What is Field Effect Transistor (FET)? || Differences between BJT and FET || Types of FET
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- Опубликовано: 17 янв 2019
- In this video, the brief introduction to the Field Effect Transistor (FET) has been given and the different types of FETs are discussed.
By watching this video, you will learn the following topics:
0:20 What is Field Effect Transistor (FET)?
1:25 Differences between BJT and FET
3:18 Types of FET
What is Field Effect Transistor (FET)?
The FET is a terminal device that uses an electric field to control the current flowing through the device.
The three terminals of the FET are known as Gate, Drain, and Source.
It is a voltage controlled device, where the input voltage controls the output current.
Application of FETs:
1) Amplifier
2) Oscillator
3) Analog Switch
4) Integrated Circuits
5) Buffer Amplifiers
Differences between the BJT and FET :
1) The FET is a unipolar device, while BJT is a bipolar device
2) The input impedance of FET is very high compared to BJT
3) The power consumption in FET is less than BJT
4) In size, the FETs are smaller than BJT
5) Thermally, FETs are more stable than BJT
Types of FET:
There are many types of FETs. But mainly there are two types of FET:
1) JFET (Junction Field Effect Transistor)
1.1 n-channel JFET
1.2 p-channel JFET
2) IG-FET (Insulated Gate Field Effect Transistor)
MOSFET (Metal Oxide Semiconductor Field Effect Transistor) is the most common type of IG-FET, where a layer of SiO2 is used as an insulating layer to insulate the gate from the channel.
The MOSFET can be further classified into
2.1 Depletion-type MOSFET (n-channel and p-channel)
2.2 Enhancement-Type MOSFET (n-channel and p-channel)
This video will be helpful to all the students of science and engineering in understanding what is FET and the different types of FET.
#FET
#JFET
#MOSFET
#TypesofFET
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The timestamps for the different topics covered in the video:
0:20 What is Field Effect Transistor (FET)?
1:25 Differences between BJT and FET
3:18 Types of FET
If your channel have any id in any social media to contact you .Clearing some doubt about electronics .
Hindi may video banaw
Please do vedios on bjt
Thanks for keeping timestamps
I just wanted to know the current equation of FET.
thank you so so much sir. gratitude can't be expressed through just words...
Charge phone with drum beat maker app
Another fantastic lecture. These videos are getting me through my university course. Thank you for sharing your knowledge and teaching skills.
Interesting fact. Notice the metal part of the FET shown at the beginning of the video. It is used for heat dissipation. It is screwed to a PCB board using the hole and then a small amount of heat gel (heat sink compound) is applied between the metal part and the PCB board.
Very good explanation. Everything is understandable (thanks to subtitles). I'm not sure 100% I understood all concepts but thanks to your video, i could sense I understand more things about FET (especially JFET, I would watch the part about MOSFET later)
Thank you for making videos with simple and clear explanations!
im "white" and i understood him perfect no subtitles....
bit of a weird "compliment"
🙏 thank you for this video! It helped me so much for my presentation.
you are legend of electronics at least at the level of topic you teach.
thank you so much for making this video, it is very easy to follow im so glad i found this
Thanks for making it clear in a very short lecture.
Amazing video, thank you so much!
The beginning of the new topic is awesome sir❤
It was too easily understandable. Thank you very much 💕
best explanation.
And you are doing a great job.
Thankyou so much.
Best lectures and helpful for engineering students👍👍👍❤️❤️🙏🙏
Wow! It's so easy to understand why the use of FETs has become so widespread. Voltage control consumes remarkably less power than current control !
Thank you, good explanation
You make electronics very understandable.
Frank
Frank Reiser Video/Audio Service
Caldwell, NJ
Thanks for helping us!
Good morning sir, best helpful video Sir, very-very thanks sir.
This was helpful. Thank you.
Thnkuuu so much sir it is so helpful in clear our doubts
thank you sir for saving my life!!!
Awesome explaination
Very precise information.......Well done sir....
Super explanation sir
Thank you so much sir
Nice explanation. Thank you sir.
It will be of much help if you can provide PDF file of the lecture in description. Thank you once again
very good content ...thank you very much
Are Bhai mechanical ka banda hu ..but electronics Mai bhi interest badhna chalu hua h ty for such videos really appreciate your knowledge and hardwork
It is a very good lecture sir thank you
Thanks sir 🌝🌝🌝 you did an amazing job 😀
Awesome bro, Thanks a lot.
Clearly Explained
Tq it was very good and useful to me
a brilliant video
Just Superb
Very well explained sir.
Now that I m gaining confidence of passing in my Ec just bcoz of ur teaching sir thank you... 🙏🙏
Good luck.
Nyc explained sir
Thanks a lot sir 🙏😊
Fascinating explanation ..But could you please make a video on threshold voltage. there are numerous video on it but not that much effective likewise your explanation.
Good explanation
Very helpful video sir......
I am your new subscriber
Thank you sir
It is very helpful for understanding the concepts ..thanks
Nice explanation
Thanks sir..
Super lecture sir
Thank you sirr
very good video
Well explain
Sir.. thank uuuu
Superb
Best ❤❤❤❤❤❤
Super sir
I just start Microeletronic circuit course(EE2115). Wish I can get A in this course
Tq sir
Plz bro put a video about scr and ujt as soon as possible
❣️❣️❣️
Make video on power amplifier
Sir can I know what is meaning of drain and gate and purpose?
Plz give reply as early as possible
Good explanation sir
Tq u so much sir👏
Teri aawaz me mangta hai logo ko
Kasam se 2 lakh subscribers bash jayenge
Your are teaching like anyone reading a book
Could you also do a video playlist discussing about BJTs.
Yes, I am planning to cover it very soon.
@@ALLABOUTELECTRONICS Thanks. I really appreciat it. Good videos and I lear a lot here
00:16 The field effect transistor (FET) is a three-terminal device that uses electric field to control current flow.
01:25 Field effect transistor (FET) is a voltage control device, while Bipolar Junction Transistor (BJT) is a current-controlled device.
02:22 BJTs are commonly used as amplifiers and switches, while FETs are preferred for their high input impedance, smaller size, and lower power consumption.
03:23 There are two types of FETs: JFET and IG-FET (or MOSFET).
04:25 The JFET or junction field effect transistor is a type of field effect transistor.
05:27 There are two types of JFET - n-channel and p-channel
06:29 There are two types of MOSFETs: depletion type and enhancement type.
07:31 FETs are further classified as n-channel or p-channel MOSFETs
Field effect transistor. Drain to source. Gate to source controls.lower power consumption. Two types
Sir
In FET amplifiers
In which region should it be operated
Saturation region or ohmic region
It is used in the saturation region. The thing is in FET the flat region is called saturation while in BJT it is called active region. But in both cases, where the I vs V curve is flat, that region is used for the amplification.
@@ALLABOUTELECTRONICS thank you sir
Can. You please give the link where you've explained about cmos and finfet
It is yet to be covered on the channel . I haven't made a videos on them yet.
Soon it will be covered.
Okay... Thanks anyways 😊😊
@@ALLABOUTELECTRONICS sir actually I have my exams in few days and I don't have any notes for that particular topic... Can you recommend me from where should I study about cmos and finfet from??
Hello!
Maybe someone can help me figuring out an issue I have: I'm simulating a gain stage for a guitar pedal using a J201 n-channel FET. The dataset reports the Idss (which should be the saturation current when Vgs=0) as
Thanks! Cool lecture! Why do you sound like a bot tho?
Why silicon oxide is used for isolation?
The silicon dioxide acts as a insulating layer. And the thing is it is easy to deposit on silicon wafer during the fabrication.
sir which book you are following?
You can follow electronic devices and circuit theory by Robert Boylestad.
Sir ho sake to hindi me bi FET par video bnao
Your comments of "FET is a unipolar device, while BJT is a bipolar device" and FETs being "Either free electron or Holes" and BJT being "both free electrons or holes" is unclear.
Can you give some examples and clarification of the distinction you are making. Thank you in advance,
If you take the case of BJT (either NPN or PNP), here the charge carriers are both electrons and holes. (holes in P region and electrons in N region, as they are the majority carriers in the respective regions).
So, we get current in BJT, it is due to both electrons and holes. That's why it is called a bipolar device.
On the other end, in the FET, the current is due to the flow of charge carrier through the channel.
The channel is either p-type or n-type. So, the current is either due to electrons or holes.
That's why is called unipolar device.
I hope it will clear your doubt.
In depletion mode holes I'll be major carrier and in forward mode electrons 'll be major carrier
WHAT IS MEANT BY EVEN CHANNEL AT 06.35
What I said is, it can deplete or enhance the number of charge carriers in the given channel.
Just give me the current equation of FET.
Sir please give notes
Conduction due to elecrtons in one direction automatically mean the conduction of holes in the opposite direction.. Then how come the definition of a unipolar device comes into existence?
Unlike, BJT or diode, which involves both p-type and n-type region during the flow of current, Field effect transistors have dedicated channel for the conduction. (either n-type channel or p-type channel)
So, the major contributing carrier in the flow of current is either electrons or holes.
And hence it is called as unipolar device.
I hope it will clear your doubt.
Sir,
your explanation is good, but you seem to be speaking very very fast, which makes it hard to grasp what you say.
Bro chill on the robot voice
Real
tgr diagrams are not clear because of scrolling of names in the down
It's a subtitles. You can turn off the subtitles/ CC in the video settings.
What the hell is this...
TAKE THE MIC OUT OF YOUR THROAT!
It's difficult to understand you with the accent.
Sorry .Too difficult to translate .
Not understandable for European, because of accent.
Jan Wróbel LoL pretty sure it’s your level of English, nothing to do with his accent.
i'm from a European country, i also have a little hard time with his accent BUT there are subtitles, and it helps a lot, and i understand all. I think the subtitles were written manually and not automatically. I really understood all
@@0711floflo they are not hand written, they are auto generated by youtube.
@@chinnichandhana9085 They're manually written. Not auto generated.
If you're going to offer this video in English, please have someone who speak English fluently give it. Sheesh...
The video is very explaining alright, just a shame that your English pronunciation is terrible... sorry. I know this is a common problem in many Indian videos. Luckily you subtitled it.