Transistor working | Class 12 (India) | Physics | Khan Academy

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Khan Academy India - English

Khan Academy India - English

6 жыл бұрын

Let's explore what transistors are and they (more specifically a Bipolar junction transistor) work as an amplifier.
Learn the next topic here --www.khanacademy.org/science/i...
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.
Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help!
Created by Mahesh Shenoy

Пікірлер: 194
@BharathinfinityHegde
@BharathinfinityHegde 4 жыл бұрын
i wasted hours and hours trying to make sense of the absolute madness that NCERT is, when i could've just watched a 11min video....a simply brilliant explanation
@OmarKhan-ds1si
@OmarKhan-ds1si 3 жыл бұрын
When 5V are applied to pull electrons then why we need forward biasing volatge of 0.7V at base ?
@revanthreddy5239
@revanthreddy5239 2 жыл бұрын
Dude NCERT is not mad. A book is never mad, every book is great and special in its own way
@teratrox4685
@teratrox4685 2 жыл бұрын
@@revanthreddy5239 NCERT is a joke. Not all books are divine. If you are still adamant that every book is special, I'd like to know how you feel about Mein Kampf.
@rishabhranjan5162
@rishabhranjan5162 2 жыл бұрын
@@teratrox4685 Ok clown🤡
@siddharthamondal4346
@siddharthamondal4346 2 жыл бұрын
@@teratrox4685 I agree with you. Such a weird book. Never updated even once moreover many erratic piece of information given in NCERT. Our chem sir hunted lots of misinformation in NCERT
@thunderbolt6276
@thunderbolt6276 5 жыл бұрын
No lecture can match urs not even the paid ones hats off💂
@shiwamkarn5215
@shiwamkarn5215 3 жыл бұрын
true
@meghwati8373
@meghwati8373 3 жыл бұрын
I almost felt like crying 'cause i couldn't understand the concept of transistor no matter how many videos i watch, no matter how many times my teacher explains to me. This video cleared all my confusion and gave a very clear explanation. Also, when the teacher in the video explains things he sounds so excited and happy that it makes me feel like I am actually studying something very exciting. Thank you for this video. It saved my day.
@furiousarpan7473
@furiousarpan7473 Жыл бұрын
He is the king
@sanjanasathsarani3573
@sanjanasathsarani3573 6 ай бұрын
I can understand the the feeling we both were in the same boat before watching the video
@Rohan_Verma__25
@Rohan_Verma__25 14 күн бұрын
Really bro For me transistor is very tough in entire 12th physics
@pritisarmah1688
@pritisarmah1688 5 жыл бұрын
This is the only vid in KZfaq which made my understand the concept. Thanks a lot😁
@260eeeprasuna2
@260eeeprasuna2 3 жыл бұрын
I'm very possessive soo that's the reason I won't suggest anyone to watch your videos cause you are the best best best teacher in my life.... And your teaching is damn excellent... 👍🏻
@fahimm3905
@fahimm3905 Жыл бұрын
Long story short: EXCELLENT teaching technique and the way to approaching to the key concept is just mind blowing! 😳
@rajangidwani2007
@rajangidwani2007 5 жыл бұрын
You have been my motivation ! I have been loving physics since I started watching your videos. 🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥
@sanjanasathsarani3573
@sanjanasathsarani3573 6 ай бұрын
i actually do not have words to say ... i wasted lot of time to grap the thing inside a transister and finally i can rest in peace ....THANK YOU VERY MUCH
@shiwamkarn5215
@shiwamkarn5215 3 жыл бұрын
finally i found a teacher who teaches in the way i wanted to learn..thank u so much bhaiya ..love u soo much
@Spear8
@Spear8 Жыл бұрын
i cant tell u how thankful i am . i will definitely try to help you guys when I start earning on my own . Your that physics teacher we never knew we wanted
@saturnjupiter6837
@saturnjupiter6837 2 жыл бұрын
This is probably the best video on transistor... I totally wasted hours to understand this concept but i couldn't. This video cleared the concept within 11 minutes .
@manjeiy2453
@manjeiy2453 8 ай бұрын
Alhamdullilah ☝️❤ now i have understood amplification atleast....thank you so much mister
@manjumk0501
@manjumk0501 4 жыл бұрын
Simply wonderful.. Thank you soo much.
@rajobakhatun2201
@rajobakhatun2201 3 жыл бұрын
if there had had a way to rate, I would have rated this video 10 out of 10 over this topic! Honestly all of my confusions have gone over it, thanks💝
@arunasolanki3034
@arunasolanki3034 5 жыл бұрын
It's really concept clearing.
@shrutishankar2158
@shrutishankar2158 4 жыл бұрын
I don't understand how the recombined electrons would give rise to base current..
@Tanmoybag100
@Tanmoybag100 6 ай бұрын
Yes. In very less time you explained a difficult topic. Thank you so much.. Teaching tools are also great.
@shafiajabeen9785
@shafiajabeen9785 3 жыл бұрын
What good have i done to deserve you Khan academy❤️. thank u Soo Soo much
@thrupthishetty896
@thrupthishetty896 4 жыл бұрын
Omy god his explanation is so awesome
@rishujain0721
@rishujain0721 3 жыл бұрын
Best conceptual videos on semiconductors on this channel..👍👍👍
@vishnuprasadspillai2002
@vishnuprasadspillai2002 3 жыл бұрын
Great video.. I ended up here to understand this thing... A crystal clear approach.. Thank you Khan Academy...
@ahmadeldesokey9844
@ahmadeldesokey9844 5 жыл бұрын
Best video on transistors .♥♥
@ayushchoubey635
@ayushchoubey635 2 жыл бұрын
Teachers like this are blessing to humanity
@sreehariharikumar5865
@sreehariharikumar5865 6 ай бұрын
Simply brillant! LOVED IT❤
@jauhark7746
@jauhark7746 5 жыл бұрын
Now i know what transistor actually do....thanks dude😊
@priyeshvishwakarma2655
@priyeshvishwakarma2655 2 жыл бұрын
Great explanation sir ,this is what I needed 🙏❤️
@shivangsingh2329
@shivangsingh2329 3 жыл бұрын
This is just like gift from god. Feels like only thing i needed
@mohitgrover1915
@mohitgrover1915 2 жыл бұрын
Finally got the best channel after watching sooooo many videos..🙏🙏💯💯💯
@Skz716
@Skz716 Жыл бұрын
Sir I thank you from bottom of my heart.❤️
@08athakwaninandish16
@08athakwaninandish16 2 жыл бұрын
बहुत ही अच्छा और अतुलनीय विवरण दिया गया है।
@Aditya-ir1ko
@Aditya-ir1ko 2 жыл бұрын
Sir these are the things which makes my concept in ECE luv from nit kkr
@patakotisrinivas1918
@patakotisrinivas1918 2 жыл бұрын
Beautifully explained, as it explained practical example...hats off to u r lecture...really awesome
@vijaypanta9778
@vijaypanta9778 3 жыл бұрын
Masterpiece.
@caghey
@caghey Ай бұрын
istg bestest teacher ever on electronics
@patelrushil3323
@patelrushil3323 5 жыл бұрын
Very well teached !
@rameshjain17
@rameshjain17 5 жыл бұрын
What a explaination ! ❤️ Hats off 🔥
@ismailb4334
@ismailb4334 5 жыл бұрын
Preparing for the first midterms?
@sujithgowdakr46
@sujithgowdakr46 Жыл бұрын
Really ... khan academy videos are the best .... the explanation of theory is so good . I wasted many hours in understanding this concept. But here I got the concept within 10 min . Thank you khan academy
@varunsingh8322
@varunsingh8322 3 жыл бұрын
that was phenomenal
@eliasthurner7142
@eliasthurner7142 Жыл бұрын
very well said
@dishajha815
@dishajha815 2 жыл бұрын
Brilliant explaination ,,, thanx a lot 😭
@boobalang9997
@boobalang9997 5 жыл бұрын
Great.👌👌
@pamudusachintha5869
@pamudusachintha5869 4 ай бұрын
Great explanation..Nothing can match that
@TheMariapparaj
@TheMariapparaj 9 ай бұрын
Very simple and brilliant explanation.
@jamnachoudhary5243
@jamnachoudhary5243 3 жыл бұрын
your explanation is awesome ............ so,thanks sir😊😊
@Shrimzys_Buttplug
@Shrimzys_Buttplug Жыл бұрын
i paid for a course and they failed to teach me. they are no way near this clearer explanation. thank you brother for making our life easier.
@tusharchaudhari8107
@tusharchaudhari8107 5 ай бұрын
Absolutely insane🤯🤯🤯🤯
@tahmidislamtasen1602
@tahmidislamtasen1602 10 ай бұрын
Best video on transistor on the internet 🎉
@Physicssimplifiedbyshivam
@Physicssimplifiedbyshivam Жыл бұрын
Your explanation is the best on you tube. Thank you
@mosalah151
@mosalah151 7 ай бұрын
Incredible explanation
@akbarrahmatullah6701
@akbarrahmatullah6701 4 жыл бұрын
Well explained.
@niranjan7457
@niranjan7457 3 жыл бұрын
Sir, at 04:55, you mentioned that no amount of supplied voltage would cause flow of electrons due to the presence of the barrier in the PN Junction. But a PN Junction is weakened by increasing voltage, right? So doesn't a weak barrier result in more flow of electrons sir? Kindly clarify
@KhanAcademyIndiaEnglish
@KhanAcademyIndiaEnglish 3 жыл бұрын
There are two barriers, right? Almost all the supplied voltage comes across the top barrier (collector/base junction) reverse biasing it. The lower PN barrier (Emitter/base junction) is pretty much unaffected, and so electrons cannot be pulled out.
@ianbrewis8354
@ianbrewis8354 2 жыл бұрын
I was thinking the same thing thanks for the explanation.
@vishwanathkaleeswaran9528
@vishwanathkaleeswaran9528 5 жыл бұрын
Well explained
@dharmendrarathod3753
@dharmendrarathod3753 2 жыл бұрын
Love your channel sir. ❤ 👏 🙌 👌
@hirunrashentha1082
@hirunrashentha1082 3 жыл бұрын
Great explaination 💪👌
@bhuvaneshwarisaravanan9682
@bhuvaneshwarisaravanan9682 3 жыл бұрын
Super explanation.....
@krithikashree1957
@krithikashree1957 7 ай бұрын
perfect explanation with a nice example👏
@jayantverma3313
@jayantverma3313 4 жыл бұрын
perfect
@phalgunarao5877
@phalgunarao5877 Жыл бұрын
Great explanation sir.
@whiskyguzzler982
@whiskyguzzler982 4 жыл бұрын
When peeps google Transistor they should be pointed here. Wonderful and easy to understand.
@nipunijayarathne2028
@nipunijayarathne2028 5 жыл бұрын
Woooow thankss
@cocorobinson4420
@cocorobinson4420 Жыл бұрын
Excellent video I love the way it all came together at the end
@so.meYeah
@so.meYeah 2 жыл бұрын
I don't know why most of the books teach this theory using the direction of current. It is more convenient to learn this part using the direction of flow of electron. I wasted hours to understand it until I came across this video. Thank You... Nothing Like This Channel...♥️
@xcross8537
@xcross8537 5 жыл бұрын
Good job 👏
@michaelcummings6178
@michaelcummings6178 3 жыл бұрын
A lot of this has to do with proper polarization from external power sources to properly bias the devices
@sabassrana6768
@sabassrana6768 2 жыл бұрын
I can just say a huge huge thnx sr
@beautlin3652
@beautlin3652 5 жыл бұрын
I'm very lucky to see this video😍😍 But my friends don't 😈😈
@tobiefy
@tobiefy 2 жыл бұрын
I finally got it!
@allrounder2367
@allrounder2367 2 жыл бұрын
Kindly explain more how an electron must go under recombination to be attracted from the base voltage?
@Ruktiet
@Ruktiet 5 жыл бұрын
Thank you :)
@amitkumarsaroj6071
@amitkumarsaroj6071 2 жыл бұрын
Thank You so much sir 🥰🥰🥰🥰🥰 Really very well explained
@tasnimul0096
@tasnimul0096 11 ай бұрын
great lecture sir!!
@gayathribhat6323
@gayathribhat6323 Жыл бұрын
wow just wow
@akashrawat29227
@akashrawat29227 4 жыл бұрын
Best explanation
@harindudilipa1559
@harindudilipa1559 5 жыл бұрын
It would be even great if u answer peoples question in comments khan acadamy
@cyndia3663
@cyndia3663 3 жыл бұрын
thank you so much for this and btw i like your handwriting :D
@cheese348
@cheese348 Жыл бұрын
Mahesh thank you so much, I love you man!!! ❤❤
@shawarmasharma4293
@shawarmasharma4293 Жыл бұрын
OH MY GODD BRO YOU ACTUALLY MADE IT SO EASY GODDAMNN, ITNI SI BAAT MERA FACULTY SAMJHA NAI PARA THA
@advaitagautam3505
@advaitagautam3505 Жыл бұрын
thank youuu 😄
@dawnwatching6382
@dawnwatching6382 Жыл бұрын
Great stuff, Mahesh up there as one of Khan Academy's best instructors!
@khawjariyaz511
@khawjariyaz511 Жыл бұрын
Honestly better than physics wallah but underrated due to less drama... He gives education not drama
@Shubham-rl7zw
@Shubham-rl7zw 3 жыл бұрын
Sir you said we have to connect speakers on +5 V side so that we get higher current or voice but how could the current or sound come out from +5v side becuase from that side their is movement of electron occuring so current will move opposite to that direction ... Please clear this doubt sir
@jashkadu8618
@jashkadu8618 5 жыл бұрын
Excellent video
@CYB3r_D3m0n
@CYB3r_D3m0n 5 жыл бұрын
Lit🔥🔥
@akashhera
@akashhera 7 ай бұрын
Finally I understood how a transistor works! Hats off😍
@Msmsm184
@Msmsm184 3 ай бұрын
kzfaq.info/get/bejne/pteVlZln3djPknk.htmlsi=BhPuTiSGQulM87F2
@fl7866
@fl7866 3 жыл бұрын
The video is great!! But why is it necessary for the electrons to undergo recombination in order to get pulled out?
@OmarKhan-ds1si
@OmarKhan-ds1si 3 жыл бұрын
When 5V are applied to pull electrons then why we need forward biasing volatge of 0.7V at base ?
@gauravav1635
@gauravav1635 2 жыл бұрын
@@OmarKhan-ds1si same doubt
@lakshitadixit5
@lakshitadixit5 Жыл бұрын
@@OmarKhan-ds1si because 0.7 V is the breaking voltage for silicon diode, means it cannot pass the the potential barrier which is the in built electric field in a PN junction from N to P which repels the flow of holes from P to N so in order for the holes to pass from P to N a voltage of 0.7 volt is required for a silicon diode doped with phosphorus and boron.
@lakshitadixit5
@lakshitadixit5 Жыл бұрын
@@OmarKhan-ds1si there is no potential barrier bw the metallic plate and N so electrons can be pulled easily
@lakshitadixit5
@lakshitadixit5 Жыл бұрын
Because recombination destroys holes and electron so for every electron destroyed another electron gets pulled and then the electron that gets pulled generates a new hole.
@yewedmund
@yewedmund 3 жыл бұрын
If the sound to the mic is very loud to a point that makes the voltage higher than 5V, what would happen? since now the reverse bias becomes forward bias on top
@revitharevitha5356
@revitharevitha5356 4 ай бұрын
We could add a resistor so that it doesn't exceed 5V.We could make the voltage drop
@freidarhealness5216
@freidarhealness5216 5 жыл бұрын
The transistor is probably the most genius invention in the history of human beings.
@DrAdityaReddy
@DrAdityaReddy Жыл бұрын
The diode is. imo
@rigelmario2912
@rigelmario2912 Жыл бұрын
Tnx mann
@roopas8462
@roopas8462 4 жыл бұрын
how does electron get pulled out if it recombines. shoudnt it form covalent bond
@mdsakilbhuiya8689
@mdsakilbhuiya8689 3 жыл бұрын
You are really a great teacher
@snowboarder1pro
@snowboarder1pro 2 жыл бұрын
Thanks
@miyurusam
@miyurusam 3 жыл бұрын
Sir is it possible to make an overview video of electronics?
@markszlazak
@markszlazak 3 жыл бұрын
Will you add some lectures on JFET's and MOSFET's?
@yujisaito3297
@yujisaito3297 4 жыл бұрын
Can you please make a video about thyristor?
@bonexs3294
@bonexs3294 Жыл бұрын
Sir, please do course video on electronics and communication
@sakshi6532
@sakshi6532 Жыл бұрын
Imagine getting like from this guy behind this legendary vedio
@shanmugase333
@shanmugase333 5 жыл бұрын
fun classsssss
@dawitabebe
@dawitabebe 4 ай бұрын
''When u think about sth u don't understand, u hv a terrible Uncomfortable feeling called Confusion some times it is very difficult and unhappy buisness ''
@nitika9769
@nitika9769 Жыл бұрын
Will this transistor mal function when all the wholes are recombined with in p region?
@alishaanjum1108
@alishaanjum1108 Жыл бұрын
Why recombination is imp in p region for electrons to get pulled out from it
@OmarKhan-ds1si
@OmarKhan-ds1si 3 жыл бұрын
When 5V are applied to pull electrons then why we need forward biasing volatge of 0.7V at base ?
@ricomajestic
@ricomajestic 2 жыл бұрын
Depletion layer in base emitter junction is too large and 5V are not being applied to the base-emitter!
@ganeshbodepu9845
@ganeshbodepu9845 3 жыл бұрын
At 8:25 mins, when you talk about the small fraction of recombined electrons and as a result get pulled out of the base. Why would they be pulled out after recombining?
@deebiga1781
@deebiga1781 2 жыл бұрын
I don't think every electron gets the chance to recombine because P region is very lightly doped. And before an electron gets the chance to recombine, it might get pulled into the 0.7v terminal because the probability of recombination is very less here.
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