PN breakdown and avalanche | Class 12 (India) | Physics | Khan Academy

[@aswithasai4015]

Thanks is not enough for such a great and clear explanation . 🙏🙏🙏

[@s.3421]

Guys I bet uh, u won't get a better video than this in the whole of the utube!! I wasted a lot of time, searching for a video where I could understand p n junction clearly... And then I found these videos where I understood it finally!!! Tqsm🙏🏻🙏🏻👏🏻👌🏻🥳🥳

[@carl_johnson_]

You're absolutely correct bro

[@carolinerozario9702]

I’m studying for neet from your videos… though I go to coaching. your explanation was amazing sir! thanks a lot.

[@JawaharH-mb5mo]

Exactly Same

[@prakhargupta1409]

Amazing man.. Simply amazing.

[@dhurbarajpuree2992]

Simply, perfection 👌👌

[@Hino_55]

Excellent explanation! Thankyou Sir Mahesh!

[@fanruihu330]

Excellent! Thank you so much!

[@ayushgujarathi9651]

Best explanation for this topic on whole internet❤

[@carl_johnson_]

True bro

[@rakesharora7714]

You are great. Serving to society.

[@swethamurali3491]

Thanks so much! Your videos helped me ace my viva at school!

[@muzzrayyan1290]

@Khan Academy India -English at 5:36 if this collision effect can happen why does it not happen normally when the semi conductor is in equilibrium??

[@roopas8462]

because at equilibrium electron does not have sufficient energy to knock of bonded electron into conduction band

[@satyasantosh8071]

When the applied voltage is high the free electrons will get more energy hence they can knock other electrons out by coulombic repulsion’s…, hope you get your answer

[@pamudusachintha5869]

You are amazing ...I watched all these videos

[@prachisharma1545]

Thanks❤❤best lecture ever❤

[@farahmahmoud-fo5sb]

i hope you make videos about laser,💫 literally, you're the best physics teacher I have ever seen.🌹

[@kingusmanniazi3377]

I love Mahesh teachingggg

[@sivarishi9639]

Good work sir.

[@rudinno]

this guy what a legend

[@Best_hopes]

Wow...explanation is just wow💯

[@surajbhandari2071]

Really good explanation and animations.

[@airace895]

Thank you sir.

[@260eeeprasuna2]

Splendid...

[@dikshanegi222]

Thank you soo much❤

[@skywalkerlive1104]

thanks for the great explanation man :)

[@danielszewczyk4955]

Love the video

[@charistrendy]

Thank you so much

[@tiredcat6653]

wow, thanks

[@najinkunnath6009]

🔥🔥🔥

[@shizerrahman7059]

Please explain Avalanche and Zener break down because they have different mechanisms

[@power.marvel13]

Isc students

[@nehapal6888]

Thanks sir

[@brighttips8203]

thnks sir

[@shamirajsurvase8032]

But won't the hole moving in opposite direction would have same probability of hitting a electron and thus recombining and so the current should not increase drastically right?

[@farveenmahmud6674]

When the graphs extend upwards is it going towards infinity?

[@manavprakashan6149]

Actually yes but no😁

[@farveenmahmud6674]

@@manavprakashan6149 so it looks like it's going to infinity but it's not?

[@manavprakashan6149]

@@farveenmahmud6674 the diode will just be destroyed by such a large current

[@benkeates5396]

@@farveenmahmud6674 eventually destroyed by temperature

[@rnavinkumar6110]

I love you sir

[@anandapatmanabhansu]

Teacher, can the avalanche effect also takes place for high voltage in forward bias

[@shashiyadav3692]

Photodiode and led appications video sir!!!

[@lyrical_Ricko]

💥💥

[@prishiakanksha3771]

So after exceeding breakdown voltage, will the diode always be destroyed?

[@sairam7262]

It will get destroyed above a particular value. It is usually mentioned by the manufacturers

[@benkeates5396]

Destruction usually occurs from the heat caused by the generation

[@saiharanrajkumar3083]

My god, 0 dislikes, power of Khan Academy

[@ZAIRGAS_HAVEN]

Now idk who the bitch made a dislike😑

[@vaibhavmishra5962]

👍👍

[@shewtyhaque3594]

We are saying current increase when it break down.But current increase,so why is the graph in negative? Shouldn't it be in the positive line as it is increasing?

[@manupasamarawickrama1568]

Its increasing to the opposite sude

[@shewtyhaque3594]

But why? Current and voltage is creasing and so why does the graph in negative line. Doesn't it mean decreasing? I am a new student in semiconductor.if the question is peculiar please help me understand my fault

[@FrozenBusChannel]

@@shewtyhaque3594 increasing in magnitude, but since it's in the reverse direction (compared to the "normal" conducting direction of the diode) the graph goes in the negative side

[@satyasantosh8071]

@shewty Haque the forward bias as voltage increases the current flows from p to n (right to left), but in the reverse bias current flows from n to p(left to right), the negative side of graph denotes the direction of reverse bias for better understanding of difference btw forward bias and reverse bias.

[@hishamsayed474]

i wish if there was some problems thats what we get test on here in the college tho

[@phenomenalphysics3548]

what language is this?

[@rishabhranjan9168]

@@phenomenalphysics3548 👽👾

[@girishdeshpande6843]

Why doesn’t the accelerating electron(glowing) just replace the electron of the valence band which it is hitting initially?

[@roopas8462]

i think because of conservation of momentum

[@ZAIRGAS_HAVEN]

Because valence band electron is in first shell which is the outside last band of atom and so iniatially it hits valence bond electron

[@anushanayak1589]

maybe because it possesses enough energy to overcome the attractive forces of the nucleus and hence will not get restricted to moving in an orbit around the nucleus when it approaches an atom