This CHIP Changed the WORLD! (ElectroBOOM101 - 012)

[@infernalsorcery7923]

I love how this is formatted with common beginner mistakes, and then mehdi explains his mistake in detail as though hes trying to teach himself the logic behind it.

[@davecrupel2817]

Teaching by example! Best kind!

[@AliAbbas-es1iy]

And we all love this..

[@donforgie303]

and don't forget, we learned "On" and "Onner" 😂 Thanks Mehdi !

[@andremarins4454]

Dammit Mehdi! I'm am a eletronics technician in high school, then tryied Eletronics enginnering at university for almost 3 years, then tired changed to manufacturing engineer, because I was frustrated, the fun, the curiosity, the applicability, the thingfor me in eletronics turned to only the most difficult and confused calcullus, managed by ruthless fearmongering teachers, I follow you and watch you because I love eletronics and computer, I wish I had a teacher like you, I would might today, still being Shocked (hahahah) in this world!! Thanks for the awesomness!!! (by the way I'll never forget my scariest eletric shock, I've touched a tube tv (cathode?) whatever charged pole it was, and for a moment it felt I lost control of an arm, still loved it) From heart Thanks Mehdi. Cheers from Brazil!

[@jamessnyder3807]

TV tubes (and similar devices) scare me not sure if I could bring myself to even work on one. On the other hand I’ve become surprisingly comfortable with fixing live 120V circuits. Is it painful/uncomfortable, yeah. Is it annoying figuring out which stupid breaker corresponds with terribly labeled circuits, also yeah. Plus at the northern latitude I’m at things get dark early and it’s much nicer leaving the nearby lights on so you can see what you’re doing. Is this kind of a bad idea, also yeah. So far no popped breakers or bigger failures :-)

[@jakepaintin7215]

Spoken like a true engineer 🤣

[@JaSon-wc4pn]

Tryied ???

[@KlabauterManiac]

Why is my favorite vacation channel talking about this electrical stuff?

[@BrianHurry]

I agree. I have no need for this knowledge I'm learning but I watch every video.

[@miinyoo]

It's the eyebrow. Damn hypnotic face worm.

[@IPagma-n7f]

he makes alot of electrical videos 💀

[@m0ment219]

Tbh I can't tell if this is sarcasm 😅

[@Fosho-c6j]

@@m0ment219 how lol

[@adamrichardson2227]

I used a MOSFET on my dimmer circuit controlled by the PWM pins on an Arduino board. I then used buttons for lowering and raising the PWM signal to the MOSFET. It works really well. I use it every day for the LEDs under my monitors on my work desk so I can lower the brightness after I am done working and I want to watch something. MOSFETs are really awesome! This is an amazing video! Thanks for the in depth explanation Mehdi! When I did it, I just crawled through a bunch of forums and fiddled with it until I got it how I wanted. I didn't really know much about how it works.

[@ragtop63]

I remember learning this when I was around 8 years old. My dad was an electrical engineer and I asked him if there was a way to power a car stereo from an AC source. Instead of going to the store to buy a prebuilt AC-DC converter, we went to the store and bought all the parts to build one. He then took me through a week-long crash course on what each component does and how to read electrical schematics, then told me to go ahead and build it and he’d check in on me every once in a while. Ultimately I built a converter that provided 12.5VDC @ 1.5A (max). It was the size of a loaf of bread (this was in the early 1980s) but it did what it was designed to do.

[@imfloridano5448]

You are fortunate to have a parent who saw potential in their child and gave you a headstart in your later year's

[@bukwok]

good for you, one night my dad said go out to buy a pack of cigarette , since then i never see him again, yup 40 years , i guess cigarette grown from tree right??so he probably plant a cigarette tree .

[@jeremykemp3782]

Show off

[@mattforbes221]

And then everyone applauded

[@maj429]

That's awesome.

[@theredstormer8078]

This is a way better explanation of how transistors and fets work than any other I've seen. Glad I can finally understand these things.

[@FLORIDIANMILLIONAIRE]

Well you have to build something and make it work otherwise just understanding how it works is not going to be sufficient.

[@theredstormer8078]

@FLORIDIANMILLIONAIRE I've used them for binary logic before, but I didn't fully understand how they did what they did. This video bridged that gap.

[@Unfinished80]

This was the most entertaining explanation of MOSFETs I've ever seen. You almost made me spit take coffee on my keyboard. Thanks for another fun video!

[@TheJohnDorn]

I knew exactly now mosfets worked and this was still wildly entertaining (and taught me a thing I hadn't thought about)

[@alexb.1382]

Also one of the best I have seen. It even explains the symbol of a mosfet

[@patrykmarkowski5389]

Hi Electroboom, I believe that you have the width and length of a MOSFET backwards when you discuss its R_DSon value. Channel length is defined as the distance between the drain and source terminals of the MOSFET so in your diagram at <a href="#" class="seekto" data-time="480">8:00</a> length should be horizontal. Channel width on the other hand is the vertical dimension. Increasing the width decreases R_DSon because you are effectively adding more channel in parallel for charge carriers to flow. Increasing channel length actually has the opposite effect and will increase R_DSon.

[@ayeeff4414]

Agree. I was instantly triggered by that explanation of increasing the length of the channel to reduce the resistance. Seems also to be somehow mixed-up with "channel thickness" which , btw., is not constant between D and S (but that info is not required on this level of detail). So, usually the width is increased to reduce R_DSon as the length is already at its design minimum.

[@theondono]

He is just defining the channel measurements differently. I’ve found both definitions in both literature before, so I’m not sure there’s a universal convention here (though one might be more popular in certain fields).

[@TorbjrnViemNess]

Came here to say this. At least he increased the correct dimension to reduce the on-resistance, even though the name was "wrong" (according to how I learned it in school at least) :)

[@laszloperneky8417]

The return of the fuuull bridge rectifier!

[@gazhos]

You mean FULL BRIDGE RECTIFIER!!! ?

[@김한솔-y7c]

FULL BRIDGE RECTIFIA

[@alsen99]

FOOOLLL BREEEDGEEE RECTIFIERRR

[@anthony-zl5vp]

It's not rectifiah?

[@BattlestarCanada]

Full bridge Rectumfryer😂😂

[@tamarkan]

<a href="#" class="seekto" data-time="350">5:50</a> The arrows on the FET symbols (actually on BJTs also) show the direction of the p-n junction. For the NMOS, substrate is P and channel is N. So the arrow points to the gate, since that's where the channel forms. For PMOS, substrate is N, so arrow points to the substrate.

[@MrVeNoMaX]

P-ness had me losing it, I couldn't stop laughing! 🤣🤣

[@Konstantin_.]

npc

[@Obsidi4n-oy1wc]

Lol true

[@Obsidi4n-oy1wc]

He even beeped it

[@boobtronic9000]

Bot

[@MatBaconMC]

Are you 13?

[@АртёмВорохобин]

I’m an experienced electronic engineer, but this educational video taught me two new things about MOSFETs that I didn’t previously know

[@heisenbergstayouttamyterri1508]

I AM SOOOOO HAPPY THAT THE 101 SERIES IS BACK!!! This and Rectifier are the best of Electroboom! Keep it up, dude! ♥

[@BooBar2521]

Love them too

[@DadofScience]

There will never be too many intro videos on fundamental concepts. Everyone learns in different ways, so having many teachers doing it differently can make a world of difference to the student.

[@smob0]

If you're using a microcontroller, you can use an opto coupler to protect it from the pness of the mosfet. Always use protection on your microcontrollers.

[@AstrosElectronicsLab]

lol

[@raphanunu6912]

@@AstrosElectronicsLab This is true and not funny, to me at least.

[@Oaisus]

in two minutes Mehdi has taught me more about the structure of a FET than my mosfet amplifier course ever did. I finally understand how the hell they work.

[@geuzeg]

Yep, my thoughts exactly

[@RyanAumiller]

for as funny as it was, it was also dead-on right down to how electrons both engorging and draining are the main factors changing the amount of p-ness there is in the junction.

[@AshrZ]

The best form of lecture content is to give a super simple explanation of how it works (aka like Mehdi's videos), then explain each component in detail. Most professors/teachers seem to forget the first half

[@FirstLast-vr7es]

@@AshrZ Absolutely correct. Whenever I try to learn about something technical, they immediately bury me with formulas and highly specific info. My brain just overloads and turns off. I need to see context to understand why and where math is needed.

[@IreBrezOvire]

Exactly! Same here.

[@professorxgaming2070]

This was super easy to understand. And very entertaining as well. You would be an awesome professor

[@vitormoreno1244]

When I was in electronic technician course(2002) the teacher didn't explain it at all, just mentioned it, although I had used them a lot, I never fully understand how they work. Thank you very much.

[@ifiig8220]

Hey man thanks for the content. Currently at dominion in the nuclear control room operations training program and your hilarious content has actually been very helpful in my electrical science training. The areas my instructing doesnt quite make super clear you have a very humerous and engaging way of clearing those gaps for me. Thank you

[@AryanKumar-jo1pz]

<a href="#" class="seekto" data-time="197">3:17</a> LMAO 😭😭 This was the most unexpected sht ever cant believe I laughed so hard at this

[@Stelios.Posantzis]

Excellent video. I think this is the first time I've come across a detailed explanation that gets me all warmed up about learning about mosfets. I think the main disaster with learning about mosfets, as far as I am concerned, are the symbols they use for them. In bjts, the symbol provides some indication about current direction but with mosfets (all their varieties) it is always counter-intuitive. The video certainly helps with that aspect but the more important achievement in my opinion is that it packs quite a lot of detail but it manages to circumvent all the technical, mathematical elements by presenting everything using pictures and animations that build a very badly needed intuition when it comes to learning the fundamentals of mosfet operation. For a beginner, mosfets may appear easier to understand using the traditional semi-mathematical approach but for someone like me who can never remember which way the arrows go and which orientation the symbols have (with regards to source vs. drain) a good, solid grasp of the basic behaviour trumps everything else.

[@arshia.sasson]

<a href="#" class="seekto" data-time="367">6:07</a> I have been summoned by a fellow persian electrical engineer. The arrows on the new symbols show the diode that is formed between the bulk and channel/source. NMOS has heavily n-type regions on a slightly p-type wafer, and PMOS has heavily p-type regions on a slightly n-type wafer. This is not important for discrete transistors on PCB's, but critical in semiconductor manufacturing where both types of devices are on the same wafer and has the possibility to interfere with each other without some clever workarounds

[@13pgt]

Oh my thoughts were correct then! As an IC designer, I never experienced using MOSFETS with the updated symbol. It's always either the 3-terminal symbol or the 4-terminal symbol where the bulk/substrate can be tied anywhere else other than the source. But maybe because I was only in the industry for 2 years as of now (and ~4 years from academe)

[@Elberto71]

I was thinking, because electrons travel from negative to positive, but I've been drinking 😂

[@foogod4237]

It is technically true that the schematic arrows correspond to the orientation of one of the diode junctions, but I'm pretty sure that's not actually what they're representing (nor do they actually have anything to do with the physical construction of the device). The arrows represent the *direction of electron flow* required to form the channel (and turn on the MOSFET). Since electrons have negative charge, this of course, counterintuitively, means the arrow goes in the opposite direction to what we normally think of as "current flow" (from positive to negative). Basically, if the tip of the arrow is positive relative to the other end, the MOSFET will be on (so you can think of it as "the arrow points to positive", as a convenient mnemonic).

[@nobody7817]

The HECK It is NOT important on Discreet transistors on PCBs. Hook the wrong one up and see how fast YOU become BOOM BOOM PERSIAN BOOM!

[@foogod4237]

@@nobody7817 Please try to actually read what you're responding to before making dumb comments. They said that *the type of wafer it is made from* does not matter for discrete components (and they are right, you can make either type of transistor from either type of wafer and it will function the same, if you are just making a discrete transistor). They said nothing at all about "hooking up" the wrong type of transistor for a particular application.

[@cmasupra]

This is legitimately a very good tutorial on MOSFETs! Funny and step-by-step informative! I am going to think of the arrows as pointing to where the positive voltage should be to turn on the gate, whether they are or not. The p-channel MOSFET's body diode at <a href="#" class="seekto" data-time="561">9:21</a> makes it look like the transistor's existence is unnecessary because of the diode's existence. As long as Vds>0, current will flow on the right through the diode. I guess that's why some people go even 1 more step further and put a circle around the entire transistor & body diode.

[@rhouser1280]

<a href="#" class="seekto" data-time="34">0:34</a> the speed switch cracked me up! 😂

[@azhankhan9218]

Awesome explanation!! Just a quick question Mehdi at <a href="#" class="seekto" data-time="489">8:09</a> you said that increasing the length of channel will decrease the resistance but in high school we studied resistance is directly proportional to the length of the conducting path...

[@azhankhan9218]

​@@BromideBride Can you please elaborate.

[@wiseoldfool]

@@azhankhan9218 The extra "length" is in parallel with the initial channel. Does this help? Maybe the channel becomes wider rather than longer.

[@CMTEQ]

@<a href="#" class="seekto" data-time="227">3:47</a> P is like fill all my holes with Electrons 🤣😂. Great educational content as always.

[@KarldorisLambley]

i have been desperately waiting for this vid. Mehdi told me he was working on it months ago. it was as informative as i could have wished.

[@seldonplanB-24]

"It can't imagine a Middle Eastern guy with no beard" had me rolling 😂 That totally sums up AI at this stage. It also can't imagine blond women without a pair of HUGE...erm....nose 😅

[@DUKE_of_RAMBLE]

A *_pair_* of *_noses?!_* 🤨😋 The logical, and meta, thing to have said would've been EYES! Because not only do they (typically!) also come in a pair, but the common comment one might hear is: _"Hey... my eyes are up here! ✌️"_

[@themightybuzzard3088]

To be fair, I have the same problem. I'm willing to keep trying though.

[@realastropulse]

Part of the issue is that AI doesn't understand conditionals, so saying "no beard" means its seeing "beard" in the prompt and adding a beard because its in the prompt so you want it obviously. The real thing to do would be say something like "clean shaven".

[@adeptfelix]

@@realastropulse Nailed it. The lack of the ability to utilize logic is the biggest shortcoming of current AI. I don't even like calling it AI as, to me, Intelligent would include the ability to reason. We have what I like to call Artificial Statistically Significant Production Entity Networks or ASSPEN for short.

[@talideon]

​@@realastropulseI think you mean "negation" that's what they don't understand. Or rather, a negator is a weak signal.

[@XaFFaX]

<a href="#" class="seekto" data-time="139">2:19</a> "Some electrons move from N to pee."

[@michaelamuchyova]

😂

[@clipblocks]

<a href="#" class="seekto" data-time="18">0:18</a> bro casually dissed Nelson Pass's whole career

[@MassimoRicciardi-y6k]

Yep lol.

[@blahorgaslisk7763]

way back, or at least in the 80's I worked at a company selling mosfet based amplification modules. It was interesting to read the specs, as these small and pretty cheap modules produced up to 150W and the data was very clean and impressive. So at least on paper they had better data than what the huge audio amplifier manufacturers were selling. Thing was, I was told by the man designing them, that audiophiles didn't like perfectly clear amplification. They wanted and payed for "soft" sounding amplifiers that cut the high end making the sound more pleasurable to hear rather than clinically perfect amplifiers that retained all the fragments of the recorded sound. As an example he pointed to the tube based amplifiers and the way they colored the sound significantly. And yet audiophiles were claiming they sounded much better than any other magnifier. Later I found that at least some of the big names in the business had separate lines of magnifiers for the US, Europe and some other parts of the world. These had a sound characteristics that matched the markets and what most Europeans liked differed from what was best selling in the US. So "perfect" amplifiers, if they were actually possible, would not have the sound most people would want. But it goes further because the amplifiers, microphones and recoding techniques are not perfect on the recording side either. So the signal that you stereos amplifiers have to work with is already far from perfect. Add to that the speakers that also are far less than perfect. All in all use whatever amplifier and speakers you find you like. Perfection in signal amplification isn't really all that important. That you like what you hear is.

[@raphanunu6912]

I bought one of the first Sony MosFet amplifier in 76, it still works fine ! I only replaced the PSU capacitors.

[@sangamxghimire]

I have my Electronics Circuits Exam Tomorrow and 12 Marks comes from MOSFET. Thank you very much. Love from Nepal.

[@902Boots]

Excellent video on mosfets! Best explanation I've ever seen on KZbin

[@BrianHurry]

He just said fill all my holes.... Stop it I'm done. I laughed too hard😂

[@nayhem]

So one type has holes but also p-ness. Semiconductors be wildin'.

[@mgjk]

dude, don't be gross, he's pretending to be a mosfet and explaining how he gets turned... never mind.

[@Gruemoth]

Hahahaha

[@priyanshusharma1812]

I'm a student in electronics and communications engineering, my whole semester so far Ive been studying mosfets as a weird circuit symbol that I have to calculate many parameters for without knowing what its for. Thank you so much for making it so interesting to know about it while in my university class all I can do is dread learning about this in Analog electronics. Now I finally understand what channel length and width actually mean with your examples and other terms too❤

[@samuellahti3612]

I’m a PhD student in analog IC design, sounds like avoiding analog uses of MOSFETs was probably the right idea 😂

[@ElectroBOOM]

Hey if you are doing analog IC design, there is no avoiding analog MOSFET design! You do so we don't have to make it out of discrete components!!

[@davidconner-shover51]

you can, but power dissipation would go through the roof, better to stick with BJTs for low power analog, Hfe and current base to emitter is definitely easier to control than Gate to Drain voltage alone.

[@foogod4237]

There's nothing wrong with using MOSFETs for low-power analog applications. They can actually be really convenient in some situations, because they can change very quickly (allowing for very high frequencies), can have almost zero DS threshold (so do not require heavy biasing), and basically act like variable resistors in a circuit (which can be useful in some types of analog circuits)... For a lot of analog stuff, JFETs are actually more common, though (they behave similarly to MOSFETs, but are constructed somewhat differently, and are normally on, so you need to apply a voltage to turn them off instead).

[@gabrielmorel9200]

As a former microelectronic engineer intern working on a SMASH sigma-delta ADC, i feel like analog design is much more fun than designing a numerical filter. Designing a full differential OTA and seeing it working is like having a baby making the first steps

[@AlexandreLefaure]

Fun fact: you don't need to say you are an engineer/PhD/researcher/God before saying something.

[@aaronmdjones]

For 10 years I've been watching your videos Mehdi. TEN YEARS.... and you still manage to make me jump in the first couple of seconds.

[@NevadaMostWanted658]

"p-ness" got me falling on the floor 💀

[@paavangoyal]

followed by the filling of holes

[@miguelm203]

Back in the good days of internet, we use to say "ROFLMAO"

[@Lukasito19]

​@@paavangoyalThat's what she said

[@pavelperina7629]

with a pee channel

[@user-tv2ds2rk7w]

alright man, i'll watch all your videos. You're hilarious and a great teacher

[@LOLMAN9538]

<a href="#" class="seekto" data-time="2">0:02</a> that may be a new ElectroBOOM record for fastest messup

[@DD-uq8qg]

Maaan. You are seriously awesome. Your explanation is very intuitive and visual. Good job.

[@prabalkumarsamanta8333]

<a href="#" class="seekto" data-time="224">3:44</a> I can't stop laughing 😂😂😂😂

[@accuset]

This was great! I'm working on a project involving a switch and multiple circuits, some of them involve lights, but the switch is on the motor. In my design, i forgot to connect the switch to the lights. So now I'm using an acclerometer with a mosfet so that when the motor spins, that allows the lights to turn on, and they turn off when the motor isn't spinning. Both circuits have unique power sources.

[@MagiTycho]

His cringe when he goes to plug it in at <a href="#" class="seekto" data-time="513">8:33</a> hoping to not get jolted reminds me of the movie Down Periscope 🤣

[@kaitlyn__L]

(Matt Berry voice) Up periscope! Down periscope!

[@soundslike8454]

Your explanations are perfect for my brain. I also got an electronics kit as a kid and have been the family electronics guy since i was six. I took a different study and career path but I am still absolutely a hobbiest for life.

[@BonJoviBeatlesLedZep]

ELECTROBOOM 101 IS BACK???? YEAAHHH BAYBEEEE

[@sarahjrandomnumbers]

"Who uses it as an amplifier?" Right here, as well as LDMOS. 🤣🤣

[@EkiToji]

Yeah I really want to hear Mehdi talk about transconductance as well as poles and zeroes.

[@protonfox1669]

Came here to say that. Basically almost every RF power amplifiers nowadays use MOSFETs. Even if some amplifiers topologies use the MOSFET as a switch (class D or E, for instance), they are also widely used for more linear applications such as LNAs.

[@arpanmukherjee4625]

"Oh yeah, fill all my holes with electrons" - Moaning Mehdi Sadagdar (aka Electroboom) - Oct 2024

[@pleck7059]

<a href="#" class="seekto" data-time="380">6:20</a> the arrows show the direction of electron flow atleast it looks like it

[@Villena444]

derpy slugcat spotted

[@SubCodeX]

Perfect! I studied electronics at high school for two years and never got a hold on mosfets. This, however, was both fun and helpful! :)

[@raphanunu6912]

You must be at college to learn actual knowledge.

[@dfrontierit2114]

Greetings from Sri Lanka. This is best.YOur teach style is unique and effective.

[@309electronics5]

<a href="#" class="seekto" data-time="2">0:02</a> Bro made a lightbulb launcher 😂

[@SimKardBoi]

Best intro

[@cmuller1441]

<a href="#" class="seekto" data-time="585">9:45</a> instead of rectifying AC to power the device (it may not like that, for example of there's a transformer) you could place the mosfet inside the bridge so the whole circuit is still AC bu the MOSFET sees DC.

[@babilon6097]

<a href="#" class="seekto" data-time="525">8:45</a> you really honour that transistor :-D

[@muskelin]

Wow a member

[@muskelin]

Wait wut

[@MrBroberds]

She offered her honour / He honoured her offer / And all through the night / He was on her and off her

[@JimmyBiffle]

oh there a member i was actually questioning my eyes *7 hours?! nah it says 7 Minutes*

[@Syphronius]

Mehdi it would be soooo flippin' awesome if you would've done livestreams explaining different topics ❤

[@matthewcecil8552]

Medi, "it can't imagine a middle eastern man without a beard!" 😂 I feel for you. As a Japanese American I can't get AI to draw me without crazy anime hair.

[@Crazydude.]

😂

[@HenritheHorse]

Tubes and mosfets sound great!

[@Lukeee91]

Tubes and mosfets go brrr

[@johnskerlec9663]

Oh you are crazy. You need your own show on TV with full on VFX. Love your work Brother.

[@alazario1082]

"Fill all my holes with electrons" --Electro boom 2024

[@thesentientneuron6550]

This answered questions I didn't get answers to at my university's semiconductor diode. God bless ya, Mehdi!

[@pirobot668beta]

My High School (1974) electronics/physics teacher (not enough students in either course, so we combined!) had a real talent for explaining stuff. His lecture on PN junctions and the depletion zone sticks with me to this day! When I consider a diode, I 'see' a tiny capacitor in there.

[@paulmichaelfreedman8334]

Veritasium released a video on this principle in his minidocumentary about the development of the blue LED. It really is a fascinating watch, and probably one of Veritasium's best videos to date. Also the way P type and N type is explained by him is extremely intuitive. I really recommend watching it.

[@foogod4237]

The horrible truth that nobody ever speaks aloud: There are actually tiny capacitors in _everything._ They're inside of diode junctions, and amplifiers, they're inside of inductors, and wires, and even the circuit board itself. They're behind your eyelids when you try to sleep... You can't escape them. _You will never escape them..._

[@jupa7166]

​@@foogod4237 Nice! 😂 I like'em 😊

[@GaborHeidenwolf]

I’m an experienced engineer doing gas turbines and generators, but it’s so fun for me to watch! 😂 I will definitely use your videos and Brilliant to explain to my daughter how things work.

[@Idontknowhowtoreadandwrite]

<a href="#" class="seekto" data-time="2">0:02</a> we cant have a Electroboom without a 'boom'

[@thefishingplace6071]

I’m gonna be honest, half the time I have absolutely zero idea what Mehdi is talking about lol, however that hasn’t stopped me from watching him ever since his video “How to make a Electric Guitar” a little over 11 years ago, and even now he still manages to teach me something I don’t fully understand and make me laugh every time. Much Love

[@someguy1202]

I'm laughing like a moron at the P-Ness LOL. People in the office wondering what's wrong with me. 😆

[@AstrosElectronicsLab]

Hey, all circuits now and then need a little P-Ness in them!

[@gregaluise5727]

You explained the material science / device theory (with humor I might add) better than what was presented to me in my past EE college courses! We need more professors to be like you!!!

[@mikethor009]

Nice ZAPs. I wonder...what would be another fun component to explain in a future 101?

[@squidcaps4308]

Op-amps. They are simply awesome and not so simple.

[@beanapprentice1687]

@@squidcaps4308yep, I need Mehdi to explain those for me

[@LarryTaylor-l5m]

This video sneered questions I’ve had about MOSFETs for years. Thank you.

[@DjaniAgain]

<a href="#" class="seekto" data-time="220">3:40</a> P-region 😂😅🤣

[@abbeyoneworld]

<a href="#" class="seekto" data-time="583">9:43</a> oh my world.... I've waited sooooooo long to hear that again from mehdi 🤣🤣🤣🤣🤣❤️❤️❤️❤️❤️❤️

[@gcr100]

Instructions unclear, p_ness stuck on drain

[@Leo99929]

I use transistors all the time. I always have to look up the details on if I need PNP or NPN and if that's P-channel or N-channel etc. You just taught that to me effortlessly in a couple of minutes. Better than my university! thank you Mehdi!

[@Astri.electronics]

<a href="#" class="seekto" data-time="414">6:54</a> Incorrect, the breakdown doesn't occur at that low voltage, Gate-Source oxide layer in power transistors breaks down at around 80V. At this voltage the transistors will be irreversibly damaged. Gate voltages above ~20V only shorten the lifespan of the transistors, but won't necessarily destroy it.

[@JoshuaDavidson]

This is actually one of the best descriptions I've seen. Thank you. And P-ness is awesomely funny.

[@infinitetime3000]

<a href="#" class="seekto" data-time="368">06:08</a> I think the arrow symbolizes the flow of electrons either into the P type to make it behave like N type forming the N channel or away from N type to make it behave like P type to make the P channel

[@aaronmdjones]

That's how I've always interpreted it yep.

[@feedmyintellect]

<a href="#" class="seekto" data-time="253">4:13</a> LOL Mehdi you are too funny my man! That was a Brilliant joke! LOL 😆😆🤣🤣🤣🤣🤣🤣😂😂😂😂😂😂

[@AhmedSamir-tv9zd]

<a href="#" class="seekto" data-time="62">1:02</a> Where is your beard ?😂

[@dandu_bacsi]

Fellow electrical engineer here! @electroboom I think at <a href="#" class="seekto" data-time="472">7:52</a> the channel width and length are switched up, since current flows between source and drain so the conductive channel is actualy horizontal on the drawing. That means the length is the distance from source to drain and the width is the other one!

[@DavidMG99]

<a href="#" class="seekto" data-time="113">1:53</a> Cute "fetus" transistor 😂

[@steventouchton2508]

Long time subscriber here. You literally make learning fun. Thank you for your awesome videos 🙏

[@asprodead9726]

Guys, at <a href="#" class="seekto" data-time="240">4:00</a> mehdi shows a transistor cheme with 4 contacts, but they only have 3, where did extra contact came from?

[@IoT_]

Substrate and one n-channel are united as a source electrode

[@jettrom609]

The extra contact is called the bulk terminal (also called substrate, also called body). Typically it is internally connected to the source terminal.

[@Somelight3069]

4:41 he explains this

[@cyboy-hu4oe]

Slow down Mehdy😂

[@sohigh7433]

That's the power of lingam

[@Mr_Coli]

This was the very best explanation of ANYTHING electro I’ve ever heard!! 😮

[@simoneazzoni3882]

I might be a dumb person but I think for me it is a bit of a confusing simplification calling them switches. It's kinda like saying "it's the current that kills you not the voltage", if you think about a logic circuit that for example switches on and off due to the voltage on a capacitor you might find out that for some part of the cicle the transistor does not act like a switch (but as a voltage controlled current generator) which will not make the circuit behave like you want to or you might get problems with the 0.7V voltage drop being imposed. In short: when I was just curious about electronics and did not yet study it but just used really basic stuff to connect my pre-made boards I did not in fact fully understand how they behaved and often failed at designing logic circuits with mosfets as switches (using them like relays) and that's because everyone says they are a switch.

[@beanapprentice1687]

The thing is, MSOFETs do not have a 0.7V forward voltage drop like bipolar junction transistors do. In fact, the voltage across a MOSFET’s source and drain terminals is basically zero for low currents, rising by a small amount more or less linearly as the current increases, just like a resistor. The only time that the on-voltage across a MOSFET jumps upwards is once the transistor is saturated and cannot handle more current. This saturation current gets pushed up the more you increase the gate voltage. So in many case you can consider a MOSFET like a voltage-controlled switch with a current limiter. Of course, you don’t want to run the transistor in saturation for too long or it will overheat.

[@paulmichaelfreedman8334]

You need a significant overvoltage on the gate compared to the normal supply voltage on the drain(or source, dependant on P or N type) to really open up a MOSFET down to Rds on.. I use a 24V step up module that can supply a little current to supply the (pulled-down) switching voltage to the gates (8 MOSFETs, 200A each, on a big fat heatsink). only a couple of square cm area on a PCB and works perfectly on my 12V car battery powered battery spotwelder which I built myself. Best welds are with a pulse width of 30 milliseconds. Often stronger than factory-welded batteries

[@зробленоруками-ц8м]

​@@beanapprentice1687saturated fets gets use in an electronic loads. It really behave like a heavy duty resistance with a good linearity

[@thomasdjonesn]

I really appreciate this. I have a passing interest in electronics, but some of the concepts have been too dense for me to parse out. This was good, at a basic level, I finally understood what was actually moving and doing the work.

[@the_defaultguy]

<a href="#" class="seekto" data-time="205">3:25</a> *The* _Rizz_

[@cosmefulanito5933]

A mosfet masterclass made in a fun and simple way. Congratulations.

[@flyviawall4053]

For sure you know what source or arrow means. It’s source of electrons or flow direction or electrons! But yes it’s reverse(stupid convention) of the current direction!

[@paulmichaelfreedman8334]

That's because we are positive-biased. We say electric current flows from + to - because the electrons leave holes in the lattice that act as positive charges. Those holes move in the opposite direction of the electrons due to how electrons jump into the wake of the previous electrons moving out of holes (which themselves are jumping into the wake of their predecessor). It also perfectly demonstrates the quantum nature of electrons and electric current. Also, the fact that the holes determine the characteristics of the current, is very good because the holes can move at a good fraction of light speed while electrons themselves can only move a few millimeters per second through a conductor. P.S. It really are the electrons doing the work, but in doing so they create a quasi-particle (the electron holes)

[@flyviawall4053]

@@paulmichaelfreedman8334 It has another meaning underneath too. Think about it, if you have two bottles of liquid in different pressure, for sure the(molecules of) high one will flow to the low one. In EM field this is not the case. Electrons will flow from lower potential to higher potential. This is because charges repel each other in EM field, unlike gravity, mass attract each other(although gravity may not be called a “field”). This imply the strength of electric field(potential) is the opposite of magnetic field(charge). And it’s unintuitive to say current flows from low to high potential, so somebody just flipped the convention. Technically, current is not refer to electrons flowing but the effect of electrons moving causing potential flowing.

[@paulmichaelfreedman8334]

@@flyviawall4053 Uhm...no. Charge never flows from lower to higher potential. That requires input of energy. And even then the extra energy creates a potential greater than the one it needs to flow to -> still from high to low. Maybe you're confused with high and low entropy. You should learn the laws of thermodynamics (especially the 2nd one) and the law of conservation of energy. They are tried and true. Your arguments are complete BS. And the electric field is not opposite the magnetic field, it's phase shifted 90 degrees, if you know what that means.

[@aarondiller8394]

New ElectroBOOM subscriber here. I thought he was just the guy who kept shocking himself, but now I see practical explanations, critical thinking, and rage-fixing. Keep it coming, brother!

[@JayGiri-t1t]

<a href="#" class="seekto" data-time="91">1:31</a> good video

[@smbowner]

This was really awesome work Mehdi! Love the way you explained it! I like to add from my point of view as an engineer who is more towards the application of engineering concepts in products for real life, I love to see more about the applications of the MOSFETs in a cool project! Very nice work again, I always watch your videos within the first hour of release.

[@BlackHoleForge]

<a href="#" class="seekto" data-time="545">9:05</a> On? On-er? 😂

[@renxula]

That's the clearest explanation I've seen, and now it makes much more sense. Thanks!

[@MikuAuahDark]

<a href="#" class="seekto" data-time="253">4:13</a> the automatic caption gone wild 💀

[@salty_deez]

Ayooo

[@nicodeguyoh66]

i have a CS background, and the electrical side of CE has so much math, i really like how you connect these concepts to the world !

[@DudokX]

Manipulating P-Ness with voltage! thats brilliant!

[@jimsvideos7201]

I’m sure somewhere someone is into that.

[@shadowflash705]

​@@jimsvideos7201 Bzzzzzt

[@taitano12]

My favorite part is how your explanations show that you know how to NOT do the boom. Reminds me of a teacher I had that would demonstrate component failure for the same reason. It helps to teach the component's operations and parameters, while teaching how to diagnose said component's failure.

[@billmask]

Lovely

[@cheetocatto01]

If my teacher had the same energy as Mehdi when he said FULL BRIDGE RECTIFIAH, i'd be an engineer today.

[@GamesAndRandomFacts]

My friend u are UNIQUE ! We are lucky to have a so Fun GENIUS like u on KZbin!if u weren't here ... someone had to invent someone like u... but i think that's impossible because there is only ONE OF YOU! we all love your work and your way to teach very useful stuff or just showing how usefull stuff works.... please never stop being like this ! And never leave us ! The hole is gonna remain if u are leaving KZbin is never gonna be filled by anyone! Bye from an Italian fan ! By my friend!

[@stevelionheart]

I usually love your content, but THIS ONE IS A BANGER

[@QuinlanPower]

Lovely to get real video from you again!