I love this video!! It's the perfect combo of intelligent discourse without getting into any of the real tough quantam physics, allowing layman people who work with MOSFETs to understand them at a level that doesn't require a PHD
I now realise how a MOSFET transistor works. SIMPLY PUT, A VOLTAGE AT THE GATE ALLOWS CURRENT TO FLOW BETWEEN THE SOURCE AND THE DRAIN. WICKED VIDEO THANKS.
This is best illustration of how transistor, works i have ever seen! Extremely easy to understand thanks to this video. Great job! Need more about every electronic component.
This is an excellent video on how MOSFETs work. Thank you for putting it up here. Good Job, Universidad de Granada! As a continuation of the explanation for the name MOSFET: The phrase Field Effect is what you get if you apply a gate voltage of the same polarity as the doping polarity of the substrate ( the big bottom material in the diagrams ) ; what occurs is a repelling of the electrical fields of the gate & substrate, which then allows a channel to be formed allowing for current flow.
This video was intended to be an introduction to the concept. The full understanding of the devices requires deep science and maths, of course. Thanks for commenting!
This is one of the simplest easy to understand videos about transistors I've ever seen, I do wish they had shown how pnp transistors work in a bit more detail, although the video shows they are basically the same thing a solid state switch.
Great comment. The charge of the impurities should be also considered (they are not depicted in the schematics in 5:02, just the colour of the regions try to remind you the type of impurities in each area). In fact two PN junctions appear, giving as a result that charge distribution. PN junction is the topic of the video we are currently working on, so probably you'll understand the thing better when we release it. Thanks for commenting!
Thanks for commenting :-D Yes... the truth is that the 8-bit representation of the electrons moving in the circuit are supposed to be the members of the team who worked on the script ;-)
I really like this video, it explains everything very simply and I found that the way the MOSFET was introduced in the beginning of the video made it not intimidating. Also, the music throughout the video was very awesome and made the material more comfortable and enjoyable. Where can I find more videos like this?
@DancingSpiderman Thank you! Well, yes, you are right, we could comment on a little bit the meaning of "Field Effect" in the video. Anyway, I hope the users would read your comment about it too, so thank you for the note. Thanks for commenting! :-)
May you live a long life Full of gladness and health . May all God's blessings descend upon you. May peace be within you may your heart be strong. May you find what you're seeking wherever you roam.
1. Roughly speaking, the switch is controlled by the voltage in the gate. Depending on the value there, the switch would be on or off. 2. This is just the brick to build the house. In the last section of the video you can watch how a couple of MOSFETs would work as an inverter. Logic gates are obtained (AND, OR, NAND, NOR...) combining more MOSFETs. This is studied in digital electronics. You can also have a look on my new video on pn junctions. Thanks!
Hi! Well, the names of the contacts make sense if electrons go into the device by the source and are collected by the drain. Probably you are confused with the current direction. Since electrons are negative charges, the current would be in the opposite direction, from drain to source, as you may know. Thanks for commenting!
Thank you! Yes, I do have a very busy real world job, hahaha. Next one: the pn junction. I can't say when it is going to be finished, but thanks for your support :-)
A MOSFET is turned on and off based on the voltage of the gate electrode. Generally the gate electrode is controlled by another transistor. Large networks of transistors are built to form functional blocks such as registers (memory), latches, adders, multipliers, etc.
Thank you for your comments. I have observed that the background music might be annoying when listening to the video with low quality speakers, but it seems to be fine when listening to using good ones or headphones. Probably this might help. Anyway I'm grateful for your comments.
Deseabamos hacer una película para que usted la viera gratis por internet y pudiera hacer su crítica constructiva correspondiente, pero nos salió un pequeño documental. La próxima vez mejoraremos en esto. Gracias por comentar.
Hi again! Well, there are many differences since they are different devices. Probably the most relevant one might be that the BJT carries current by every contact, meanwhile MOSFET has a current just between S and D. Gate in the latter controls the current with its voltage, but there's no current in that contact. But there are many other differences, of course. Since BJT consist on two polarized pn junctions, you could watch our last video about pn junctions (browse my channel). I hope it helps.
I find this video very misleading. At 5:44 the principle is absolutely wrong. Attaching a positive gate potential with regards to the source potential will not form a channel. The channel is formed because of the gate bulk voltage. In the case of an N channel transistor, the bulk is usually connected to ground. The channel is formed because you attach a positive potential to gate with regards to bulk. This will push majority holes out from the region under the gate, leaving there only minority electrons. That is how a channel is formed. Talking about VGS is misleading, the only reason why VGS is used is, because source and bulk are usually shorted.
The gate may have a certain voltage due to many different causes. For instance, it might be caused by processes where a signal is triggered (sensors), or it might be a logic gate with an ouput of 1 or 0 feeding the next logic gate...
When transistors are part of circuit, you could say that (in this case) the source and the drain are 'directly' connected to the circuit, playing a passive role.The gate is the input signal and determines the flow of current. The output is connected to the circuit (right before the source or right after the drain, depending on its function). The simplest function to look for is the invertor (NOT port).
great video. im an engineer at a fab and oh yea, we do make lots of cmos. very cool that you incorporated wafer cross-section images into the video btw.
@ljay0778 Hi! most of the explanation in this video is based on N-CHANNEL MOSFET, so the positive voltage at the gate is right. I'm afraid you could be a bit misled because N-CHANNEL MOSFET has a channel in a p-type semiconductor (the inversion channel).
Hi! I don't think so. Electrons flow from the source to the drain (that's why the names). Nevertheless, since they have negative charge, the electrical current goes from drain to source.
No, an NMOS turns on when Vgs > Vt. Vgs is Vg - Vs, or the voltage between the gate and source terminals. A PMOS turns on when Vgs < Vt. Vt is positive for an NMOS and negative for a PMOS.
Hi! Base, collector and emitter are the contacts for the BJT (bipolar junction transistor), not the MOSFET ;-) Even there is a paralellism between them, they are different devices, is not about German.
@ljay0778 Hi again! where is the battery symbol drawn? In which time does it appear, or in which scene? I have checked out the video, but I can't find it :-) Thanks!
Is it possible to put mosfets in series in order to increase the source voltage? For example I have 5 mosfets rated at 450 volts. Can I put their sours and drains in series, so that I can increase the voltage up to for example 1200v?
I'd like to ask a question: I have learned the three contacts of a transistor to be called "base", "collector" and "emitter", however this is in German. Is this the same as "Source", "Gate" and "Drain" (with base being the gate, collector being the source and drain being the emitter), or is there a difference?
Very impressive! I learned quite a bit of information about transistors here that I was never taught in any of my electronics courses. (We avoided transistors.) I was curious - what type of material is the insulating dielectric made of? Most time it is silica, but is it crystalline or amorphous? I'm guessing it's amorphous silica (glass), as using crystalline silica would cause strange problems.
Nice explainations! I especially liked the shown "pinch-off effeckt" and the explainations using th band-diagramm even if those two points weren't explained but just shown :) @ 3:11 The gateelectrode dosn't overlap the sourche/drain regions wich would lead to a not working device @ 3:14 it's correct
strictly transistor is a quantuum physics device, so we need to just keep in mind that in computers it works like switch electrically controlled, then some logic gates - ie AND OR elements which are consist of those "keys" -transistors. then some memory devices ie triggers are numbers of AND OR gates collections this all form registers memory and ALU (arithmetic logic unit) - main parts of every chip we have in our hands and in our homes))
Hello, i cannot find on internet and youtube, or in shazam, the true title of the music at the end. (Shazam shows things which are not this music) Thanks by adanvance if you know how to get it. Jacques.
Hi! Thank you very much for your comments. You can find a few videos more in my channel, fmgomezcampos. A video about the pn junction is coming very soon... Its release it's planned for the first days of May. I hope you like it.
Skip to 3:23 for what we all really want to see.
thanks captain
thanks captain
I love this video!! It's the perfect combo of intelligent discourse without getting into any of the real tough quantam physics, allowing layman people who work with MOSFETs to understand them at a level that doesn't require a PHD
I now realise how a MOSFET transistor works. SIMPLY PUT, A VOLTAGE AT THE GATE ALLOWS CURRENT TO FLOW BETWEEN THE SOURCE AND THE DRAIN. WICKED VIDEO THANKS.
This is best illustration of how transistor, works i have ever seen!
Extremely easy to understand thanks to this video. Great job!
Need more about every electronic component.
the video is great ;)
the background music is rly good
Its a well-crafted video. To provide that amount of clarity about mosfets in eight minutes takes some work. Well done.
This is an excellent video on how MOSFETs work. Thank you for putting it up here. Good Job, Universidad de Granada!
As a continuation of the explanation for the name MOSFET: The phrase Field Effect is what you get if you apply a gate voltage of the same polarity as the doping polarity of the substrate ( the big bottom material in the diagrams ) ; what occurs is a repelling of the electrical fields of the gate & substrate, which then allows a channel to be formed allowing for current flow.
This video was intended to be an introduction to the concept. The full understanding of the devices requires deep science and maths, of course. Thanks for commenting!
The info is cool but the music makes it so much cooler
Love the dance sketches at the end. Very cool!
She was wanting me to get up and dance with her lol
every once and a while I stumble across a really cool and well done video. Good job, thanks
Thank you for comming and sharing with me !
Thank one million !
This is one of the simplest easy to understand videos about transistors I've ever seen, I do wish they had shown how pnp transistors work in a bit more detail, although the video shows they are basically the same thing a solid state switch.
best explanation i have seen till now....good animation...
Great comment. The charge of the impurities should be also considered (they are not depicted in the schematics in 5:02, just the colour of the regions try to remind you the type of impurities in each area). In fact two PN junctions appear, giving as a result that charge distribution. PN junction is the topic of the video we are currently working on, so probably you'll understand the thing better when we release it. Thanks for commenting!
I like the 8-bit representation of the switch. Great animations!
Yes, it was intended as the very first step to approach the concept. Thanks for commenting!
BEST video... i understand the whole MOSFET thing with only this.
This is such an informative video! Well done!!
Well, it's just a matter of attitude, don't you think? :-) I'm grateful you liked. Thanks for commenting!
Yes. Now we are working on a video about pn junctions :-) In a few months it will be finished. Thanks for commenting.
@meedean Thank you for your comments! The credits track name is written in the credits. It's Discoparty, DJ Bouly.
Thank you for commenting! I'm glad you like it.
Thanks for commenting :-D Yes... the truth is that the 8-bit representation of the electrons moving in the circuit are supposed to be the members of the team who worked on the script ;-)
I really like this video, it explains everything very simply and I found that the way the MOSFET was introduced in the beginning of the video made it not intimidating. Also, the music throughout the video was very awesome and made the material more comfortable and enjoyable. Where can I find more videos like this?
FINALLY THIS MAKES SENSE AFTER A WEEK.
@DancingSpiderman Thank you! Well, yes, you are right, we could comment on a little bit the meaning of "Field Effect" in the video. Anyway, I hope the users would read your comment about it too, so thank you for the note. Thanks for commenting! :-)
May you live a long life Full of gladness and health . May all God's blessings descend upon you. May peace be within you may your heart be strong. May you find what you're seeking wherever you roam.
Great Video,
Voice reminds me of "Brienne of Tarth"
was wondering the same thing ahahha
she must be sexy as hell, no sarcasm
We'll have that into account in the next video. Thanks for the criticism!
Very instructive and concise! Definitely saved this video for future microelectronic reference.
Splendid. Phenomenal... I m so glad sir to have ur lectures seriously speechless.
1. Roughly speaking, the switch is controlled by the voltage in the gate. Depending on the value there, the switch would be on or off.
2. This is just the brick to build the house. In the last section of the video you can watch how a couple of MOSFETs would work as an inverter. Logic gates are obtained (AND, OR, NAND, NOR...) combining more MOSFETs. This is studied in digital electronics.
You can also have a look on my new video on pn junctions. Thanks!
finally a human explanation, awesome video thanks!
Thank you for the good animations on MOSFETs !
Hi! Well, the names of the contacts make sense if electrons go into the device by the source and are collected by the drain. Probably you are confused with the current direction. Since electrons are negative charges, the current would be in the opposite direction, from drain to source, as you may know. Thanks for commenting!
this and your p-n junction video are great! clear explanations of core concepts and well designed diagrams.
Thank you! Yes, I do have a very busy real world job, hahaha. Next one: the pn junction. I can't say when it is going to be finished, but thanks for your support :-)
Thanks! There would be soon another video about PN junction. I hope you like it!
Excellent video. Easy to follow and understand. Great music. Great graphics. Hope more is coming.
They are in the credits. Thanks for commenting!
A MOSFET is turned on and off based on the voltage of the gate electrode. Generally the gate electrode is controlled by another transistor. Large networks of transistors are built to form functional blocks such as registers (memory), latches, adders, multipliers, etc.
very useful video.....i have an exam tomorrow,,,,,,,its helping me a lot
Thank you for your comments. I have observed that the background music might be annoying when listening to the video with low quality speakers, but it seems to be fine when listening to using good ones or headphones. Probably this might help. Anyway I'm grateful for your comments.
Deseabamos hacer una película para que usted la viera gratis por internet y pudiera hacer su crítica constructiva correspondiente, pero nos salió un pequeño documental. La próxima vez mejoraremos en esto. Gracias por comentar.
Hi again! Well, there are many differences since they are different devices. Probably the most relevant one might be that the BJT carries current by every contact, meanwhile MOSFET has a current just between S and D. Gate in the latter controls the current with its voltage, but there's no current in that contact. But there are many other differences, of course.
Since BJT consist on two polarized pn junctions, you could watch our last video about pn junctions (browse my channel). I hope it helps.
thank you,it was soo clear and helpful
Thanks for commenting! :-)
Finally I understood MOSFET ... Thank you very very much :)
Great GREAT video! I am sure you have a very busy real world job, but please keep these up.
I find this video very misleading. At 5:44 the principle is absolutely wrong. Attaching a positive gate potential with regards to the source potential will not form a channel. The channel is formed because of the gate bulk voltage. In the case of an N channel transistor, the bulk is usually connected to ground. The channel is formed because you attach a positive potential to gate with regards to bulk. This will push majority holes out from the region under the gate, leaving there only minority electrons. That is how a channel is formed. Talking about VGS is misleading, the only reason why VGS is used is, because source and bulk are usually shorted.
The gate may have a certain voltage due to many different causes. For instance, it might be caused by processes where a signal is triggered (sensors), or it might be a logic gate with an ouput of 1 or 0 feeding the next logic gate...
When transistors are part of circuit, you could say that (in this case) the source and the drain are 'directly' connected to the circuit, playing a passive role.The gate is the input signal and determines the flow of current. The output is connected to the circuit (right before the source or right after the drain, depending on its function). The simplest function to look for is the invertor (NOT port).
great video. im an engineer at a fab and oh yea, we do make lots of cmos. very cool that you incorporated wafer cross-section images into the video btw.
génial ... vraiment génial .. j'ai toujours pensé que c'était difficile, il s'agit plutôt d'aussi simple que nous pouvons le réaliser ..!!
@ljay0778 Hi! most of the explanation in this video is based on N-CHANNEL MOSFET, so the positive voltage at the gate is right. I'm afraid you could be a bit misled because N-CHANNEL MOSFET has a channel in a p-type semiconductor (the inversion channel).
Liked it. The music actually helped.
Oh, great! Thanks for the feedback!
Hi! I don't think so. Electrons flow from the source to the drain (that's why the names). Nevertheless, since they have negative charge, the electrical current goes from drain to source.
The video is informative and fascinating. I love the song at the end as well. Thank you.
From which software have u created this great video...??
Best video to date. Thanks.
One of the best videos ive seen in my hoooleeee life NO LYING 🌚🌚
So weird and so good! Thanks.
I wish I had seen that video before the exam for prvious semester.
cimmik 😂
yes, so clear and simple... I love stuff like this
Oh beautiful. very good explanation.
Thanks for clearing that up. I'd like to know more about the differences between the BJT and the MOSFET...
No, an NMOS turns on when Vgs > Vt. Vgs is Vg - Vs, or the voltage between the gate and source terminals. A PMOS turns on when Vgs < Vt. Vt is positive for an NMOS and negative for a PMOS.
Hi! Base, collector and emitter are the contacts for the BJT (bipolar junction transistor), not the MOSFET ;-) Even there is a paralellism between them, they are different devices, is not about German.
@ljay0778 Hi again! where is the battery symbol drawn? In which time does it appear, or in which scene? I have checked out the video, but I can't find it :-) Thanks!
Is it possible to put mosfets in series in order to increase the source voltage? For example I have 5 mosfets rated at 450 volts. Can I put their sours and drains in series, so that I can increase the voltage up to for example 1200v?
But what turns on each of those switches and controls the order?
Love the video! Do you know what the name of the song at the end of the video is?
Very cool video, nice animations and graphic! And very easy to understand :P
Very instructive video, thank you!
Very nice video. Clear and to the point. What's the name of the credits track?
great video, learn many things from it... good work admin
This is fantastic !!! Do more of videos like this.
I'd like to ask a question: I have learned the three contacts of a transistor to be called "base", "collector" and "emitter", however this is in German. Is this the same as "Source", "Gate" and "Drain" (with base being the gate, collector being the source and drain being the emitter), or is there a difference?
Very impressive! I learned quite a bit of information about transistors here that I was never taught in any of my electronics courses. (We avoided transistors.) I was curious - what type of material is the insulating dielectric made of? Most time it is silica, but is it crystalline or amorphous? I'm guessing it's amorphous silica (glass), as using crystalline silica would cause strange problems.
Nice explainations! I especially liked the shown "pinch-off effeckt" and the explainations using th band-diagramm even if those two points weren't explained but just shown :)
@ 3:11 The gateelectrode dosn't overlap the sourche/drain regions wich would lead to a not working device @ 3:14 it's correct
Ok, I'll take that into account for future videos. Thanks!
awesome video understand the concept clearly thanks
very very good. thank u very much for easy explanation.
Hahaha, thank you! The electrons are suposed to be a cartoon of the members of the team!
next time try making the intro shorter than 10 s
Great animation and great explanation !!
Thank you. Clear and concise. :)
strictly transistor is a quantuum physics device, so we need to just keep in mind that in computers it works like switch electrically controlled, then some logic gates - ie AND OR elements which are consist of those "keys" -transistors. then some memory devices ie triggers are numbers of AND OR gates collections this all form registers memory and ALU (arithmetic logic unit) - main parts of every chip we have in our hands and in our homes))
Beautiful. Thank you.
Hello, i cannot find on internet and youtube, or in shazam, the true title of the music at the end. (Shazam shows things which are not this music) Thanks by adanvance if you know how to get it. Jacques.
@josepaul2000 Hi! All the information is in the credits. Thanks for commenting.
Sorry dont mean to complain just wish the music was down a little lower so I can understand what the narrator is saying
simply amazing, really appreciate the work
wonderful background music
"There are no Electrons" Amdahl is a fictionalized story in book form that explains this question with simplicity and clarity.
Lots of cool info - thanks!
Nice! i like the music to, who are the artists?
Hi! Thank you very much for your comments. You can find a few videos more in my channel, fmgomezcampos. A video about the pn junction is coming very soon... Its release it's planned for the first days of May. I hope you like it.
This is a fantastic video.