How FETs Work - The Learning Circuit

Ғылым және технология

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

Пікірлер: 128

  • @davidharms3562
    @davidharms35622 жыл бұрын

    Hands down the best explanation of MOSFETS and JFETS on KZread! Thanks! 👍🏻

  • @lovernotfighter
    @lovernotfighter4 жыл бұрын

    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.

  • @bluewave2432

    @bluewave2432

    2 жыл бұрын

    Glad i got this video for college 😜 this’ll help out a ton

  • @gadgets.cracker
    @gadgets.cracker4 жыл бұрын

    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 KZread for availing a online study platform for us students.

  • @alexfunkhouser8627
    @alexfunkhouser86272 жыл бұрын

    This is the best explanation of FETs I've come across youtube. Well done!

  • @YousufAliMoiz
    @YousufAliMoiz3 жыл бұрын

    Karen, your videos are awesome !!! . really appreciate for the great knowledge. Very simple, descriptive and clear understanding.

  • @brettito
    @brettito5 жыл бұрын

    The visualizations in this series really help!

  • @copernicus6420
    @copernicus64205 ай бұрын

    I can't believe how good this video explains the topic. Unbelievable

  • @k.d.wilson6208
    @k.d.wilson62084 жыл бұрын

    Thank you very much, this video was so helpful to me, and I'm looking forward to seeing many more.

  • @StephenBrown85
    @StephenBrown852 жыл бұрын

    This was really clear and concise! Very easy to understand!

  • @divyangasivapragasam8206
    @divyangasivapragasam82062 жыл бұрын

    The best explanation video one could find is this

  • @industrialdonut7681
    @industrialdonut76813 жыл бұрын

    Best transistor video on the internet that I've ever watched

  • @alfrednyagbenu9944
    @alfrednyagbenu9944 Жыл бұрын

    Excellent presentation. This has been helpful. Thanks

  • @leeman3749
    @leeman37492 жыл бұрын

    Great explanation. So clear. Well done. I now understand something that I have never understood.

  • @kevinfortnum2362
    @kevinfortnum23623 жыл бұрын

    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.

  • @robertgalligan7273
    @robertgalligan72732 жыл бұрын

    Best explanation I've had. Thank you

  • @alhassancidaibrahim3676
    @alhassancidaibrahim3676 Жыл бұрын

    It gives more clarity and understanding. Thanks

  • @madelinejohansen7931
    @madelinejohansen79312 жыл бұрын

    This is really good stuff thanks for putting this out there!

  • @klappstuhl4370
    @klappstuhl43705 жыл бұрын

    Thank you for these videos!

  • @brenonavarro4401
    @brenonavarro44015 жыл бұрын

    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.

  • @user-vo6yr8rf4c

    @user-vo6yr8rf4c

    Жыл бұрын

    I was thinking about that... 🤔

  • @sar4916
    @sar49165 жыл бұрын

    Excellent presentation 👍

  • @user-ii6vb8ho8p
    @user-ii6vb8ho8p4 жыл бұрын

    Your explanation is good and clear 👍

  • @jesusstudentbrett
    @jesusstudentbrett2 жыл бұрын

    This explanation was SPOT On.

  • @krish2nasa
    @krish2nasa3 жыл бұрын

    Fantastic explanation, thank you very much.

  • @umanggupta7189
    @umanggupta71893 жыл бұрын

    Thank you so much . Keep the great work going

  • @GoatZilla
    @GoatZilla4 жыл бұрын

    Man if I had a teacher like this during the transistor classes a school I might have actually paid attention.

  • @bollingermailru

    @bollingermailru

    3 жыл бұрын

    probably your attention would not be focused on the subject. :)))

  • @rcallumto5627

    @rcallumto5627

    2 жыл бұрын

    @@bollingermailru The subject is subjective

  • @moments_with_IH

    @moments_with_IH

    2 жыл бұрын

    @@rcallumto5627 HAHA

  • @forhadahmed4643
    @forhadahmed4643 Жыл бұрын

    thanks for the class .............god bless you

  • @brielleibe8503
    @brielleibe85034 жыл бұрын

    Thank you so much, Karen!

  • @jeetenderkakkar7570

    @jeetenderkakkar7570

    3 жыл бұрын

    Thanks

  • @johnnytarponds9292
    @johnnytarponds92923 жыл бұрын

    So well done. Thank you.

  • @gholamalialmasi8906
    @gholamalialmasi89062 жыл бұрын

    Very nice thanks for your help and training

  • @alvarovelasco5217
    @alvarovelasco52174 жыл бұрын

    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.

  • @robertjennings397

    @robertjennings397

    3 ай бұрын

    Adjust speed of recording device behind gear wheel at corner of You tube window screen.

  • @abrahamadam8357
    @abrahamadam83574 жыл бұрын

    Thank you so much for your help

  • @wilsonwang1329
    @wilsonwang13295 жыл бұрын

    Great simulation. Thanks a lot

  • @MrCardeso
    @MrCardeso5 жыл бұрын

    Thanks, Karen!

  • @alhassancidaibrahim3676
    @alhassancidaibrahim3676 Жыл бұрын

    Your videos are owesome thank you

  • @yviestones2455
    @yviestones2455 Жыл бұрын

    ..good visual explanation, thanks👌

  • @ajaysan2765
    @ajaysan27654 жыл бұрын

    thank you very much, loved it.

  • @pvchandran9007
    @pvchandran90075 жыл бұрын

    We will get good knowledge in how to work transistors ❤

  • @amarasridurga2724
    @amarasridurga272411 ай бұрын

    Mam, Ur are very very good at teaching,u are just mind blowing,amazing mam,thank you for your information ❤❤❤

  • @alfredkaserekasivanzire9488
    @alfredkaserekasivanzire9488 Жыл бұрын

    When you come back to teach, I will come to listen. I like to see women teaching.

  • @JJSideshowBob
    @JJSideshowBob5 жыл бұрын

    Cheers Karen!

  • @robomaxx8719
    @robomaxx87195 жыл бұрын

    Nice Informative video

  • @reasonablebeing5392
    @reasonablebeing53925 жыл бұрын

    Great video Karen. When will you do one on OP-Amps?

  • @maker_karen1785

    @maker_karen1785

    5 жыл бұрын

    It's on the list, but it'll be a while.

  • @Ou20doIbere
    @Ou20doIbere Жыл бұрын

    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)

  • @jancasparesguerra4001
    @jancasparesguerra40015 жыл бұрын

    you make me cry ..you are great teacher ^_^

  • @ccandrew111

    @ccandrew111

    5 жыл бұрын

    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

  • @GelasioMaker
    @GelasioMaker5 жыл бұрын

    great video

  • @ytubeleo
    @ytubeleo2 жыл бұрын

    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?

  • @stevetobias4890
    @stevetobias48904 жыл бұрын

    Could a FET be used similar to a potentiometer (varisistor)? Even if a lot of heat would be created to waste energy

  • @jacopocanova7583
    @jacopocanova75832 жыл бұрын

    aren't the VGS + and - reversed(+ should be on the top) when mosfet is operated in enhancement mode? at 6:04 . Greetings and thanks

  • @ytubeleo

    @ytubeleo

    2 жыл бұрын

    I believe you are correct

  • @m101ist
    @m101istАй бұрын

    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.

  • @user-pt-au-hg
    @user-pt-au-hg3 жыл бұрын

    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 :)

  • @annecvg
    @annecvg3 жыл бұрын

    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!

  • @YousufAliMoiz

    @YousufAliMoiz

    3 жыл бұрын

    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

  • @ccdd5511
    @ccdd55113 жыл бұрын

    Hi Karen, at 6:05 the + of Vgs shouldn't be on top?

  • @TheSubConscious9

    @TheSubConscious9

    2 ай бұрын

    Im thinking the same

  • @asokadahanayake9875
    @asokadahanayake98753 жыл бұрын

    Thank you Thank you

  • @atikrahman2265
    @atikrahman22654 жыл бұрын

    Thanks sister

  • @eyuelbegashaw8609
    @eyuelbegashaw86094 жыл бұрын

    wow ! thanks !

  • @simozy4475
    @simozy44753 жыл бұрын

    very helpful

  • @alvenhchanne
    @alvenhchanne2 ай бұрын

    So enhancement mode MOSFETs work more like BJTs?

  • @GameSphere302
    @GameSphere302Ай бұрын

    ❤ thank you

  • @ClaudeDufourmont
    @ClaudeDufourmont Жыл бұрын

    Very good video I like

  • @carybaxter274
    @carybaxter2745 жыл бұрын

    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.

  • @hasancanar3125

    @hasancanar3125

    5 жыл бұрын

    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.

  • @carybaxter274

    @carybaxter274

    5 жыл бұрын

    @@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.

  • @carybaxter274

    @carybaxter274

    5 жыл бұрын

    @@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..."

  • @ELECTROxigeno76.
    @ELECTROxigeno76.2 жыл бұрын

    Tks Beauty girl, exelent video, 💯

  • @user-ii6vb8ho8p
    @user-ii6vb8ho8p4 жыл бұрын

    Can you explain for us how to calculate the gin's of transistor?

  • @m101ist
    @m101istАй бұрын

    Simply put it, the difference is, vgs reverse bias voltage, decreases current flow, and the higher vds, in increases the current flow.

  • @DAVIDGREGORYKERR
    @DAVIDGREGORYKERR5 жыл бұрын

    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

  • @musicvenom3816
    @musicvenom38163 жыл бұрын

    great!

  • @noahmwamlima3237
    @noahmwamlima3237 Жыл бұрын

    I understand it's function,what is about working principle of IGBT

  • @pusatberk4193
    @pusatberk41935 жыл бұрын

    thank you clever girl

  • @someshvijay7607
    @someshvijay76072 жыл бұрын

    VGS battery terminal symbol (VGS) is not correct for the depletion MOSFET for the forward bias. Overall video is good, thank you!

  • @mubasheer5584
    @mubasheer55845 жыл бұрын

    Aww you're so sweet teacher love it 😀

  • @scribzfortheworld
    @scribzfortheworld Жыл бұрын

    It so usefull

  • @orlando_kawaii
    @orlando_kawaii2 жыл бұрын

    You're awesomee

  • @n7s134
    @n7s1342 жыл бұрын

    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

  • @user-ny4rd7il6f
    @user-ny4rd7il6f4 ай бұрын

    Is p for + OR -, in all transistor

  • @gilian2587
    @gilian25872 жыл бұрын

    Cool... time to buy a handful of JFETs... I know that I'll pop a few by accident.

  • @HR-fl8jr
    @HR-fl8jr3 жыл бұрын

    Love you

  • @ashokkumars9052
    @ashokkumars90524 жыл бұрын

    how to find SMD capacitaor value

  • @davetriplett8109
    @davetriplett81095 жыл бұрын

    Now Im less confused😎

  • @oudomchem5133
    @oudomchem51333 жыл бұрын

    You get my thumber... kept going on

  • @EaseJoy44
    @EaseJoy443 жыл бұрын

    love you zelda shirt

  • @aerohk
    @aerohk3 жыл бұрын

    Failed an interview at dream company because I didn't know what's JFET.

  • @sivanathan6891
    @sivanathan68915 жыл бұрын

    Sister please slow down I'm confused. you explained great but I'm a dul student

  • @jasonfoster5560
    @jasonfoster55605 жыл бұрын

    I don't get it. Back to trying to fit a circle block into a square hole

  • @amtpdb1
    @amtpdb15 жыл бұрын

    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)!

  • @gregorykusiak5424

    @gregorykusiak5424

    5 жыл бұрын

    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

    @Cyberplayer5

    4 жыл бұрын

    You can slow down the video and pause to look at the picture and rewind. There is no quiz at the end.

  • @3maisons

    @3maisons

    3 жыл бұрын

    @@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"

  • @ampedupelectronics
    @ampedupelectronics Жыл бұрын

    It is much easier to learn when your being taught by a cute teacher. All my professors were old men.

  • @amarm4944
    @amarm49445 жыл бұрын

    Sound level is low compare to previous Video "how trns work".

  • @Cyberplayer5
    @Cyberplayer54 жыл бұрын

    Something you may not know is JFETs behave a lot like vacuum tubes.

  • @graemesimms4104
    @graemesimms41045 жыл бұрын

    Some practical examples of what they can do would be helpful.

  • @status3004
    @status30042 жыл бұрын

    my lovly carins

  • @vahagnmelikyan2906
    @vahagnmelikyan29062 жыл бұрын

    She an work in an auction as the best fast talker.

  • @21thTek
    @21thTek Жыл бұрын

    best video on fets on youtube, the others are too theoterical , lack content, amateurs or nothing didactic. ⭐⭐⭐⭐⭐

  • @phasorsystems6873
    @phasorsystems68733 жыл бұрын

    Hey could you try this software? scan circuit solver on the playstore!

  • @o.mallick5540
    @o.mallick5540Ай бұрын

    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

  • @soterioncoil2163
    @soterioncoil21634 жыл бұрын

    Aw shucks, I was hoping to learn more about my cat.

  • @Gene1954
    @Gene19542 жыл бұрын

    I find it very disconcerting that you use + to - current flow

  • @thorbennielsen3845
    @thorbennielsen38455 жыл бұрын

    Too fast, slow down. Please

  • @reasonablebeing5392

    @reasonablebeing5392

    5 жыл бұрын

    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).

  • @adaramolageorge5725
    @adaramolageorge57253 жыл бұрын

    Veritas engr student gather here 😂

  • @Otakunopodcast
    @Otakunopodcast5 жыл бұрын

    "There are two basic types of FETs." Wrong. You forgot about the most important (and most awesome) type of FET. The BOBA FET. ;-)

  • @tetsujin_144

    @tetsujin_144

    5 жыл бұрын

    Its backpack's got jets!

  • @AINews13

    @AINews13

    5 жыл бұрын

    DAMN! I was just gonna say that! Hungry? Make a boba bread with melted fetta cheese.

  • @mohamedisma3ili355

    @mohamedisma3ili355

    4 жыл бұрын

    تتعجبني الحرك ديالك جميل جدا

  • @sania7254
    @sania72543 жыл бұрын

    ...my professor took 4 hours to explain this AND IT STILL DIDNT MAKE SENSE!

  • @bashirh1687
    @bashirh16873 жыл бұрын

    please go slowly..u had that hussain bolt shoes

  • @hosoiarchives4858
    @hosoiarchives48585 ай бұрын

    I didn’t understand any of this

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