacher. Thank you for this great material!

Brilliant video! Thank you. Excellent, logically, well paced, clear. Good work!

Its always very informative to watch all of your video.

Fantastic refresher! I've been away from electronics projects for a while but this video actually answered some questions I had a long time ago. I have to say that I laugh from amazement when I see how organized and diligently structured these lessons are. Master of details. Someday hopefully I will be more like this.

Very nice video with very good explainations and very clear diagrams. Keep up the great work.

Although it just an introduction to JFETs and MOSFETs its a great video. I always enjoy your videos. Nice work!!

Very nice video, explanation and demonstration. I really enjoy how you stay on point through all your lessons. I wish I'd have had instructors like you when I was in my engineering courses. Thanks & 73 de kb4twn

As always an excellently presented video. Thank you.

Great instructional video with examples! Fantastic.

Greatly informative video! Also great for review since it's been a while haha. Cant wait for the next one.

Superb tutorial, best online source of information. Thanks for the uploads, please keep the great work.

So glad I found this channel...!

Thank you. I am going to have to keep coming back to this video.

you are an amazing explainer ...i am learning from you and simulating side by side. totally new level of understanding. thank you.

one of the most informative vids i seen. well at least for me, as concerning mosfet's and cb radio's in final p/a transistor flow chart applications. i hope that isn't confusing. it makes sense to me, and i had to read it several times.

razor-sharp explanation, so much appreciated

You make things look and make sense to all that view. pity I didn't have you as a teacher back in the day. Cheers

You explain all this stuff as master. Thank for your knowledge

Pure Gold Explanation ! Thank you !

Great tutorial. I've said it before, you're an excellent teacher.

Really great and easy explained, especially using measurement of I-V curve is very understandable!! Thanks.

You are doing a great job ... I'm learning a lot here ... Much better then school... Carry on

The best electronics tutorial video. Thank you for sharing.

You should definitely bind those notes to form a book like forrest mims :) Need more videos on back to basics. A lot of people will be benefited Thank you for sharing :)

Beautifully made tutorial thank you. It interests me as a restorer of vintage stuff to note that the Jfet biasing is just like a vaccuum tube cathode bias method.

your videos are amazing , full of practical issues .... thanks

Great video. This is sort of a review of the things I learned, and mostly have forgotten, from my BSEE degree back in the "dark ages" (1976). What I was trying to remember was when to use a JFET and when to use a MOSFET. Most of the videos are on MOSFET technology. 73 de AF6AS.

very nice and detail explanation. Never knew the important details about mosfets and jfets

Thank you for a well done FET review!!! Well done.

Thank you for these videos! You're golden.

Nice job on this. The comparison is very useful

You sir, are doing God's work.

Thanks for the back to basics. I forgot most of these stuff

Great introduction to FET, Thank you!

Amazing video as always... One thing I'd absolutely love to see if you take a MOSFET and use it in a simple RF amplifier circuit and make a tutorial out of that. Subsequently I'd also like to see a MOSFET tutorial with an audio amplifier circuit. Pretty please, and keep up the great work.

This was a really detailed video. Thanks

Very nice explanations, Alan. You're a natural at teaching. Thanks! Would you consider a video (or few!) about characterizing power supplies? I've found almost zero comprehensible content that explains Bode plots, gain and phase, poles and zeros, etc. A W2AEW video explaining how to do feedback loop compensation in switchers would be epic.

You made my day volke !

Thanks for the explanation and bench demo.

Awesome... You are the best teacher... My humble request to you would be to write a basic electronics book emphasising the practical aspects of the circuits in a very lucid way as presented in your videos.

Yet another great video Alan, thank you. Berni Ken

What a great introduction!

Nice video, the way and steps you taked are profesionnal thank you

Brilliantly explained

Thank you! Best wishes from Lithuania!

Super. And your papers are works of art.

This cleared up so much for me! Thank you!

Great presentation. Very helpful.