How FETs Work - The Learning Circuit
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- เผยแพร่เมื่อ 13 พ.ค. 2024
- In this episode, Karen talks about the two common types of field-effect transistors, MOSFETs and JFETs. Find out the differences between them, and what it means for them to work in depletion and enhancement modes. Connect with Karen on the element14 community: bit.ly/2FLa664
- วิทยาศาสตร์และเทคโนโลยี
Hands down the best explanation of MOSFETS and JFETS on TH-cam! Thanks! 👍🏻
I had this all in college but with these Visuals I see it so much clearer. I wish I had access to these visuals back then.
Glad i got this video for college 😜 this’ll help out a ton
This channel always help me for my studies. Thank you so much. During lockdown my college is closed but thanks a lot to channels like of your one and TH-cam for availing a online study platform for us students.
This is the best explanation of FETs I've come across youtube. Well done!
The visualizations in this series really help!
Karen, your videos are awesome !!! . really appreciate for the great knowledge. Very simple, descriptive and clear understanding.
I can't believe how good this video explains the topic. Unbelievable
Thank you very much, this video was so helpful to me, and I'm looking forward to seeing many more.
This was really clear and concise! Very easy to understand!
Thank you!! This is the best explanation I could ever hope for! I though I could do it on my own, but I was mistake.
The best explanation video one could find is this
This is really good stuff thanks for putting this out there!
Best explanation I've had. Thank you
Great explanation. So clear. Well done. I now understand something that I have never understood.
Excellent presentation. This has been helpful. Thanks
Thank you for these videos!
Best transistor video on the internet that I've ever watched
thanks for the class .............god bless you
Great simulation. Thanks a lot
So well done. Thank you.
Excellent presentation 👍
Thank you so much . Keep the great work going
It gives more clarity and understanding. Thanks
Fantastic explanation, thank you very much.
Your explanation is good and clear 👍
Thanks for the generosity to teach !!
I would suggest to slow down the pace of the teachings, to help beginners get a better grasp of what's being said.
Thanks again.
Adjust speed of recording device behind gear wheel at corner of You tube window screen.
Thank you so much for your help
..good visual explanation, thanks👌
Very nice thanks for your help and training
Thanks, Karen!
Thank you so much, Karen!
Thanks
thank you very much, loved it.
Your videos are owesome thank you
This explanation was SPOT On.
We will get good knowledge in how to work transistors ❤
Mam, Ur are very very good at teaching,u are just mind blowing,amazing mam,thank you for your information ❤❤❤
you make me cry ..you are great teacher ^_^
Jan Caspar Esguerra I did a degree in electronics and I must say that Karen does a very capable job. Always nice to remind myself of the basics lol
Cheers Karen!
At 0:40 I think you compared a PNP BJT with a N-type MOSFET, because the drain should be the equivalent of the colector, gate-base and source-emitter.
I was thinking about that... 🤔
Nice Informative video
Man if I had a teacher like this during the transistor classes a school I might have actually paid attention.
probably your attention would not be focused on the subject. :)))
@@bollingermailru The subject is subjective
@@rcallumto5627 HAHA
Could a FET be used similar to a potentiometer (varisistor)? Even if a lot of heat would be created to waste energy
06:22 : How is it possible that the drain current can be larger or smaller than the source current in a Mosfet? (Apart from the tiny charge to initially charge the gate.) Is this not an error in the video?
Great video Karen. When will you do one on OP-Amps?
It's on the list, but it'll be a while.
2:21 why the Gate Source voltage needs to be lower than the Drain Source voltage to a depletion zone happens? In a normally PN junction the higher the voltage is, the higher is the depletion zone (if it is reverse connect)
❤ thank you
When you come back to teach, I will come to listen. I like to see women teaching.
Seems that the D-mosfet was not forward biased to increase the channel width in the last portion of the video, wouldn't the gate need a positive charge,drawing negative charges into the channel from the substrate, increasing the width of the channel and there by increasing current through the mosfet, the battery, it seems, should of been switched in polarity from the last screenshot but wasn't? Great videos though and much appreciated, thanks :)
great video
Tks Beauty girl, exelent video, 💯
very helpful
Thanks sister
wow ! thanks !
So enhancement mode MOSFETs work more like BJTs?
Thank you Thank you
Can you explain for us how to calculate the gin's of transistor?
Simply put it, in a n channel jfet, you increase the negative reverse bias gate voltage. - vgs . In a p channel jfet, you increase the positives reverse bias gate voltage, + vgs.
aren't the VGS + and - reversed(+ should be on the top) when mosfet is operated in enhancement mode? at 6:04 . Greetings and thanks
I believe you are correct
thank you clever girl
Very good video I like
Hi Karen, I love your videos! Im just a bit lost in the word "bias", I don't understand what it is and in the video you say things like "the more bias the gate becomes" and "to increase the bias". I understand the principle of reversed bias or forward bias, I just don't follow it when it is used in a different context. Can you please enlighten me :) thanks so much!
Hi Anne, The word "Bias" means the operating point of the transistor. The DC Bias is required to make the transistor in the active region such that it can be used as an amplifier. Transistor have 2 regions, (Cut-off, Active & Saturation). Proper Biasing of the gate voltage makes the transistor into active region. Karen, please correct me if I am right. Karen your videos are great and very easy to understand the basic concept . Thank you
FETs are the solid state of Vacuum tubes so what about a FET version of the CANADIAN WESTINGHOUSE 656?, Drain:=Plate Source:=Cathode.
Gate:=Grid
Aww you're so sweet teacher love it 😀
I understand it's function,what is about working principle of IGBT
great!
Is p for + OR -, in all transistor
how to find SMD capacitaor value
It so usefull
Simply put it, the difference is, vgs reverse bias voltage, decreases current flow, and the higher vds, in increases the current flow.
Hi Karen, at 6:05 the + of Vgs shouldn't be on top?
Im thinking the same
You're awesomee
VGS battery terminal symbol (VGS) is not correct for the depletion MOSFET for the forward bias. Overall video is good, thank you!
There is a mistake on the video. You state the source on the FET is equivalent to the collector on the BJT. The opposite is true. Drain = Collector; Source = Emitter.
In FET, holes move in same direction with current which flow from drain to source. However, in BJT case, current flows from emitter to collector also the holes. As a result, Drain = Emitter and Source = Collector.
@@hasancanar3125 Wikipedia is not the only reference that says so, but for example, Wikipedia says, "All FETs have source, drain, and gate terminals that correspond roughly to the emitter, collector, and base of BJTs." The other sources will also agree.
@@hasancanar3125 From "FET Circuits" by Rufus P. Turner 1977, Ch. 1, pg. 12; "The drain is equivalent to the plate of a tube or the collector of a regular transistor; the source is equivalent to the cathode of a tube or the emitter of a regular transistor..."
check out CircuitBread's video "How a MOSFET Works - with animation! | Intermediate Electronics" and "What are the Different Regions of Operation for a FET? | Intermediate Electronics" they are good complements to this video that fill in some little details that can clarify things
Love you
Hey could you try this software? scan circuit solver on the playstore!
Sound level is low compare to previous Video "how trns work".
Cool... time to buy a handful of JFETs... I know that I'll pop a few by accident.
Now Im less confused😎
my lovly carins
love you zelda shirt
I don't get it. Back to trying to fit a circle block into a square hole
Sister please slow down I'm confused. you explained great but I'm a dul student
You get my thumber... kept going on
You give a lot of information very quickly. D channel this and gate that and n channel forward or reverse! We no sooner get a chance to look at the picture and you are on to the next one. I know, pause and look at it. Explanations and examples would help alot. I have been trying to understand these for years. Those teaching this know the information, are usually bored by the process, and can't see why we don't understand something that they learned years ago. The point is some of us are trying to learn what you have already learned and as yet cannot find a way to understand the subject. Slow down Sheldon or we will never understand Dark Matter (The Big Bang Theory)!
I can relate to this - I'm looking for a solution for a project that's way beyond me, and I THINK I'm getting really close with n-channel e-MOSFETs from these videos (this one particularly), but I'll have to re-watch and poke around in some other places to narrow things down. Heck, I'm still struggling with cathode and anode...positive and negative make much more sense right now. More comprehensive and specific videos would probably help more than these compendia.
You can slow down the video and pause to look at the picture and rewind. There is no quiz at the end.
@@Cyberplayer5 You can't improve pronunciation this way, and you shouldn't have to. There is one spot where she means to say "and" but it comes out "N"
Some practical examples of what they can do would be helpful.
best video on fets on youtube, the others are too theoterical , lack content, amateurs or nothing didactic. ⭐⭐⭐⭐⭐
It is much easier to learn when your being taught by a cute teacher. All my professors were old men.
Failed an interview at dream company because I didn't know what's JFET.
I find it very disconcerting that you use + to - current flow
She an work in an auction as the best fast talker.
Something you may not know is JFETs behave a lot like vacuum tubes.
i felt like i was again 8 years old and my mom was teaching her stupid son how to multiply 3 digit numbers with 2 digits like a boss
Aw shucks, I was hoping to learn more about my cat.
please go slowly..u had that hussain bolt shoes
Too fast, slow down. Please
You can adjust the speed in the video settings. I do it all of the time for very slow speakers (speed it up) and for fast talkers (slow it down).
Veritas engr student gather here 😂
...my professor took 4 hours to explain this AND IT STILL DIDNT MAKE SENSE!
I didn’t understand any of this
she just likes to talk fast