What is Field Effect Transistor (FET)? || Differences between BJT and FET || Types of FET

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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ALL ABOUT ELECTRONICS : 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
Dez Briel : Thank you, good explanation
Stomp : Another fantastic lecture. These videos are getting me through my university course. Thank you for sharing your knowledge and teaching skills.
0711floflo : 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!
Abhiram Anne : 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.

FET종류와 기호 이해 신바람전자DIY

전자회로 기초 강좌
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WIFI, CAN, Bluetooth, IR 등 통신 응용
권영군 : 교수님 감사 합니다.

[전기전자 강의] 트랜지스터 10. 트랜지스터의 분류와 FET ( JFET, MOSFET ) 회로기호의 완전정복을 위한 몇가지 지침들.

*** 21:21~21:47 N채널과 P 채널이 바뀌었습니다***트랜지스터의 회로기호, 특히 FET( JFET, MOSFET )는 동작이해도 어려운 판에 회로기호는 더더욱 산스크리트어를 방불할 정도로 복잡난해 합니다. 어떻게 하면 이를 직감적으로, 보자마자, 쌈박하게 어떤 FET인지 알수 있는 지침들은 없을까요? 약간은 방편적이지만, 이해를 위한 인위적 원칙들을 추출해 보도록 하겠습니다.
김창현 : 안녕하세요 고급물리학 수강중인 고등학생입니다. FET에 대해 주제탐구 하는 과정에 있어서 교수님의 영상이 정말 큰 도움이 되었습니다! 대학가서도 자주 찾아뵙겠습니다! 좋은 영상 많이 올려주시고 항상 행복한 하루 되시길 바랍니다~~
뮤직뮤직 : 강의 감사합니다 ! 정말 쉽게 가르쳐주시네요 ㅎ
Jae Seok Lee : 잘 보고 있습니다.
완전 쉽게 가르쳐주셔서 배우기도 쉽고요~
이런 강의를 무료로 볼 수 있다니 정말 감사합니다..
이재원 : 강의가 너무 좋네요 왜 학생때 이런게 없었는지 ㅠㅠ
1111 : 진짜 너무 유용하네요 !!

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