What is a JFET and how does it work?

Table of Contents
0:00 Introduction
0:34 Parts of a JFET
0:50 JFET Symbol
1:20 How a JFET is built
1:50 Review of a PN Junction
2:33 Internal construction and function of a JFET
4:56 Comparison between JFET and MOSFET
5:22 Summary

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[jerrylarson]

This was a great summary and visualization. I literally finished my lecture notes and came here for a clearer understanding

[Carlosram]

i wish i had this videos as reference or help when i was in collage, there were a lot of student that couldnt understand without visuals, we only had old books and lectures. I hope the youth find them useful. thanks

[JonDeth]

*Your videos save me a lot of time rather than reviewing my school notes from 10 to 13 years ago. I have literally 100 pages for just about every device and every theory.* I will still have to dig out formulas, but that's trivial compared to brainstorming a new device or invention and what will be the best IC or semiconductor for the project.

[suryaedits]

Excellent video for JFET superb....
We need characteristics also kindly upload soon...

[ricardoloya]

Great JFET channel N/channel P explanation! Thanks

[fabianolivera]

Congratulations!, excellent didactic images! I will recommend it to my students.

[Turco]

Even for someone like me with no prior electronics training or knowledge, this was easy to grasp. I first learned about Boba Fett, then MOSFET and now JFET!

[mochisol]

i have an exam soon on transistors and fets, thank you for this!

[burakg]

@CircuitBread many thx for the content. What I don't understand fully yet, is how the current increases with increasing source voltage, although the channel gets narrower.

[jameskidd]

Electron world in few words and few minutes "bravo"

[kiranshyam]

excellent
have one doubt sir if we provide negative gate bias what will happen at the output side

[igorbondarev]

If I connect source of N-channel JFET to the ground and drain to +9V and then apply 4.5V to the gate, then is the transistor fully closed because PN junction gate-drain is reverse biased, or is it fully open and burned because of too high forward voltage at PN junction gate-source?
I don't understand JFETs

[Helios_]

But are holes just the absence of electrons.
Doesn't that mean, when there are holes moving electrons are also moving?

[nomann]

At 4:18 why deplation region is increased? explanation is not clear

[GeoffryGifari]

are there cases when BJT is preferable over FETs?

[MollHyman]

Miller Jeffrey Johnson Scott Rodriguez Kenneth

[jask]

Our instructor should watch this video on how to teach students... 6 minutes instead of a couple of hours of messed up material