Transistor working | Class 12 (India) | Physics | Khan Academy
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- เผยแพร่เมื่อ 17 เม.ย. 2018
- 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.
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Created by Mahesh Shenoy
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
When 5V are applied to pull electrons then why we need forward biasing volatge of 0.7V at base ?
Dude NCERT is not mad. A book is never mad, every book is great and special in its own way
@@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.
@@teratrox4685 Ok clown🤡
@@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
No lecture can match urs not even the paid ones hats off💂
true
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.
He is the king
I can understand the the feeling we both were in the same boat before watching the video
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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 .
It's really concept clearing.
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Yes. In very less time you explained a difficult topic. Thank you so much.. Teaching tools are also great.
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Now i know what transistor actually do....thanks dude😊
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Best conceptual videos on semiconductors on this channel..👍👍👍
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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💝
I don't understand how the recombined electrons would give rise to base current..
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Preparing for the first midterms?
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luv from nit kkr
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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.
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istg bestest teacher ever on electronics
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that was phenomenal
A lot of this has to do with proper polarization from external power sources to properly bias the devices
बहुत ही अच्छा और अतुलनीय विवरण दिया गया है।
Well explained.
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Well explained
Your explanation is the best on you tube. Thank you
Kindly explain more how an electron must go under recombination to be attracted from the base voltage?
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Great explanation sir.
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...♥️
Good job 👏
Super explanation.....
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
OH MY GODD BRO YOU ACTUALLY MADE IT SO EASY GODDAMNN,
ITNI SI BAAT MERA FACULTY SAMJHA NAI PARA THA
Incredible explanation
Masterpiece.
great lecture sir!!
Finally I understood how a transistor works! Hats off😍
th-cam.com/video/pqeb66xrkbE/w-d-xo.htmlsi=BhPuTiSGQulM87F2
Will you add some lectures on JFET's and MOSFET's?
how does electron get pulled out if it recombines. shoudnt it form covalent bond
very well said
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Really very well explained
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It would be even great if u answer peoples question in comments khan acadamy
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Best video on transistor on the internet 🎉
perfect
Sir is it possible to make an overview video of electronics?
thank you so much for this and btw i like your handwriting :D
Will this transistor mal function when all the wholes are recombined with in p region?
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Honestly better than physics wallah but underrated due to less drama... He gives education not drama
Best explanation
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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
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.
I was thinking the same thing thanks for the explanation.
Excellent video
Thank you :)
You are really a great teacher
Thanks
The transistor is probably the most genius invention in the history of human beings.
The diode is. imo
I have a doubt like why don't the barrier potential at each junctions get cancelled out as they would be acting opposite in direction
Lit🔥🔥
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
We could add a resistor so that it doesn't exceed 5V.We could make the voltage drop
Sir, please do course video on electronics and communication
Why recombination is imp in p region for electrons to get pulled out from it
The video is great!! But why is it necessary for the electrons to undergo recombination in order to get pulled out?
When 5V are applied to pull electrons then why we need forward biasing volatge of 0.7V at base ?
@@OmarKhan-ds1si same doubt
@@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.
@@OmarKhan-ds1si there is no potential barrier bw the metallic plate and N so electrons can be pulled easily
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.
''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 ''
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Can you please make a video about thyristor?
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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?
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.
recombined electrons become neutral, how they can be pulled out left side? anyone please
thank youuu 😄