What is a MOSFET? How MOSFETs Work? (MOSFET Tutorial)

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Hi guys! In this video, I will explain the basic structure and working principle of MOSFETs used in switching, boosting or power balancing tasks in DC-DC converter circuits, motor driver circuits and many more power electronics circuits. MOSFETs are the most widely used field-effect transistors that operate with voltage control.
We can examine FETs in two groups as you can see here. We had a lesson in which I explained JFET before. I will explain the MOSFET in this trouble. The abbreviation of MOSFET comes from the initials of the Metal Oxide Semiconductor Field Effect Transistor words.
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#mosfet #transistor

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1 июл 2024

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Комментарии : 398

@hotchihuahua1546 6 месяцев назад

The amount of knowledge we can get from these videos is enormous . I am 72 and still learning things . I may never use this knowledge but for the young people out there this videos can open up job opportunities or prepare you in the field of electronics . Even if you were not good in math !

@machdaddy6451 Год назад

Better tutorials than what I learned in school.

@eeapplications Год назад

Thank you so much 🙏🏼

@L3X369 Год назад

Perfect explanation! And The example Mosfet Driver Circuit at the end of the video, made me understand it's use cases even better. Thank you!

@Jonathantatrotattoos 9 месяцев назад

This is exactly what I needed to know, it really dumbs down the information about the function of a mosfet into digestable and useful information I can actually use thank you!!

@RaginKavu Год назад

You forgot about the even less known Boron-Oxide Barium Field Effect Transistor, or BOBaFET. It seems that there is even a whole book about it. Jokes aside, nice video!

@eeapplications Год назад

Thank you. Unfortunately, I didn't know much about this transistor.

@90FF1 4 месяца назад

Your explanation got my novice level head aligned on the MOSFET. Thank you.

@sanelb1147 9 месяцев назад

So wel explained with the picture of water valve, it makes it so much easier to picture and understand. Hopefully your other teachings are of same quality

@Ethio88503 7 месяцев назад

Thank you God bless you, the more you help to give, the given wisdom you shall receive abundantly !!!

@rael5469 Год назад

I just learned more about MOSFETs in 8 minutes then I did in two YEARS of AA degree classes.

@EgyptFishingVideos Год назад

Great background on MOSFETs. Thanks!

@eeapplications Год назад

Thank you so much 🙏🏼

@thisissoeasy 10 месяцев назад

Brilliant explanation! Thank you very much!

@josephraj4800 Год назад

Good Definitions about MOSFET with Related Animations are Stands Apart , Thank for Sharing and God Bless You Too .

@eeapplications Год назад

Thank you so much 😊

@saidfarid6382 7 месяцев назад

Hello dear professor Your lessons are really interesting and crucial, thank you so much for your help and advice,i do appreciate your job,i wish you peace and happiness under the sky of prosperity,all the best. Take care and have a good time.

@WJV9 Год назад

Some bipolar transistors can also transmit large currents at high voltages. Note that most inverter motor controllers use IGBT transistors which are a hybrid of MOSFET and BiPolar transistors.

@shashikantsingh6555 7 месяцев назад

This channel is indeed unique and different than others.. keep it up

@hareesh2377 8 месяцев назад

Thanks for the teaching

@user-mr3mf8lo7y Год назад

Thanks for the video.

@valuedhumanoid6574 Год назад

As a guitarist, the MOSFET distortion pedal is a very sought after tone. I have no clue why, but it gives the circuit a very unique flavor of clipping and is very popular in the blues/rock/classic metal genres. That's what brought me here.

@Poparad Год назад

From what I gather, it's the very fast switching rate that the MOSFET is capable of (which is one reason why it's commonly used in high-voltage power situations). Interesting that it's desirable for distortion since most tubes (12ax7, etc) are the opposite and have very sluggish responses. This is one of the reasons why the famed LM308 Opamp in Rats and Tube Screamers is supposedly so desirable.

@CalebePriester Год назад

I also started studying stuff like this because I play the guitar and wanted to build my own amps and pedals. I did build a distortion pedal with an LM386 and it sounded great. Sounded like a fuzz pedal. It was great.

@shivakumarperumal1821 2 года назад

I like your video and the way of coaching easily understandable.. Thanks🙏..

@eeapplications 2 года назад

I'm glad you like the videos. Thank you 😊

@reedyd Год назад

Educational, clear and concise. Thank you. 👍

@reedyd Год назад

Subscribed!

@eeapplications Год назад

Thank you so much ☺️🙏

@user-nh7ql2ez6v 7 месяцев назад

Thank you I have learned a lot

@Creativity_DIY Год назад

Thank you for explaning about MOSFET 👍🙏🇮🇩

@eeapplications Год назад

Thank you so much ☺️

@kamranalavi 3 месяца назад

Very clear explanation i did enjoy it .i understand hiw they work thanks I'm your subscriber now

@guilhermeferreirabr Год назад

Really nice explanation, kept it simple! Continue with the good work 👍

@eeapplications Год назад

Thank you so much ☺️🙏🏼

@alexjenner1108 Год назад

2:25 the electronic ignition in your car is highly likely to be using a BJT to fire the coil. In the GM HEI module it would be a MJ10012 or similar and would be conducting up to around 6 Amps. Almost every solid state audio amplifier from the 1960s to well into the 1980s was using bipolar transistors. High power mosfets became more popular later on. During the same period, bipolar power transistors were used in almost all mobile two-way radio equipment in the RF power transmitter stages, until power mosfet pricing and performance improved. There are plenty of high current bipolar transistors.

@FockewulfAz Год назад

What a good content! Thank you very much!

@eeapplications Год назад

I'm so glad it was useful. Thank you 🙏

@lsellclumanetsolarenergyll5071 5 месяцев назад

Excellent video, can you do a 2nd video by chance on how to measure a MOSFET to determ if it is BAD or OK ?

@Bari_Khan_CEng_CMarEng 7 месяцев назад

Good video, much appreciated

@eeapplications 7 месяцев назад

Thank you so much 😊

@beckma475 Год назад

Superb, very Helpful for my quick review. Subscribed

@eeapplications Год назад

Thank you so much ☺️🙏

@lankavillagehut 9 месяцев назад

Thank you very much ....sir 😊

@DrSanaullahkhan98 8 месяцев назад

Excellent, well explained ,very knowledgeable session, all the best and keep it up..

@eeapplications 8 месяцев назад

Thank you so much ☺️

@arjumandvillagecooking 9 месяцев назад

great video 👍 respect from Gilgit Baltistan❤😊

@eeapplications 8 месяцев назад

Thank you so much ☺️

@notmuch_23 Год назад

With a logic-level MOSFET, the circuit with the Arduino Uno would be just fine. however, with a power MOSFET (the kind that can control large currents), that would fry the microcontroller with the inrush current (gate forms a capacitor with the junction). In those cases, one needs to use a gate driver, which I think would be a good follow-up video subject. I've used MOSFETs to modify flywheel foam dart and ball blasters, since the motors I used have a 28 A stall current.

@tristanmcnabb2741 Год назад

Allsome work guys from cruzermans inventions 😁👍🎉🌟

@edgerrr Год назад

Don't let the direction of current flow bother you. Think of one direction as electron-flow and the other as hole-flow. Hole-flow is aka conventional-flow and a hole can be thought of as where the electron flowing in the opposite direction used to be.

@nunyabisnass1141 Год назад

Ive been trying to tell my wife that for years, but she still won't try it.

@camaroblackmatte 11 месяцев назад

thank you , very usefull !

@JeffMccollum-ry8cs Год назад

Nice Job! Thank you for posting it. This lesson is perfectly thought out and illustrated nicely. The AI voice is fine by me.

@eeapplications Год назад

Thank you so much ☺️

@xtdi2295 Год назад

Super materiał bracie!

@eeapplications Год назад

Thank you so much ☺️

@tmdrake 8 месяцев назад

Good stuff....was better when EE were specialists back then.

@warwar4876 Год назад

Thanks a lot for your sharing Sir.

@eeapplications Год назад

Thank you so much ☺️🙏🏼

@ServiceOrchestramegastore Год назад

Thanks. explained well.

@eeapplications Год назад

Thank you so much ☺️🙏🏼

@El_Chompo Год назад

Very well done.

@eeapplications Год назад

Thank you so much ☺️🙏

@georgemiller6930 Год назад

I LOVE THIS CHANNEL!! BY ORDER OF ME, GEORGE MILLER, DON'T EVER STOP MAKING VIDEOS 🙂

@eeapplications Год назад

Thank you so much 😅👍🏻

@FactsBeFacts Год назад

No-one cares what your name is bro

@aditputra90 6 месяцев назад

thanks

@salimsalim9678 Год назад

best video simple way explain 😉

@eeapplications Год назад

Thank you so much ☺️

@mitchelldynamix5405 Год назад

Great explanation

@eeapplications Год назад

Thank you so much ☺️

@_specialneeds Год назад

I have often used the IRFzed44N.

@mhammedaneb4635 Год назад

Thank you for this explication

@eeapplications Год назад

I'm so glad it was useful. Thank you 🙏

@xouenm Год назад

If there's JFET and MOSFET, what about BOBAFET? Kidding aside, I love your explanation between these two. Thank you.

@retawyalc153 5 месяцев назад

i like it.

@eeapplications Год назад

✔ All videos take a long time to make. If you want to buy our coffee to thank you, click the link below or the thanks button 🤗 Support with Patreon: www.patreon.com/eapplications Buy Me a Coffe: www.buymeacoffee.com/eeapplications

@satipsrl5207 Год назад

Using the pot to variable polarize the gate is same to control the speed of your car with a valve from fuel tank to the carb or injection pump .Did you heard pulse with modulation sometimes?

@waynegarfield6607 6 месяцев назад

It sounds like a mosfet is a like a bypass valve. Access to full power ( source ) but if only a partial speed is wanted it sends the unwanted current to drain thereby bypassing the unwanted voltage / current to a different loop and circulating it not wasting in in heat like a potentiometer.

@Bianchi77 Год назад

Nice info, thanks :)

@eeapplications Год назад

Thank you so much ☺️🙏

@tunkunrunk Год назад

afters weeks of searching for a video that easily explains mosfets , I came across your video . Thanks a lot !! but can you make a video about mosfets with more than 3 pins , especially 8 pins mosfets ?

@eeapplications Год назад

Hi. I am so glad you liked the video ☺️ I will try to do research and make a video.

@slartythecyclops4643 6 месяцев назад

Still nfi on my quest 2 build a deathstar, cheers anyhoo :-)

@augustusmbiti3854 Год назад

This is we ll explained and understandable

@eeapplications Год назад

Thank you so much 😊

@jothisivagurunathan1306 9 месяцев назад

thanks. i liked this video

@eeapplications 8 месяцев назад

Thank you so much ☺️

@leanne5751 6 месяцев назад

Great video, thanks.

@user-zo5vq1jm3z 6 месяцев назад

P channel arrow going in n channel arrow going out. Thank you I have learned a lot.

@MonoChorMe 6 месяцев назад

Here's an easy way to memorize: NPN = "Never Points iN" ( ⬅⭕) PNP = "Points iN Proudly" ( ➡⭕)

@sangtaobuzz 3 месяца назад

Tuyệt quá, bấm đăng ký kênh luôn rồi bạn.

@thelightings 11 месяцев назад

thank you alot

@yogaforsuccess Год назад

Thank you

@bedaiie1622 6 месяцев назад

Hello, what studies are required to master the operation of this electrical board with its components?

@yaad2226 Год назад

wow bro u explained it so simple make more video make video on how to use it in circuit

@eeapplications Год назад

Thank you so much 😊 I try to produce as much content as I can 🤙

@Hagar76a Год назад

I'd like to see some vids on reverse polarity and short protection. Also latching.

@snakezdewiggle6084 Год назад

This is how a MOSFET works, Not how to build a spce craft... Don't just buy the book, read the words... ;)

@CalebePriester Год назад

This is fing cool!

@eeapplications Год назад

😅 Thanks 🙏

@johnaugsburger6192 Год назад

Thanks

@myintnaing2470 Год назад

Sir. Think. for. a. nice. explaination

@eeapplications Год назад

Thank you so much 😊🙏

@zakariahforbes1559 6 месяцев назад

Wouldn't it be better to have a diode on the output of the uController to prevent reverse current?

@rico5870 Год назад

Nice video!! Subscribed!

@eeapplications Год назад

Thank you so much ☺️

@conmcgrath7174 Год назад

I couldn't agree more, simple and practical knowledge. Add another sub for sure. Edit; It's really annoying me that I can't remember the term for power control using this method.....oh, hang on, the lazy little hamster that powers my brain just had a run on the wheel, Pulse Width Modulation, I feel so very much better now! Pax.

@jbflores01 Год назад

excellent tutorials! very informative and easy to follow and understand! thanks!

@eeapplications Год назад

Thank you very much ☺️🙏

@suntexi Год назад

One thing that was drummed into me, working with them, was how fragile MOSFETs are in relation to high voltage. This why, when handling them, you should wear an earthing strap to short out static which may be many thousands of volts; no power or danger to humans but deadly to these devices and their packaging is conductive carbon foam.

@ELECTRICMOTOCROSSMACHINE Год назад

So good.

@eeapplications Год назад

Thank you so much 😊🙏

@DeadBryan 8 месяцев назад

Great mosfet introduction

@eeapplications 8 месяцев назад

Thank you so much ☺️

@johnstonewall917 Год назад

2N3055s have 15A continuous and Vceo of 60 volts. First used well over 50 years ago

@bunkie2100 Год назад

I was going to mention this. Back when I was building power amplifiers in the late 1970s I had a large range of both NPN and PNP BJT transistors from which to choose with collector current ratings over 15 amps.

@alexjenner1108 Год назад

@@bunkie2100 I was working on VHF and UHF mobile network transmitters in the 1980s, no mosfets there either.

@kayodeniyi2862 11 месяцев назад

Thanks.

@lawrencetate145 Год назад

I'd like to see a simple bare-bones MOSFET configuration like this for audio. There are 10s of thousands of "audio amplifier" designs, but I'm curious about the absolute minimum to pass an audio signal by MOSFET. If there is already such a video, my apologies for not looking first. :-)

@8abbas 9 месяцев назад

Nice

@niwamanyakenneth9225 Год назад

So good

@eeapplications Год назад

Thank you so much 🙏🏼

@YouTubedigitalcreator69 Год назад

What a great technology ❣️❣️❣️❣️ your so smart

@eeapplications Год назад

Thank you so much.

@oldtimer2192 Год назад

You’re

@sarowerhossain3033 Год назад

THANKS

@electronic-repairs Год назад

In the last schematic of the DC MOTOR controller DRIVER module. If driving LEDS the schematic is correct. But if used as a motor controller there should be a Shottkey Diode over the motor to prevent spikes from the coil blowing up mosfet. ??

@peterduxbury927 Год назад

Yes, I agree that a diode (as substituted for the resistor) would be better at controlling the back-EMF as developed by the Motor - when the Motor is turned-off

@tacka73 Год назад

Electrons flow from the negative to the positive round a DC circuit

@jamesslick4790 Год назад

Absolutely true, but to this day, diagrams are STILL made using "conventional flow"🤔. I don't know why this tradition persists. 🤷‍♂️

@Toxxxic_ Год назад

@@jamesslick4790 too much literture too change so easier and less confusing to keep using conventional

@Dorfapoligetik Год назад

They don't change it because they will not that to many people think about it. when you think deeper about the true direction of the flow, that will show that everything they teach about electron movement is false and in reality they know nothing about they have only theories! about how electricity works.

@Drozerix Год назад

@@Toxxxic_ Just have a program change the literature. Going forward it doesn't make sense -- to me -- to keep the traditional concept of current flow when electron flow makes more sense.

@josepherhardt164 Год назад

Baba Mosfet. Wasn't he a bounty hunter in Star Wars?

@RockDog101 Год назад

I'm not an electrician or an engineer (that will probably become obvious in a moment) but it sounds to me like they got the drain and source mixed up. In the faucet analogy, why wouldn't the pipe leading into the spigot be the source? Is that not where the water flow is coming from?

@laysleal13 Год назад

You're right, they mixed up

@RobDuarte Год назад

@@laysleal13 It's not mixed up. This is called "conventional current". See the comment below about Ben Franklin.

@prattacaster Год назад

People it's not right or wrong, you can connect a p channel MOSFET source to a positive voltage and have the drain on negative, so then which way is current flowing? Well, drain to source right? So without more context to the application you can't say whether it's wrong or right. It's just a rough visual of how the device generally works, don't try to hook your FET up to the water spigot.

@Talltrees1235 Год назад

You are right about the water tap.

@JoseLopez-xu8ue 9 месяцев назад

Power green wire use poline and pour oil and pound blue silver to light medal that heals near over and wait about three weeks

@muhammadrafiqulislamkhan6994 Год назад

You are super explainer. I hope you make more videos for us better understand. Thank you.

@eeapplications Год назад

Thank you very much ☺️ I will always try to make new videos 🙏🏼

@b43xoit Год назад

What semiconductors are used for higher-power applications, e. g. electric vehicles and hybrids, locomotives, and DC power transmission between AC grids?

@endurofan9854 Год назад

now this is an interesting query 😁 hope someone answers

@Alacritous Год назад

IGBT are used for higher power applications.

@hansrajbissessar9098 Год назад

Well explained 👏 👌 👍.

@eeapplications Год назад

Thank you so much ☺️🙏🏼

@mach1553 Год назад

5:15 "If we talk about this circuit, since there's no damage to the potentiometer, this circuit will work smoothly even if there's no resistor." First the resistor is there to protect the MOSFET - Now it's ok to run w/o it since the potentiometer's still good.🤔

@jakejoyride Год назад

Yeah it seems teacher had no idea what he is talking about

@IMelkor42 Год назад

I still don't understand why a resistor needs to be there.

@juancarlossaavedra6757 5 месяцев назад

There is a mistake @5:44 . The electron charge is NEGATIVE so the current must flow the other way around as shown.

@henryj.8528 3 месяца назад

Because Ben Franklin thought electricity flowed from positive to negative, early electrical diagrams showed the flow from positive to negative. Later of course they figured out it was negative to positive. But in circuit diagrams, usually the "conventional" current is still shown flowing from positive to negative. It's the convention. And it's confusing. But it's the norm in electrical engineering.

@KenTeel 3 месяца назад

Well said.

@willbohland3698 Год назад

You can find the whole acronym MOSFET in the mosfet symbol. That's crazy.

@ahndeux Год назад

6:00 That circuit would blow the MOSFET easily if it doesn't have protection against back EMF from the motors. Anytime the motor is shut off, the collapse of the magnetic fields generate a current in the reverse direction. Typically, you need to add a diode from drain to source wired in reverse to prevent the the MOSFET from blowing. The only time you don't need it is when the MOSFET has internal protection. Some MOSFET circuits that requires an external PWM signal to switch the MOSFET include optoisolators to prevent damage to the MOSFET. Who knows what type of signal people may use as an input. By putting in optoisolators, you decouple the two circuits and prevent external signals from damaging the FET. Its another layer of protection that is used in robust designs. Its common for MOSFETs to blow if its not designed properly. Its almost job security as soon as I look at some of the schematics.

@eeapplications Год назад

Thank you for the additional information.

@d614gakadoug9 8 месяцев назад

All power MOSFETs have in inverse diode between drain and source. It is there because of the way FETs are fabricated. In the early days of FETs they were just sort of there. Now they are generally carefully characterized and can be used to advantage. The current in an inductor does not change direction when the field collapses. The polarity of the voltage changes but the direction of current flow stays the same. An inverse diode across the FET doesn't cope with that, however the internal body diode behaves similar to a zener and _may_ be able to handle the current.

@zymagoras Год назад

You need logic level MOSFET to control circuit using Arduino. Most MOSFETS 10v or more at the gate.

@skywatchman8326 8 месяцев назад

good books on Electronic circuit design recommendation. Thanks for video.

@gpetheri Год назад

So when you turn on a tap, water flows from the drain to the source of the water?? That's where I switched off....

@prestonbecker8784 Год назад

In an N-type MOSFET, electrons flow internally from the source to the drain, but conventional current flows opposite, from the drain to the source. So, if we choose to have water flowing in the direction of conventional current (as opposed to having it represent the flow of electrons) then that diagram would be correct, with water flowing from drain to source. It may be confusing, but that is the fault of 1980's electrical engineers, not the channel author.

@ChadDoebelin Год назад

@@prestonbecker8784 the channel author should have used an Pchannel then, or used a diagram that was different, this is absolutely the choice of the channel author. This choice made it confusing for their viewers. Not the "1980's electrical engineers" you are attempting to misdirect the problem at.

@aries6776 Год назад

That's because there are two types of MOSFET, a P channel would go like you think from Source to Drain, a N channel (far more common) goes from Drain to Source. I agree not the best analogy.

@briankudalis9572 23 дня назад

Electricity works on draw from source. The source is the electric motor or whatever is drawing current.

@Afrocanuk Год назад

@ 4:39, it will be interesting to see how that 10KΩ resistor was calculated.

@whawaii Год назад

I'd say it's because the potentiometer is a 10KΩ. In effect this creates a total variable resistance of 20KΩ that has a physical limit set at 50%. Using the principles of a voltage divider, the voltage at the slider would vary between 4.5V to 9V when measured in reference to ground (which is the negative). And most likely to prevent a high current or short situation between the DRAIN and the GATE.

@TheDon0715 10 месяцев назад

I think you flipped sourced and drain for the fauset explaination.... I could be wrong, but idk, it just confused me lmao

@ulinder 9 месяцев назад

Yes, the fact that P & N mosfet actually have different directions makes the faucet analogy even more strange. Since in one of them, water would stream in reverse anyways.

@paulrudman1349 9 месяцев назад

The problem is that it's conventional to draw circuits with the 'ground' as a common rail connected to -ve, with the'electricity' entering from the +ve, going through the components, and 'back' to -ve. So N-channel FETs have the 'electricity' going from drain (+) to source (-). This is because, when electricity was first discovered, it was believed to flow from + to -, and the convention stuck. BUT, electricity is actually a flow of negatively charged electrons from -ve to +ve. So the tap analogy must be referring to the concept of 'electricity' rather than what actually happens.