I found a hidden gem (through a TH-cam recommendation). High-quality content is why likes and views are less than a stupid video. Keep up the good work! 🙌
I have been designing power mosfet stuff for decades, having to take into consideration all the parasitics, and I have NEVER see such a clean explanation as yours, good stuff! I think teachers and professors should take note!
i have to back to books again.... never take that much importance to parasitic componentes !! It's good to listen to people who know, talk about deep topics.
At 18:25 "...and this is thousands of volts, actually quite dangerous not only to people, but more importantly to circuitry..." LOL! Thanks for the video!
It feels like all the hard lessons, I've had to learn about mosfet, and how they work, and the things people failed to tell me, all those years ago, have been condensed into one video. Mabe other people won't need 30 years of learning by trial and error. I love the simple analogies. I often make a "MOS-diode" because it drops less voltage. You simply connect the gate and source together. I also appreciate to time and effort it takes to edit these videos🤔😉. If you only ever watch a youtube video, you will never never know the pain it takes to make one. Thank you 👍
If there is one takeaway from this (as a digital guy) is I need to find a MOSFET expert to design a circuit/PCB for me. I am beginning to realise why things have not been working. What an excellent video. You could do a whole degree in MOSFETs alone.
It kind of works like that if you try to use IC's as much as possible for 'function blocks', most IC's use cmos. And if you want to use a mosfet to switch something use a mosfet-driver IC and use the recommended circuits in the datasheets of the IC's, then you can kinda just treat it as if it's all digital.
The connection between 2-port circuits and the analysis of 3-lead devices like MOSFETs and BJTs is crucial for understanding how these components function in more complex circuits. By considering a MOSFET as a 2-port network, you can better grasp how the various parameters interact, even though MOSFETs introduce non-linearity into the equation. The emphasis on Appendix C and the importance of mastering 2-port network theory as a foundation is a key takeaway, as it provides the theoretical basis to transition from analyzing simpler 2-lead devices to more complex 3-lead components.
That was truly amazing! I'm just learning about electronics and whilst I knew what MOSFETS are and what they do I now feel as if I now know them far better, if not, dare I say it, intimately. I have to confess it all got a little intimidating since there is evidently so much to learn about these critters, but your presentation kept to the point and dismissed the surrounding unnecessary ephemera to deliver pragmatic solutions. I think my only complaint is that you don't do as many of these vid's as I would like, (chuckle), though I have to confess I'm more than content to take whatever you can throw at us. I often feel overwhelmed by the beneficence of folks like yourself who donate so much time in order to give the rest of us so much information and I thank you for that. I know this is becoming an often over used phrase but, this is what the interweb thingy should be about, best quality info dissemination and you get the highest BQID quotient of 10, on a logarithmic scale of course!!!! Take it easy youth, keep doin' what it is you do, best regards Matt.
Thanks Matt that really means a lot! I wish I had more free time to make videos, but for the foreseeable future 1-2 a month is probably going to be my limit. Fear not, however, as I have some exciting plans!
@@electrarc240 If I watched your video 40 years ago when mosfets were in their early days, and had way worse parasitics, this video would have saved me a lot of frustration.
I'm an electronics engineer that defected to software camp... That was a very clear and engaging presentation. Loved it! The pace, the voice, the material and delivery! Thanks!
Wonderful video, in 35 minutes you summurized like 90% percent of what would take someone months working under experienced people in PE to get a grasp of. This video should be watched by students in EE
I appreciate how you broke down the key differences between MOSFETs and BJTs. The explanation of MOSFETs acting more like capacitors between their terminals, particularly the gate-source capacitance (Cgs), was spot on. It's crucial to understand that while MOSFETs have very low static current at the gate-source junction, the current can increase significantly with a high-frequency signal due to the drop in impedance. This is a vital consideration when designing circuits with dynamic signals on the gate. Also, your comparison of MOSFETs as voltage-controlled current sources (VCCS) versus BJTs as current-controlled current sources (CCCS) helps clarify their different operating principles.
I love how you start by a simplest model of a MOSFET, then you increase the model's complexity, one bit at a time! It's a very good way to teach electronics that I have seen so far. Also, one PCB to showcase every model is very impressive! I hope TH-cam will give enough credit this channel deserves!
I first learned electronics in the tube world with Diode, triode, pentode devices. The new magic was bipolar transistors. Almost all of my designs have been using Bipolar transistors and Integrated circuits. FETS and later MOSFETS remained somewhat mysterious. We used to think of them as a water hose that you step on to control. Your explanation here has opened my eyes. Your technique of showing resistance and capacitance and induction of the device quickly gets the point across. Thank you for your video.
Threshold means the beam under the door, which prevents water from running into the apartment. In electronics, threshold means a value that must be exceeded for an action to be successful. Threshold means to hold back.
After all these years as an Electrical Engineer with years of electronic knowledge and experience, I've come upon a great teacher who make it seem so easy. Great.
This video is so INSANELY USEFULL!!!! So many videos about MOSFETs explain it as simply a switch, completely glossing over all the little behaviors and secondary components and requirements that go into properly using one. Which if you're going to be making an actual real practical circuit with one... you cant just ignore. This channel actually explaines things with a level of detail and conciseness thats hard to find anywhere else!
You explain mosfets so thoroughly that I can comprehend exactly what is happening and why... You are going to change the world if you keep teaching this effectively.. GOOD JOB ElectrArc240. Keep on keeping on.. Thank you so much.
Finally someone explains MOSFET in a way that I can relate to and understand, and hence highly appreciate. I had a rough idea at first how it works, but now I think I know enough to be dangerous 😈😅
I once made a crude speed controller for an rc car out of a servo board driving a stack of parallel mosfets to handle the current draw of the motor. This video had so much depth!
@@electrarc240 It was clear reason to me . That changes nothing to the content , whih is perfect . Most important thing is the way , how smoothly You sharing Your knowledge . I'm an ear , than eye . Sound engineer and electronic technician with above 30 years of practice . First thing , when Im servicing elecronics is visual and + often I make some photos . Regards from Poland !
You were obviously very well-prepared, and your explanations were very clear and well-structured. I knew most of this, but it is refreshing to hear someone who knows how to put the cookies on the bottom shelf. As Richard Feynman says, if you can't explain it to a fifth-grader, you don't know the material well enough (not an exact quote...). I expect you also learned a bit about the devices when preparing this presentation. Well Done.
Good afternoon, engineer, I love your videos, they are really very illustrative and very good tools that you use. I congratulate you from Mexicali, Baja California, Mexico, 🎩🇬🇧🇲🇽
I, for one, think that the use of real physical pcb’s and real physical component examples are an excellent way to demonstrate what was being explained here, as opposed to an animation. More real, being connected to real power from very real power supplies. This video contains very important and useful information. Information that I came to realize the importance of a few years back when I decided to design and build my own FET switched spot-welder for building battery packs because I, being the idealist that I sometimes am, was not satisfied with the two extremes regarding price and quality of pcb-based spot welder offerings that seemed to be the only choice at the time. I liked the price of the $20-$30 pcb’s from ebay, but I was not a fan of design flaws that they seemingly all copied from a few initial designs. Flaws which caused the smoke to be let out within a very short use life. Fun fact, if you learn everything contained in thus video about power mosfets, you have all the information you need to build an effective and functional mosfet-based spot welder. Some of the losses covered in this video become very apparent when switching several hundred amps of current, even if it is just on and then off as a solid-state switch. The linear region. Switching the gate capacitance miller-plateau as quickly as possible. Gate resistance. Gate-source voltage. Voltage spikes from flyback inductance. These were all extremely important factors to consider in designing a fet-based spot welder. Another thing: If you learned everything shown in this video, you now have all the knowledge needed to make a few simple modifications to those $20 spot weld pcb’s to make them as reliable as a $300-$400 pcb-based spot welder, and to modify them to handle 3x their rated current spec for welding copper strip, even, instead of the somewhat convenient yet not-so-conductive nickel strip.
You young (to me) man are a great teacher, found your channel by chance, now subscribing who wouldn't interested in electronics. Looking forward to watching your other videos.
Nice explanation! Visual content significantly increase understanding. Thanks! Cheers from Ukraine. I have master's degree in radiophysics and electronics.
Like OTHERS in this comment section, I already had a 'better than average' understanding (i.e. Not perfect, but not abysmal either) of all the basics. This video was STILL brilliant despite my (limited?) prior knowledge on the subject... Well done sir!
it must be great to be an EE with all this awesome new stuff coming out. i would wanna throw together an inverter with those nexperias instantly. what amazing stuff
As an American who watches a lot of BBC documentaries, I have to say you have that “British narrator voice” down cold. Like David Attenborough. Attenborough could make a compelling narrative out of an elephant scratching his ass on a tree. You just did the same for MOSFETS.
I’ve already watched the other videos explaining mosfets but this is so much better! No fancy animations to distract & impress the masses for me, please!
Another great video! I'am the commenter in the previous SMPS video of yours. I ended up just connect the negative to the earth/ground lead. Our house actually don't have earth connection on the outlets. The earthing is just 1.5 meters of rebar into the soil, and I guess it works since my power amplifier is not hissing anymore. Oh, the power supply is Meanwell LRS-350
I am going to have to watch this a few more times to soak it up, great work! My mind gets pissed off at the fact they names it a gate and I always think ground when I see the G. Lol
I've taught this sort of stuff and like your approach - if I hadn't retired I'd be using it in some way. Really good that you're overlaying your relay with the schematic however it took me a while to understand your purple wires. Initially I thought they both came from your lamp and you were connecting it in parallel with the relay. It would have been clearer if at 2:44 (and later) your 2nd PSU negative was a black wire and a red wire was visible connected to the high side of the lamp. I particularly loved your tap analogy for the saturation current and you answered questions about parasitics I've long been unable to find answers to!
On body diodes: "every MOSFET has one, and it's nothing to be ashamed of" That unlocked a deeply repressed memory from primary school - I have no idea what was being taught at the time.
Yeah, in my early days I utterly hated the body diode, but now, not a big deal. Some will say it is useful in some circuits, but that is VERY RARE because the internal body diode is crappy compared to an external Schottky.
I'm really impressed and subscribed. No annoying narcissism so he doesn't feel he has put his face in every frame. Straight to the nitty gritty without going too far into the weeds. I'm retired now but using this as part refresher course, part new ideas course which I feel would greatly benefit newbies hoping to learn how to let the smoke out of stuff ( we all did that right?)
Oh no I just finished recording my next video where I show my face a lot more, hope that doesn’t make me a narcissist 😭. Thought I’d at least try it. It also annoys me when TH-camrs do that just to try and look good but I’m almost always showing something so hopefully that makes it ok. Plus I know I’m gonna get a barrage of comments about my teeth…
11:38 Saturation is real. I just spent some time playing with a power MOSFET and a 12 volt turn signal light bulb. With 12 volts source to drain voltage and 12 volts on the gate, the device stays so cool that it does not need a heat sink. The light is getting 2 amps of current and 24 watts of power, but even after several minutes the transistor does not get hot. When I reduce the gate voltage to 4.5 volts to dim the bulb (about 1 amp of current), the transistor heats up quickly. Just one minute in saturation gets the heat sink so hot that I can barely touch it. Thank you for the video!
Excellent video, i don't know you and your channel. I found this video in my feed and after watching this video i really liked the way you teach and video quality. Awesome 🎉❤
These videos have been so educational and well done. The custom circuit boards to explain concepts works really well. Instantly subscribed, keep up the amazing work!
The best ever explanation about MOSFETs I have ever heard! Very well demonstrated and explained all the important details! Thanks! And please go on creating such a valuable tutorials! Wish I have had it during the exam preparations at the university! And thanks again :)
Well. You weren't kidding when you titled that video. I was expecting to learn a few things about generally biasing the device, but the rest was gravy.
Excellent video! Finally some clear explanations that a noob like me can use to understand how some MCU's and MOSFETS got damaged in the experiments. Thank you for sharing!
I watched your video. I heard you say words that, by themselves, I understood, but in the combination you used, was all gibberish. I wish I could understand just a fraction of the information you provided, but alas, the brain is full. I don't even know what MOSFETS are used for. I'm sure someone got something out of this video, it was very well produced and I'm sure someone understood your explanations. Congrats.
For the moment, I saw 3-4 of your vidéos, they were "what is XXX and how that work" (an expemple), and that remind an old series french that I watch a long times ago named "c'est pas sorcier". So thx for this vidéos.
Such an awesome and better way of explaining some of these concepts than all the other videos i've been watching recently on MOSFETs! One thing which wasn't covered is "avalanche, or at least i dont think it was covered but i'm still learning all this so maybe it was but goes by another term or only applies for P-channel or something? Would be very interested in a video in this style covering perhaps some practical examples or demonstrations of the "gotchyas" or problematic things touched on here.. for example at 20:50 you mention ringing which i'm aware of and think i understand correctly but perhaps would understand even better with this style of explaining/demonstrating. Anyhoo, really enjoyed it and hope to see more videos from you like this!! It's compatible with the way my brain works and learn things 😆
Truly excellent! Future enhancements: GaN as well as SiC. Bridgeless vs 1895 vintage bridge circuit. In CMOS, mention the inherent quantum mechanical defect caused by the difference in mobilities on N-channel and P-channel FETs. In a GPU, 600W is not that much power, but your PCB can catch on file. Use 21st-century circuits, not just the 1920 boost and buck converters. Mention hybrid switching to minimize switching losses, not just PWM. Overall, it was the best presentation I've ever seen. 👍👍
25 years as an analog electronic engineer here and I'm not ashamed to say that you taught me some things there. Excellent work !
The proverbial "An old dog can learn new tricks" ... from a young'un. :D
I concur, been one since 96 and felt really dumb when he introduced the relay.😂 Always been the purest form of what a MOSFET. He's a genius.👏👏👏
Í8ii8iiī@@clintchrystie6727
I found a hidden gem (through a TH-cam recommendation). High-quality content is why likes and views are less than a stupid video. Keep up the good work! 🙌
I have been designing power mosfet stuff for decades, having to take into consideration all the parasitics, and I have NEVER see such a clean explanation as yours, good stuff!
I think teachers and professors should take note!
Wow that's amazing, thank you!!
i have to back to books again.... never take that much importance to parasitic componentes !! It's good to listen to people who know, talk about deep topics.
@@estebanjuliandipalmamartin3581My cat's breath smells like cat food.
THEY KNOW BUT WILL NOT TAKE NOTE, IT IS LIKE ASKING A TAXI DRIVER TO CHOOSE TO TAKE YOU 3KM OR 300KM, THE LONGER THE MERRIER, THE MORE BUCKS.
Your knowledge is deep. Your basics are strong. You're a good teacher
you are very smart for choosing real demonstartion rather than animation.. you made a good point
It just hits and sticks harder than an animation. Maybe it's an old school thing, but it tend to make it more memorable. :)
I don't know if anyone has noticed the amount of work in this video. Great job, thank you for sharing and for your effort.
Thank you for noticing 😊
Best mosfet video I have seen so far.
At 18:25 "...and this is thousands of volts, actually quite dangerous not only to people, but more importantly to circuitry..." LOL! Thanks for the video!
bruh, I was about to comment on this as well, that's interesting opinion stating "not only to people, but more IMPORTANTLY to circuits "
LGTM
"...Or worse, expelled!"
It feels like all the hard lessons, I've had to learn about mosfet, and how they work, and the things people failed to tell me, all those years ago, have been condensed into one video. Mabe other people won't need 30 years of learning by trial and error. I love the simple analogies.
I often make a "MOS-diode" because it drops less voltage. You simply connect the gate and source together.
I also appreciate to time and effort it takes to edit these videos🤔😉. If you only ever watch a youtube video, you will never never know the pain it takes to make one. Thank you 👍
Understanding Mosfets become so much easier with this video. thanks bro!😊
Excellent explanation. Your style makes it very easy to follow.
Thanks glad it is helpful!
If there is one takeaway from this (as a digital guy) is I need to find a MOSFET expert to design a circuit/PCB for me. I am beginning to realise why things have not been working. What an excellent video. You could do a whole degree in MOSFETs alone.
You certainly could!
It kind of works like that if you try to use IC's as much as possible for 'function blocks', most IC's use cmos. And if you want to use a mosfet to switch something use a mosfet-driver IC and use the recommended circuits in the datasheets of the IC's, then you can kinda just treat it as if it's all digital.
The connection between 2-port circuits and the analysis of 3-lead devices like MOSFETs and BJTs is crucial for understanding how these components function in more complex circuits. By considering a MOSFET as a 2-port network, you can better grasp how the various parameters interact, even though MOSFETs introduce non-linearity into the equation. The emphasis on Appendix C and the importance of mastering 2-port network theory as a foundation is a key takeaway, as it provides the theoretical basis to transition from analyzing simpler 2-lead devices to more complex 3-lead components.
Speaking of which what was your degree @@electrarc240 in University?
@@PangYauWee I am actually still at university (on placement year at the moment). Studying EEE (Electrical and Electronic Engineering)
That was truly amazing! I'm just learning about electronics and whilst I knew what MOSFETS are and what they do I now feel as if I now know them far better, if not, dare I say it, intimately. I have to confess it all got a little intimidating since there is evidently so much to learn about these critters, but your presentation kept to the point and dismissed the surrounding unnecessary ephemera to deliver pragmatic solutions.
I think my only complaint is that you don't do as many of these vid's as I would like, (chuckle), though I have to confess I'm more than content to take whatever you can throw at us. I often feel overwhelmed by the beneficence of folks like yourself who donate so much time in order to give the rest of us so much information and I thank you for that.
I know this is becoming an often over used phrase but, this is what the interweb thingy should be about, best quality info dissemination and you get the highest BQID quotient of 10, on a logarithmic scale of course!!!!
Take it easy youth, keep doin' what it is you do, best regards Matt.
Thanks Matt that really means a lot! I wish I had more free time to make videos, but for the foreseeable future 1-2 a month is probably going to be my limit. Fear not, however, as I have some exciting plans!
Noice. This was the best most detailed explanation of MOSFETs. I understand MOSFET data sheets much better now
Thanks! Was a bit worried I'd gone a bit far with the parasitics at the end lol
Please don't be worried. It's alright the way you do it.@@electrarc240
@@electrarc240 Not at all; this was brilliant
@@electrarc240 If I watched your video 40 years ago when mosfets were in their early days, and had way worse parasitics, this video would have saved me a lot of frustration.
I'm an electronics engineer that defected to software camp... That was a very clear and engaging presentation. Loved it! The pace, the voice, the material and delivery! Thanks!
Wonderful video, in 35 minutes you summurized like 90% percent of what would take someone months working under experienced people in PE to get a grasp of. This video should be watched by students in EE
I appreciate how you broke down the key differences between MOSFETs and BJTs. The explanation of MOSFETs acting more like capacitors between their terminals, particularly the gate-source capacitance (Cgs), was spot on. It's crucial to understand that while MOSFETs have very low static current at the gate-source junction, the current can increase significantly with a high-frequency signal due to the drop in impedance. This is a vital consideration when designing circuits with dynamic signals on the gate. Also, your comparison of MOSFETs as voltage-controlled current sources (VCCS) versus BJTs as current-controlled current sources (CCCS) helps clarify their different operating principles.
I love how you start by a simplest model of a MOSFET, then you increase the model's complexity, one bit at a time! It's a very good way to teach electronics that I have seen so far. Also, one PCB to showcase every model is very impressive! I hope TH-cam will give enough credit this channel deserves!
I first learned electronics in the tube world with Diode, triode, pentode devices. The new magic was bipolar transistors. Almost all of my designs have been using Bipolar transistors and Integrated circuits. FETS and later MOSFETS remained somewhat mysterious. We used to think of them as a water hose that you step on to control. Your explanation here has opened my eyes. Your technique of showing resistance and capacitance and induction of the device quickly gets the point across. Thank you for your video.
I have been working in electronics for the past 60 years, it's good to know that there are still things that I can learn :)
Threshold means the beam under the door, which prevents water from running into the apartment. In electronics, threshold means a value that must be exceeded for an action to be successful. Threshold means to hold back.
You the best sir you deserve the entire world thank you soooooo much God bless you and please don't stop, we love all your explanations❤❤❤❤❤❤❤❤❤❤❤
Excellent blend of facts with great visuals. Analogue mil comms power RF guy here with 2N3055 flashbacks. I'm in!
After all these years as an Electrical Engineer with years of electronic knowledge and experience, I've come upon a great teacher who make it seem so easy. Great.
This video is so INSANELY USEFULL!!!!
So many videos about MOSFETs explain it as simply a switch, completely glossing over all the little behaviors and secondary components and requirements that go into properly using one.
Which if you're going to be making an actual real practical circuit with one... you cant just ignore.
This channel actually explaines things with a level of detail and conciseness thats hard to find anywhere else!
Your teaching PCBs are very helpful, actually seeing a capacitor, resistor or inductor helps to reinforce their existence in the MOSFET.
King of MOSFET videos.
What a clean explanation. I wish I had this video 30 years ago!
Thank you!
You explain mosfets so thoroughly that I can comprehend exactly what is happening and why... You are going to change the world if you keep teaching this effectively.. GOOD JOB ElectrArc240. Keep on keeping on.. Thank you so much.
Thank you very much! Just need to resist the urge to become a supervillain...
@@electrarc240 The bad guys are sometimes the Heros.
Finally someone explains MOSFET in a way that I can relate to and understand, and hence highly appreciate.
I had a rough idea at first how it works, but now I think I know enough to be dangerous 😈😅
That's the perfect amount to know 😏
Wow I'm impressed with your teaching skill.
I once made a crude speed controller for an rc car out of a servo board driving a stack of parallel mosfets to handle the current draw of the motor. This video had so much depth!
Thank you for making this well though-out video. You cover the field without losing yourself in formulas. I really learned a lot.
The relay wanna-be-mosfet is one of the most beautiful didactic teaching tool I've seen. Thank you for your effort making this video!
Thanks! Spent a good while shopping online for the sexiest SPST relays, wasn't cheap 🥲
Finally someone done explaining right. More people like you are needed in this world
Not only accurate information, but superbly presented. Easy for beginners, and still enlightening for an EE of 45 years practice.
Great job ! All is clear and in instant , simple form . Only one detail caught my eye . TIP 36 C is 100V; 25A; 125W bipolar PNP .
Shhhh!! I didn’t have any TO247 MOSFETs in my lab at the moment. I was hoping nobody would notice. Good eye!
@@electrarc240 It was clear reason to me . That changes nothing to the content , whih is perfect . Most important thing is the way , how smoothly You sharing Your knowledge . I'm an ear , than eye . Sound engineer and electronic technician with above 30 years of practice . First thing , when Im servicing elecronics is visual and + often I make some photos . Regards from Poland !
very nicely done - complex topic explained in an easy to understand way !
Your demonstration with different PCB modules is great!
WOW! This is by far the best explanation of a power MOSFET I've seen.
I learned a couple of new things that I had misunderstood. Thanks!
For years I’ve been poring over data sheets and application notes and you explained all the important stuff in this video. Good job 👍🏻 .
You were obviously very well-prepared, and your explanations were very clear and well-structured. I knew most of this, but it is refreshing to hear someone who knows how to put the cookies on the bottom shelf. As Richard Feynman says, if you can't explain it to a fifth-grader, you don't know the material well enough (not an exact quote...). I expect you also learned a bit about the devices when preparing this presentation.
Well Done.
Thank you very much! And yes I definitely did 😁
The Best MOSFET Video. Your custom PCB with the relay is a great idea!
Thanks! I like to do whatever I can to help explain things
Good afternoon, engineer, I love your videos, they are really very illustrative and very good tools that you use. I congratulate you from Mexicali, Baja California, Mexico, 🎩🇬🇧🇲🇽
I, for one, think that the use of real physical pcb’s and real physical component examples are an excellent way to demonstrate what was being explained here, as opposed to an animation. More real, being connected to real power from very real power supplies.
This video contains very important and useful information. Information that I came to realize the importance of a few years back when I decided to design and build my own FET switched spot-welder for building battery packs because I, being the idealist that I sometimes am, was not satisfied with the two extremes regarding price and quality of pcb-based spot welder offerings that seemed to be the only choice at the time.
I liked the price of the $20-$30 pcb’s from ebay, but I was not a fan of design flaws that they seemingly all copied from a few initial designs. Flaws which caused the smoke to be let out within a very short use life.
Fun fact, if you learn everything contained in thus video about power mosfets, you have all the information you need to build an effective and functional mosfet-based spot welder. Some of the losses covered in this video become very apparent when switching several hundred amps of current, even if it is just on and then off as a solid-state switch.
The linear region. Switching the gate capacitance miller-plateau as quickly as possible. Gate resistance. Gate-source voltage. Voltage spikes from flyback inductance. These were all extremely important factors to consider in designing a fet-based spot welder.
Another thing: If you learned everything shown in this video, you now have all the knowledge needed to make a few simple modifications to those $20 spot weld pcb’s to make them as reliable as a $300-$400 pcb-based spot welder, and to modify them to handle 3x their rated current spec for welding copper strip, even, instead of the somewhat convenient yet not-so-conductive nickel strip.
You young (to me) man are a great teacher, found your channel by chance, now subscribing who wouldn't interested in electronics. Looking forward to watching your other videos.
Incredible, fantastic lesson , thank you very much.
Nice, clean explanation and demonstration, thanks for your work.
Nice explanation! Visual content significantly increase understanding. Thanks! Cheers from Ukraine. I have master's degree in radiophysics and electronics.
Like OTHERS in this comment section, I already had a 'better than average' understanding (i.e. Not perfect, but not abysmal either) of all the basics. This video was STILL brilliant despite my (limited?) prior knowledge on the subject... Well done sir!
Thank you very much!
it must be great to be an EE with all this awesome new stuff coming out. i would wanna throw together an inverter with those nexperias instantly. what amazing stuff
As an American who watches a lot of BBC documentaries, I have to say you have that “British narrator voice” down cold. Like David Attenborough.
Attenborough could make a compelling narrative out of an elephant scratching his ass on a tree. You just did the same for MOSFETS.
Why thank you kind sir
David Attenborough could talk about grass growing, and I would still be glued to the TV. :D :D
Congratulations on a very impressive presentation...👏👏👏
I’ve already watched the other videos explaining mosfets but this is so much better! No fancy animations to distract & impress the masses for me, please!
Another great video! I'am the commenter in the previous SMPS video of yours. I ended up just connect the negative to the earth/ground lead. Our house actually don't have earth connection on the outlets. The earthing is just 1.5 meters of rebar into the soil, and I guess it works since my power amplifier is not hissing anymore. Oh, the power supply is Meanwell LRS-350
30:32 you got me, I snorted beer when you added the snubber components. Well played. 🍻
😁
Why yes, just throw a bunch of caps on it for some serious snubbin'. :D
Great command of language and pedagogy. Teaching by demonstration is something I tried to do for 20+ years, seldom as effectively.
Another amazing video and explanation, keep it up!
Cheers bro
Top draw explanation and presentation......
I must admit when you ignored the body diode first off, I was chomping at the bit...😊
I know I thought it was a big gamble to explain it like that. But I am a firm believer in one thing at a time so I stuck with my gut. Thanks!!
I have learned more in the last half hour than I have in the last 5 years with playing building & exploding mosfets!
I am going to have to watch this a few more times to soak it up, great work!
My mind gets pissed off at the fact they names it a gate and I always think ground when I see the G. Lol
I've taught this sort of stuff and like your approach - if I hadn't retired I'd be using it in some way. Really good that you're overlaying your relay with the schematic however it took me a while to understand your purple wires. Initially I thought they both came from your lamp and you were connecting it in parallel with the relay. It would have been clearer if at 2:44 (and later) your 2nd PSU negative was a black wire and a red wire was visible connected to the high side of the lamp.
I particularly loved your tap analogy for the saturation current and you answered questions about parasitics I've long been unable to find answers to!
Yeah I'm not sure why I made them all purple that was a bit silly of me. Thanks!
On body diodes:
"every MOSFET has one, and it's nothing to be ashamed of"
That unlocked a deeply repressed memory from primary school - I have no idea what was being taught at the time.
I can take a guess...
Yeah, in my early days I utterly hated the body diode, but now, not a big deal.
Some will say it is useful in some circuits, but that is VERY RARE because the internal body diode is crappy compared to an external Schottky.
I'm really impressed and subscribed. No annoying narcissism so he
doesn't feel he has put his face in every frame.
Straight to the nitty gritty without going too far into the weeds.
I'm retired now but using this as part refresher course, part new ideas course
which I feel would greatly benefit newbies hoping to learn how to let the smoke out of stuff
( we all did that right?)
Oh no I just finished recording my next video where I show my face a lot more, hope that doesn’t make me a narcissist 😭. Thought I’d at least try it. It also annoys me when TH-camrs do that just to try and look good but I’m almost always showing something so hopefully that makes it ok. Plus I know I’m gonna get a barrage of comments about my teeth…
This video was exceptional! Great content and it was presented better than anything I have seen.
Wow, thanks!
Simply brilliant! The dry British humor helps hold interest. Well done!
excellent video waiting for the next one 👍
Have used FETS for years and this is a great lesson!
Fantastic video.
11:38 Saturation is real. I just spent some time playing with a power MOSFET and a 12 volt turn signal light bulb. With 12 volts source to drain voltage and 12 volts on the gate, the device stays so cool that it does not need a heat sink. The light is getting 2 amps of current and 24 watts of power, but even after several minutes the transistor does not get hot.
When I reduce the gate voltage to 4.5 volts to dim the bulb (about 1 amp of current), the transistor heats up quickly. Just one minute in saturation gets the heat sink so hot that I can barely touch it. Thank you for the video!
Without understanding that much of this i gotta say I was very impressed, thank you very much! Forever subbed
Excellent video, i don't know you and your channel. I found this video in my feed and after watching this video i really liked the way you teach and video quality. Awesome 🎉❤
Awesome job. This video is one that every designer needs to "save" and "share".
These videos have been so educational and well done. The custom circuit boards to explain concepts works really well. Instantly subscribed, keep up the amazing work!
Great dedication to teaching .. you have designed and populated loads of such plectrums for this video!! 🙏
This one certainly took quite a bit of planning, and waking up at night with new ideas 😅
Great video, you're an excellent teacher.
The best ever explanation about MOSFETs I have ever heard! Very well demonstrated and explained all the important details! Thanks! And please go on creating such a valuable tutorials! Wish I have had it during the exam preparations at the university! And thanks again :)
Very nice explained sir thanks 👍 from India
Thank you for sharing these useful videos ❤❤
Hello, congratulations, one or rather the best explanations that I have seen to date!
I foresee a fantastic and fast success to this channel 👍👍
Excellent explanation 👍👍
Absolutely excellent, thank you for taking the time and effort to make such a video.
Well. You weren't kidding when you titled that video. I was expecting to learn a few things about generally biasing the device, but the rest was gravy.
criminally underrated channel
Very clear an educational video. Great work !!
the best thing i have done in 2024 is found your channel
Excellent video! Finally some clear explanations that a noob like me can use to understand how some MCU's and MOSFETS got damaged in the experiments. Thank you for sharing!
I watched your video. I heard you say words that, by themselves, I understood, but in the combination you used, was all gibberish. I wish I could understand just a fraction of the information you provided, but alas, the brain is full. I don't even know what MOSFETS are used for. I'm sure someone got something out of this video, it was very well produced and I'm sure someone understood your explanations. Congrats.
Wow. So much to absorb in this video. I need to watch it several more times. Thanks!
For the moment, I saw 3-4 of your vidéos, they were "what is XXX and how that work" (an expemple), and that remind an old series french that I watch a long times ago named "c'est pas sorcier".
So thx for this vidéos.
Such an awesome and better way of explaining some of these concepts than all the other videos i've been watching recently on MOSFETs!
One thing which wasn't covered is "avalanche, or at least i dont think it was covered but i'm still learning all this so maybe it was but goes by another term or only applies for P-channel or something?
Would be very interested in a video in this style covering perhaps some practical examples or demonstrations of the "gotchyas" or problematic things touched on here.. for example at 20:50 you mention ringing which i'm aware of and think i understand correctly but perhaps would understand even better with this style of explaining/demonstrating.
Anyhoo, really enjoyed it and hope to see more videos from you like this!! It's compatible with the way my brain works and learn things 😆
So glad I found this channel. Subbed here for sure!
Very impressive overview
Excellent explanation. Thank you very much.
The video presentation was smooth and informative. You put a lot of thought and effort into it. Thank you.
Thank you Sir, I’ve learned a lot.
Truly excellent!
Future enhancements:
GaN as well as SiC.
Bridgeless vs 1895 vintage bridge circuit.
In CMOS, mention the inherent quantum mechanical defect caused by the difference in mobilities on N-channel and P-channel FETs. In a GPU, 600W is not that much power, but your PCB can catch on file.
Use 21st-century circuits, not just the 1920 boost and buck converters.
Mention hybrid switching to minimize switching losses, not just PWM.
Overall, it was the best presentation I've ever seen. 👍👍
I'm a total newb and loved the video! Thanks.
Great job. Learned a lot. Thanks.