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 UA-cam for availing a online study platform for us students.
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.
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)
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 :)
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.
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..."
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?
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
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
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.
@@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"
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
Hands down the best explanation of MOSFETS and JFETS on UA-cam! Thanks! 👍🏻
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 UA-cam for availing a online study platform for us students.
I can't believe how good this video explains the topic. Unbelievable
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.
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... 🤔
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.
The best explanation video one could find is this
Best transistor video on the internet that I've ever watched
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
It gives more clarity and understanding. Thanks
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)
Great explanation. So clear. Well done. I now understand something that I have never understood.
This explanation was SPOT On.
Great video Karen. When will you do one on OP-Amps?
It's on the list, but it'll be a while.
This was really clear and concise! Very easy to understand!
Excellent presentation. This has been helpful. Thanks
When you come back to teach, I will come to listen. I like to see women teaching.
Best explanation I've had. Thank you
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 :)
Mam, Ur are very very good at teaching,u are just mind blowing,amazing mam,thank you for your information ❤❤❤
thanks for the class .............god bless you
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.
Thank you very much, this video was so helpful to me, and I'm looking forward to seeing many more.
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.
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
How to make MOSFET to work like a capacitor. What is the maximum capacitance achieved so far. in farads?
..good visual explanation, thanks👌
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..."
Fantastic explanation, thank you very much.
So enhancement mode MOSFETs work more like BJTs?
Very nice thanks for your help and training
at 0:44, isn't it source=emitter, base=gate, collector=drain? correct me if i'm mistaken
Your explanation is good and clear 👍
This is really good stuff thanks for putting this out there!
I understand it's function,what is about working principle of IGBT
Thank you so much, Karen!
Thanks
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?
Thank you so much . Keep the great work going
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
Your videos are owesome thank you
Simply put it, the difference is, vgs reverse bias voltage, decreases current flow, and the higher vds, in increases the current flow.
Excellent presentation 👍
So well done. Thank you.
Could a FET be used similar to a potentiometer (varisistor)? Even if a lot of heat would be created to waste energy
Thanks, Karen!
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
Thank you for these videos!
We will get good knowledge in how to work transistors ❤
thank you very much, loved it.
Thank you so much for your help
VGS battery terminal symbol (VGS) is not correct for the depletion MOSFET for the forward bias. Overall video is good, thank you!
Great simulation. Thanks a lot
Cheers Karen!
Is p for + OR -, in all transistor
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
Can you explain for us how to calculate the gin's of transistor?
Thanks sister
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
Tks Beauty girl, exelent video, 💯
very helpful
Nice Informative video
great video
Thank you Thank you
Sister please slow down I'm confused. you explained great but I'm a dul student
Very good video I like
❤ thank you
Cool... time to buy a handful of JFETs... I know that I'll pop a few by accident.
how to find SMD capacitaor value
wow ! thanks !
Aww you're so sweet teacher love it 😀
I don't get it. Back to trying to fit a circle block into a square hole
Failed an interview at dream company because I didn't know what's JFET.
Some practical examples of what they can do would be helpful.
great!
Sound level is low compare to previous Video "how trns work".
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"
Something you may not know is JFETs behave a lot like vacuum tubes.
thank you clever girl
It so usefull
It is much easier to learn when your being taught by a cute teacher. All my professors were old men.
Hey could you try this software? scan circuit solver on the playstore!
You get my thumber... kept going on
You're awesomee
love you zelda shirt
Now Im less confused😎
best video on fets on youtube, the others are too theoterical , lack content, amateurs or nothing didactic. ⭐⭐⭐⭐⭐
Love you
She an work in an auction as the best fast talker.
017 Cormier Squares
I find it very disconcerting that you use + to - current flow
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).
my lovly carins
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
"There are two basic types of FETs."
Wrong. You forgot about the most important (and most awesome) type of FET.
The BOBA FET.
;-)
Its backpack's got jets!
DAMN! I was just gonna say that! Hungry? Make a boba bread with melted fetta cheese.
تتعجبني الحرك ديالك جميل جدا
...my professor took 4 hours to explain this AND IT STILL DIDNT MAKE SENSE!
Aw shucks, I was hoping to learn more about my cat.
I didn’t understand any of this