MOSFET - Enhancement Type MOSFET Explained (Construction, Working and Characteristics Explained)

In this video, the Enhancement-Type MOSFET, its Construction, Working and, drain and transfer Characteristics have been explained.
By watching this video you will learn the following topics.
0:24 Construction of Enhancement MOSFET
1:25 Working of Enhancement MOSFET and pinch-off Condition
8:08 Drain or Output Characteristic of Enhancement MOSFET
8:31 Different Regions of Operation (Saturation, Cut-off and Linear Region)
10:03 Transfer Characteristics of Enhancement MOSFET
11:03 p-channel Enhancement-Type MOSFET
12:54 Electronic Symbols of n-channel and p-channel Enhancement MOSFET
Enhancement-Type MOSFET?
The enhancement type MOSFET is similar to the Depletion-type MOSFET. It has three terminals (Drain, Gate, and Source)
But there is no conducting path/channel between the drain and the source terminal.
But by applying the control voltage between the gate and the source terminal, the channel is formed between the drain and the source terminal.
The required voltage to form this channel is known as the threshold voltage. And once the channel is formed then by applying the voltage Vds, current can flow through the device.
So, when there is no control voltage, then Enhancement MOSFET remains OFF.
And once the channel if formed then as voltage Vds increases, the current Id also increases.
But at particular voltage Vds (sat), the drain current Id gets saturated.
And it happens when the pinch-off condition occurs.
In the video, the pinch-off condition is explained in detail.
Different Regions of Operation:
The MOSFET can be operated in three regions.
1) Saturation or Active Region
2) Linear or Ohmic Region
3) Cut-off Region
The link for the other useful videos related to FET:
1) Introduction to Field Effect Transistor
• What is Field Effect T...
2) JFET Construction and Working Explained
• JFET: Construction and...
3) JFET Transfer Characteristics
• JFET Transfer Characte...
4) Depletion-Type MOSFET
• MOSFET- Depletion Type...
This video will be helpful to all the students of science and engineering in understanding the construction and working of Enhancement MOSFET.
The link for the other useful videos related to FET:
1) Introduction to Field Effect Transistor
• What is Field Effect T...
2) JFET Construction and Working Explained
• JFET: Construction and...
3) JFET Transfer Characteristics
• JFET Transfer Characte...
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[@ALLABOUTELECTRONICS]

The Timestamps for the different topics covered in the video: 0:24 Construction of Enhancement MOSFET 1:25 Working of Enhancement MOSFET and pinch-off Condition 8:08 Drain or Output Characteristic of Enhancement MOSFET 8:31 Different Regions of Operation (Saturation, Cut-off and Linear Region) 10:03 Transfer Characteristics of Enhancement MOSFET 11:03 p-channel Enhancement-Type MOSFET 12:54 Electronic Symbols of n-channel and p-channel Enhancement MOSFET

[@hannanhub1717]

THANK YOU VERY MUCH

[@adityaharlalka9173]

Video on IGBT please

[@vishnuchevuru5233]

Can u pls do a video on mosfet oxide tunneling

[@JayaPrakash-zk5ep]

😘

[@gurjotsingh5924]

thanks,studying one night before end sem

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That's today for me😁

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Me 2 😂😂

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one day before exam ;D

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Today me

[@leondaz]

same

[@Derlis_Jara]

I'm so glad I found your channel my friend..!! you are great at explaining this subjects. Thanks again.. greatings from Argentina..!!

[@galalon2417]

How indians explain things better. You make it a piece of cake, easy. Thank you indians. (Your english style is funny)

[@shaileshaanand]

thank you, best concise explanation

[@muhammadfaizanikram]

You explain well. But only thing you don't talk about is equations. Explain them too

[@mayurshah9131]

Very well explained

[@omarhelal3772]

great explanation thank you very much

[@damienang7863]

Thank you bro it really helped me

[@auhlulu3816]

Kindly next video explain slowly. I'm interested to listen to add knowledge how the transistor works. Thank George

[@ramonluque1850]

Thanks for the subtitles

[@adityaharlalka9173]

Video on IGBT

[@saitejaemmadi8652]

U r voice is resounding

[@klaus9687]

why do u never explain the concep fully?

[@bangaruraj5841]

Please make a video on IGBT

[@abhijithas9976]

Sir transconductance of mosfet directly. Proportional to drain current Please explain

[@vivekkumar-ic2ev]

Nice 👍🏻👍🏻

[@dannyjensen4954]

Excellent job. Thanks.

[@muhibullah7512]

Sir from 12:31 to 12:36 you say that if Vgs is greater then Vt then the mosfet will operate in cutt off region...No Sir if Vgs is less then Vt then it will operate in cutt off region I'm I right sir.........plzzzzz answer

[@ALLABOUTELECTRONICS]

If you closely observe, I am referring to P-type MOSFET. For, p-type MOSFET, Vgs will be negative. What you are saying is true for N-type MOSFET. I hope it will clear your doubt.

[@2goku272]

4:30 : Excuse me Sir, why both PN junctions are reverse biased? Thank You

[@ALLABOUTELECTRONICS]

The lower pn junction will remain unbiased if substrate is at the same potential as source.

[@savanrathod6021]

What abt the third case when Vds

[@md.razaulkarimbappy4600]

Sir....do you cover BJT and JEFT frequency response... Or...can you make a playlist for this topic...? If you can do...then it will be very helpful for me...

[@ALLABOUTELECTRONICS]

It will be updated soon in the playlist.

[@dl0ading]

Sir may i ask you something, do you prefer to read electronics books by Thomas FLOYD ?

[@littlechamp1293]

Can you please let me know what the inversion layer is?

[@ALLABOUTELECTRONICS]

Inversion layer is basically a layer of electrons which is formed between the two n- type regions. Through this inversion layer, we are getting a flow of current between drain and source terminal.

[@littlechamp1293]

@@ALLABOUTELECTRONICS thank you

[@mohammedsohail95]

Sir, electrons are attracted towards gate because their is a insulated layer between gate and body.please answer my question

[@siddheshpatil5170]

Imagine when you take two magnets. One under the table and one above the table. They both would still attract to each other. Thats because of Magnetic field. And here, its because of electromagnetic field.

[@chandanjain1728]

thank you very much please make ideo on cmos inverter

[@electronicsthedeep7122]

Awesome

[@butuanorientalbirds1467]

Subtitle blocks the diagram

[@ALLABOUTELECTRONICS]

If you are watching on the desktop, then you can drag the subtitles anywhere on the screen.

[@Mr_camerawallah]

End sem se 4 ghante phle ...m kanhaiya voh Bhaiya 😢

[@sushant4074]

❤❤❤❤❤❤❤❤

[@Raj3486]

Vdg = Vgs - Vds Is little confusing for me can you please explain a bit... Your lectures are really very simple and easy to understand... Thanks for educating 🙏. As per me applying KVL in loop DGSD: Vdg + Vgs - Vsd = 0 Vdg = -Vgs - Vds Please correct me where am I going wrong

[@ALLABOUTELECTRONICS]

Vdg = Vd - Vg, a difference between drain and gate. Where, Vd ang Vg are the voltage at the drain and gate terminal with respect to ground. If source terminal is grounded, then it can be written as, Vds - Vgs.

[@Raj3486]

@@ALLABOUTELECTRONICS Thank you so much 🙏

[@masseffect2220]

What is the reference you teach us from?

[@ALLABOUTELECTRONICS]

You can refer, Electronic Devices And Circuits Theory By Robert L. Boylestad, Louis Nashelsky

[@tanjiro3285]

💗

[@akasharora8019]

Sir please notes provide kardo 🙏

[@tusharwaghmare6673]

Sir hindi videos plz

[@prashiddharegmi9060]

Hehe.

[@_RIDDHICHIPADE]

how both P-N junctions are reversed bias??

[@harsha3360]

4:32 how both terminals are reverse biased?

[@ulasfiliz759]

You sir just saved my electronics exam, thank you so much.

[@kumarsachin3111]

Studying 2 hours before the mid sem 😅

[@tomc642]

Again, a nice conceptual explanation of a difficult subject. The enhancement type NFET is the most important transistor in IC design. I look at pinchoff as being due to opposing electric fields under the gate at the drain.

[@kowsalyanandini6207]

Hi sir, how both depletion region formed between source and substrate then drain and substrate are reverse biased.since both subtrate and source are give negative supply

[@hemanthmadhira4667]

One night before test

[@bullfinch5715]

4:37, How both junctions are reverse biased?

[@ALLABOUTELECTRONICS]

When Vds is applied, the drain is at a higher potential than the source and substrate. so, that PN junction will be reversed biased. On the source side, since both substrate and source are at the same potential, that PN junction is also reversed biased. I hope it will clear your doubt.

[@bullfinch5715]

@@ALLABOUTELECTRONICS upper PN junction understood. But lower Junction , both source and substrate are at same potential right.

[@ALLABOUTELECTRONICS]

Yes, when both are the same potential then it is unbiased. But still, there will be a depletion region at the PN junction. Of course, at the drain side, the depletion region will be wider.

[@Vaish-es9rk]

Sir it's not clear about source side Will a junction be in reverse bias when both p and n are at same potential also ??​@@ALLABOUTELECTRONICS

[@Vaish-es9rk]

Please explain this sir!!

[@elias4eve]

Great respect for your knowledge and insight. I benefitted from all your videos and please keep educating and you need our support. Thank you

[@jebilchacko6740]

Can you add a video on MOSFET as an amplifier?

[@AbhijeetKumar-pk8tg]

how is the source and substrate reversed biased because source is at same potential to that of substrate

[@ALLABOUTELECTRONICS]

Yes, true. It will remain unbiased when source and substrate are at the same potential.

[@Crazyforelectronics]

how direction of arrow is decided

[@bishalghoshb3412]

Pls upload more video

[@bmh4013]

Why cant our teacher explain like this, they make it so confusing.

[@Divya_2121]

New subscriber

[@donajoseph2591]

Thank you sir.....well explained.... Hope you will upload such diagrammatic representation for every topics in electronics... especially based on MSc topics

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Holy crap, this video save me

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Sir, Eco is there in video's please make it stable.. 👍🏻🙏🏻

[@VersatileAnthem]

great explanation go ahead brother.

[@manasawasthi4957]

I am studying this before 2 hr of exam

[@rafirahimi9327]

Nice and compact. Thankyou sir!

[@muhibullah7512]

Yes sir you are right....

[@topquark22]

"Source Drain" naming is very confusing. I guess it refers to electron flow, not conventional current flow. I wish they had stuck to conventional current because the arrow is reversed and it's hard to remember whether the source or the drain is the positive or negative terminal.

[@nookme]

superb tutorial dude....i'm count on you in my end exam...THANK YOUUUUU ...

[@King02122]

❤

[@balajidasar396]

Sir plz make videos on bjt as switch and amplifier and feedback amplifier sir. Thank u 🙏🙏

[@flaviomenezes4992]

I have a question: Why doesn't an inversion layer form on the channel of a depletion type mosfet when we polarize its gate like it were an enhancement one?

[@jitendradas3776]

Thank you so much sir

[@myhobbies1288]

This lecture was not clear to me as far as Vds, Vgs were explained.

[@shivtejkate860]

Nice Explanation, firstly I had many doubt in this chapter , very helpful for me. thanks

[@Vaish-es9rk]

4:25 How are both pn junctions reverse biased sir ? And what is the poalrity of source terminal here ! Because it is connected to ground and also to negative end of battery and substrate is also connected in similar manner !!!! Kindly explain this sir !!!

[@Divya_2121]

Lots of Information, with Clear explanation Very useful 👍thank you sir

[@ravinderniharika6105]

Thank u sir Sir plz explain about ujt also sir

[@amruthark9071]

Good explanation. Thank you Sir.

[@EE_PallaviRai_]

perfect explanation ... best I found till now

[@jebilchacko6740]

Can you please include videos about SMPS?!

[@rounaksen1357]

wow!..very clear..Thank You sir

[@tashi2009]

thank you. . you helped me to clear my doubt

[@sacrajah]

Best explaination. Thank you..

[@vikramadityasingh6353]

well explaind,thankyou

[@varinderdhillon104]

Nice ! Thank you so much !

[@sumantadky5603]

Very well explained

[@tiajakhar2649]

Ty sir❤

[@sunilkaushikshishpal]

Sir..If the question is - write about p-channel MOSFET or if the question is -write about n-channel MOSFET ? Than what MOSFET should we write about ? Becoz both of these types exists in both DE MOSFET as well as in EN MOSFET ? Pls enlighten.

[@nissanbiswas8432]

Here Enhancement N-type MOSFET Gate biasing connection wrong. Gate voltage will be positive.

[@BiplaBhatt]

This mosfet schematic will not work in real. To have gate control you need to overlap gate electrode with some part of source and drain, and without that there's no gate control so mosfet won't work at all. Please correct!

[@nagajinpatel6990]

Mosfet stp20nm60 the number is not found, then which number should be applied

[@rukshanfdoable]

In 5.49 Why Vgd is not expressed as Vds-Vgs You writtens as Vgs- Vds

[@ALLABOUTELECTRONICS]

Vgd is a voltage difference between gate and drain. Its Vg - Vd or Vgs - Vds. If you want to write Vdg then it is Vd - Vg or Vds - Vgs. I hope, it will clear your doubt.

[@Ayushkumar-vr5rl]

thank u very much... keep uploading videos... lots of blessings to u

[@seenivasanseenu439]

Thank u VeRy Much i Cleared My EDC Subject........😇😇😇

[@heyviewers103]

Go ahead till you succeed n also take us with your such a good explanation

[@abhishekagrawal542]

Sir in saturation region there is no current is flowing from drain to source then how MOSFET is work as amplifier please explain

[@ALLABOUTELECTRONICS]

In saturation, actually the current is almost constant. On top of the biasing, when the small signal is applied to the MOSFET then it is getting amplified. I have already explained that in the separate video. Please check this video: kzbin.info/www/bejne/q6Wlg4qBaaygo6c Further, you can check the MOSFET playlist for more information. Please go to the playlist section of the channel, you will get it.

[@abhishekagrawal542]

@@ALLABOUTELECTRONICS thanks

[@dhanujabpillai3964]

Nice class sir. Plz take transistors class also

[@ALLABOUTELECTRONICS]

Yes, it will be started from next week onwards.

[@dhanujabpillai3964]

Thank you sir

[@dipakpatil3529]

Sir please make video on P channel MOSFET

[@harishsankar8534]

Could you post video on explaining IGBT?

[@ujan_saheli]

2:20

[@mogilisiva4951]

Sir will make vedios on pseudo nmos inverter

[@TheCrift]

Thank you so much! Best explanaion ever, incredible!

[@VincentFischer]

You should really step up your mic game

[@ph0non]

Couldn't understand a single sentence. :|

[@jananisubash6377]

Where can I get the transcript of this lecture?

[@yesaswiniguduru2844]

too gud xplanation but ur going a bit fast

[@arunpandi22356]

Excellent video sir thanks

[@jyotiprakashmohanta1523]

😍👍