Zener diode & Zener breakdown | Class 12 (India) | Physics | Khan Academy
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- Опубліковано 8 вер 2024
- In this video let's explore what Zener diodes are and Zener breakdown.
Learn the next topic here --www.khanacadem...
Class 12 Semiconductors: We cannot imagine our life without computers today. But what makes a computer tick? What's making this technology grow at such an exponential rate? It's all due to semiconductors. As unbelievable as that might sound, altering the properties of semiconductors allows us to build these computers. In this topic, we will explore the world of semiconductors. It's a journey from what semiconductors are all the way to creating building blocks of these computers.
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Created by Mahesh Shenoy
I don't know why...I wanna name him MR.SKYROCKET..great explanation bro!
TRUEEEE
🙌🔥
Thanks a lot, for explaining so well
I've been looking through many videos to clear some misconceptions . Now I'm on cloud nine 😇
i'm student i don't have that much money to donate but in future i will came back to donate you thats my promise!
Thank you for explanation and can you please make indian engineering video for basic electronics
Did you keep your promise?
A playlist on quantum mechanics plz 😭..... I'm asking because your explanations are fabulous....
Exactly... we need.. 🙏
yes please
Ohh man, you're genius it's really fun to know more stuff when you explain it.
I would like to voluntarily donate some money to mr. Mahesh shenoy, is there any way i can do that? I am a parent.
Thanks a lot for this wonderful comment. It made my day :-). Yes you can donate to Khan academy from the link below.
www.khanacademy.org/donate
I love Mahesh and Ram sir. They both helped me to clear Board exams and olympiads with ease.
😢😢@@KhanAcademyIndiaEnglish
U can do that in his own channel float head physics
Amazing explanation. Thank you so much for your time.
I am preparing for neet and your videos are clearing all my doubts in semiconductors!! Thank you so much buddy!❤️
How did it go?
This is the best explanation ever given by any sir or mentor..u r the best thanks a lott
Great explanation. Arigatou Sensei ❤️👍
Sir ,tunneling 🤯🤯🤯 please make a separate video on it.huge fan🤑
real dude
Great demonstration,
everything was so smooth.
I am in awe. Thank u so much
God, that is so clear than the tens of websites I read
Can i get any source of where these things are thoroughly explained with much more details? The physical interpretation surely feels surreal.
Superb👌👏👏👏👏👏👏👏👏🙋♀️
No other channel in the you tube can explain better than you sir . Thank you so soooo much
Sir,
Really fantastic
Tq very much sir very extraordinary explanation🎉
Thanks. I am looking for this for long time ......
This is the best explanation of the effects i have come across. Thanks!
Truly amazing !
Thank u very much Khan academy !
great explanation thank you very much.
Amazing explanation
Way better than my teacher in allen
💀💀
Great explanation
Fabulous
No one can explain like him😃
You are a great teacher.
❤ Amazing explanation ❤
Sir I have a doubt
In Zener diodes, there is a very strong current flowing in the depletion region (as the depletion region is very small)
1. So the strong current in the depletion region is not caused by the voltage that is being supplied to it, right?
2. What is the purpose of reverse biasing it? Why not forward biasing? (It must conduct electricity very heavily, right? Because of an already small depletion region which is created by forward biasing, and if we dope it now, it will conduct much more)
3. Why should we even bias the Zener diode, if the current caused in the depletion region is not due to the voltage supplied, and removing the voltage supply (stopping reverse bias) will only aid in the process, since the reverse bias is causing the depletion region to become bigger, and if remove the voltage supply, won't the depletion region become smaller, and hence a much stronger current will flow through it. (Because lesser the depletion region, more thecurrent flowing through the depletion region, right?)
i have roughly read this comment and have to say that, we dont want high currents passing by forward biasing, we have conductors for that
Tq
Thank you very much for your explanation
one question?
If the field of the discharge region in the zener diode is stronger than the normal (pn) diode, then why do we have only 0.7 V potential drop in the direct bias of both diodes
Zener diode field is stronger so we have to apply more voltage in forward bias to overcome it
Great Analogies! Thankyou SIr Mahesh!
Greatest one..............,👌👌👌👌👌👌👌👌👌👌👌👌👌👌👌
awesome, the quantum tunneling part was well handled
Really good explanation. Looking forward to more videos.
Excellent teaching
Thankyou so much😇
Bruh... the graphics are so pretty... love it
Simply awesome😊
@Khan Academy India - English why did you say the probability of a free electron knocking off another bound electron is less? If the width of depletion layer is less, then the ions will be more in that space( as also see in the diagram above) or will be tightly packed, so probability should be more....??
The contributing factor here is the number of silicone atoms ,, number of p and b atoms are very low as compared to silicone,,,,
P.s. --in zener diode number of doped atoms per unit volume is more ,, but the structure is same they are not tightly packed in the second scenario.
Sir you explained great but please tell next time " Why small width of zener diode gives high electric field ? " with respect to V = fE * fr.
amazing job
Awesome
Amazing explanation 👏🎉
Sir,
Is it depletion layer is smaller then tunneling takes place and if depletion layer is bigger then tunneling won’t takes place?
Great explanation....
Superb
Thank you!😊😊😊😊😊😊😊
Do electron and hole pairs develop outside the depletion region
I know it's late still - They do but they instantly recombine.
Yes recombination of electron hole pair takes place
Thanks bro
Sir won’t the glowing electron at 6:30 just REPLACE the electron which you said is DISPLACED from its position ?
As we know when 2 objects of the same mass collide elastically and one of them is at rest, the their velocities get swapped.
Here the stationary object is under the influence of a force(Lies in Si valence band) hence it should further lower its chance of just escaping out from the stable octet, and even if it does, the approaching glowing electron must readily replace it under the pretext of completing the octet.
If what I argue is true then there should be no extra current generated in the depletion region...
Is the current in RB not affected by doping? (The saturated current)
I m just sad i didn't come across this earlier
Why this avalanche effect and zener breakdown occur in forward bias
sir plzzzz can you explain photo diodes
If the current would exist above I (max) what would happen?
im scared that i'll fall in love with physics and eventually will wants to be a physicist then a doctor 😢jkk
I didn't know about tunneling
@Khan Academy India - English I didn’t understand how electric field itself can “pull” electrons out..?
Why not ? Simply electric field will exert force on electron n due to strong force of attraction than the electron have in bond it will result into breakage of covalent bond and electron comes out.
this video was not in order .... I hope ... It mustbe just after Avalanche BD
How is the slope electric field
That's a V-I graph(Volt - Current). In normal conductors ,the speed of current depends on volt (i.e. More Volt Higher flow of current, less volt lower flow of current). But in this semi-conductor ,the voltage is limited even though u give higher amount volt all because of the property of the material. So, when u reach a certain volt, the flow of current peeks like anything(but do remember the volt is stable and stops at a certain point).
The graph is a V-x graph (Volt - Distance). Here, the slope at a point will be dV/dx. This dV/dx is defined to be the magnitude of the electric field. The electric field is, in fact, a continuous gradient of electric potential.
Please make all video in hindi languge
Please join pw you are a gem of a teacher
If anyone could test this app i'd be grateful! Bump into androidcircuitsolver on google
Forced accent...why?
Obsession with accents.... why?
@@nagarmalsharma9992 Sounds annoying and also leaves some quantum problem in understanding the topic. I don't understand …. why do we need to Khopy(copy) the Amerikhan(American) akhsent(accent)!!
I think cause he is heavily influenced by SAL khan(don’t blame him for that)
Notice his teaching style, his way of repeating the last words of a sentence is very similar to Sal sir...
Leave about the accent look at the way he is teaching. Have u seen such a UA-camr explaining concepts very clearly so that the student can understand very clearly
Exactly
Thanku so much sir it was amazing explanation
Fabulous explanation