This is How Diodes Work
video description
Date: 2023-11-17
Related videos
Comments and reviews: 30
Liam
3: 50 Something that you shouldve pointed out is that the P and N doped pieces are still charge neutral, only the depletion region has net charges because of diffusion. That is, when concentration of something isnt uniform, it tries to spread out
4: 35 This is backwards, when reverse bias is applied, the depletion region shrinks to nothing. Then youre trying to pull electrons from the p type and holes from the n type, which is very difficult to do.
With forward bias, some of the electrons in the p side of the depletion region get replaced by holes and vice versa on the other side, and then the depletion region tries to keep equilibrium by diffusion. The reason that this requires some voltage to start is to cancel out the field set up in the depletion region.
reply
3: 50 Something that you shouldve pointed out is that the P and N doped pieces are still charge neutral, only the depletion region has net charges because of diffusion. That is, when concentration of something isnt uniform, it tries to spread out
4: 35 This is backwards, when reverse bias is applied, the depletion region shrinks to nothing. Then youre trying to pull electrons from the p type and holes from the n type, which is very difficult to do.
With forward bias, some of the electrons in the p side of the depletion region get replaced by holes and vice versa on the other side, and then the depletion region tries to keep equilibrium by diffusion. The reason that this requires some voltage to start is to cancel out the field set up in the depletion region.
reply
Scaggs
This is similar to the explanation my College profs gave in the Electronics Technician program I graduated from in 1979. For some reason this explanation makes a ton more sense than it did back in 'college. Obviously this explanation is enhanced by using the animation and thus easy to understand. After 43 years I am finally able to claim I UNDERSTAND how diodes work rather than just forward biased the switch is on and in reverse biased the switch is off. It is true, a picture is worth a thousand words, and an animation is the pathway to understanding. Great job. Three thumbs up. First time I have ever given more than two thumbs for anything.
reply
This is similar to the explanation my College profs gave in the Electronics Technician program I graduated from in 1979. For some reason this explanation makes a ton more sense than it did back in 'college. Obviously this explanation is enhanced by using the animation and thus easy to understand. After 43 years I am finally able to claim I UNDERSTAND how diodes work rather than just forward biased the switch is on and in reverse biased the switch is off. It is true, a picture is worth a thousand words, and an animation is the pathway to understanding. Great job. Three thumbs up. First time I have ever given more than two thumbs for anything.
reply
Vizec
Very good presentation. I remember in high school chem we were going over the types of bonds and such and how some element combinations desire electrons when others want to get rid of them. I realized that (at the time I didnt know it was called doping) you could arrange two types of combinations (P and N, though again didnt know they were called that at the time) together such that current could only pass in one direction. I knew what a diode was and what it did at the time but I remember having that eureka moment in class as I realized how it worked atomically. Amazing visualization of it!
reply
Very good presentation. I remember in high school chem we were going over the types of bonds and such and how some element combinations desire electrons when others want to get rid of them. I realized that (at the time I didnt know it was called doping) you could arrange two types of combinations (P and N, though again didnt know they were called that at the time) together such that current could only pass in one direction. I knew what a diode was and what it did at the time but I remember having that eureka moment in class as I realized how it worked atomically. Amazing visualization of it!
reply
shazam
Excellent! A year's worth of semiconductor theory in 5 minutes. In 1963, I bought a GE Semiconductor Handbook which explained Hole Flow. Trying to explain this to classmates got me ridiculed and laughed-at. Thank you for your excellent videos. I just gave you 5 quid.
Also thank you for saying aluminum correctly. Americans pronounce it correctly as did the discoverer of the element. A prissy Royal Society changed it on a whim to Al you mi EE yum!
reply
Excellent! A year's worth of semiconductor theory in 5 minutes. In 1963, I bought a GE Semiconductor Handbook which explained Hole Flow. Trying to explain this to classmates got me ridiculed and laughed-at. Thank you for your excellent videos. I just gave you 5 quid.
Also thank you for saying aluminum correctly. Americans pronounce it correctly as did the discoverer of the element. A prissy Royal Society changed it on a whim to Al you mi EE yum!
reply
rebmcr
When the diode acts as an insulator, and the boundary region expands, are the electrical properties of the anode & cathode different enough to detect elsewhere in the circuit (if we cared enough to make a specialised detector circuit? Or is it simply indistinguishable from, for example, a disconnected PCB trace?
reply
When the diode acts as an insulator, and the boundary region expands, are the electrical properties of the anode & cathode different enough to detect elsewhere in the circuit (if we cared enough to make a specialised detector circuit? Or is it simply indistinguishable from, for example, a disconnected PCB trace?
reply
estephanovich
This is an awesome explanation! I will have to watch it a few times to fully understand the concept, but thanks for making this as easy as it could be to understand. I am looking forward to showing these engineering videos to my now infant son in the future, to help explain how the these things work
reply
This is an awesome explanation! I will have to watch it a few times to fully understand the concept, but thanks for making this as easy as it could be to understand. I am looking forward to showing these engineering videos to my now infant son in the future, to help explain how the these things work
reply
Dyordz
This was my actual question to my high school electronics teacher. He tried to explain it, but this explanation with graphics is top-notch. My teacher even gave us the exam with my question being the last with a 10-point bonus if answered correctly. I only got 3 points for my understanding.
reply
This was my actual question to my high school electronics teacher. He tried to explain it, but this explanation with graphics is top-notch. My teacher even gave us the exam with my question being the last with a 10-point bonus if answered correctly. I only got 3 points for my understanding.
reply
Ken
It is also interesting to note that in the reverse bias mode, the size of the depletion region can be changed by varying the applied voltage. This results in what is known as a varactor or varicap which is basically a voltage controlled capacitor, useful in RF tuning and other applications.
reply
It is also interesting to note that in the reverse bias mode, the size of the depletion region can be changed by varying the applied voltage. This results in what is known as a varactor or varicap which is basically a voltage controlled capacitor, useful in RF tuning and other applications.
reply
Harun
Depletion layer forms due to the accumulation of immobile negative and positive ions left behind when holes and electrons move across the junction to the other side and recombines with the opposite charges. Not due to the Accumulation of electrons and holes in that area.
reply
Depletion layer forms due to the accumulation of immobile negative and positive ions left behind when holes and electrons move across the junction to the other side and recombines with the opposite charges. Not due to the Accumulation of electrons and holes in that area.
reply
Exibuchay
Thank you for this. I understand a little bit more now. I'm one of those people who have a hard time wrapping their mind around something they can't see. I know I'm not alone. But I think I understand at least a little bit more after watching this video. Thanks again
reply
Thank you for this. I understand a little bit more now. I'm one of those people who have a hard time wrapping their mind around something they can't see. I know I'm not alone. But I think I understand at least a little bit more after watching this video. Thanks again
reply
Anthony
That was an awesome video, really gave an excellent explanation on how diodes function. I always knew they were very simple devices, but I didn't realize that it was literally just a piece of p-silicon attached to a piece of n-silicon. That's crazy!
reply
That was an awesome video, really gave an excellent explanation on how diodes function. I always knew they were very simple devices, but I didn't realize that it was literally just a piece of p-silicon attached to a piece of n-silicon. That's crazy!
reply
Loneman
WOW! Watching this episode was a lightbulb moment for me!
I understand how and why the majority of basic electrical components work, but I could never fully get my head around the P & N stuff. until now.
Thanks!
reply
WOW! Watching this episode was a lightbulb moment for me!
I understand how and why the majority of basic electrical components work, but I could never fully get my head around the P & N stuff. until now.
Thanks!
reply
Barnaby
i'm a child of the 1950s when you had to buy or borrow a book to explain this stuff.
Screw THAT. These videos are priceless when they're done as well as this one!
Good job, my friend.
reply
i'm a child of the 1950s when you had to buy or borrow a book to explain this stuff.
Screw THAT. These videos are priceless when they're done as well as this one!
Good job, my friend.
reply
finwww
in my 4 y of college and 2 y of higher studies no one ever taught me in such simple and applicable way.
i understood the concept in just 5 min which i was never able to learn in 4 + y
reply
in my 4 y of college and 2 y of higher studies no one ever taught me in such simple and applicable way.
i understood the concept in just 5 min which i was never able to learn in 4 + y
reply
John
Excellent! Even I can understand this. The narrator engages the viewer with his simple approach and clear explanation, plus showing enthusiasm. A very good presentation - thank you!
reply
Excellent! Even I can understand this. The narrator engages the viewer with his simple approach and clear explanation, plus showing enthusiasm. A very good presentation - thank you!
reply
Jozsi
Some IC chargers, mostly phone, camera chargers have an inbuilt secret variometer. By adjusting voltage, you can decide, what to use it for, if the device is outdated or lost.
reply
Some IC chargers, mostly phone, camera chargers have an inbuilt secret variometer. By adjusting voltage, you can decide, what to use it for, if the device is outdated or lost.
reply
thedanyes
How is the depletion region formed? Does it just form any time a P-doped silicon touches an N-doped silicon? Or does it have to be engineered during the doping process?
reply
How is the depletion region formed? Does it just form any time a P-doped silicon touches an N-doped silicon? Or does it have to be engineered during the doping process?
reply
Triglyceride
Neat video. I'd like to hear more about why exactly the power source and its direction trigger bias and reverse bias. That's the part that didn't follow for me
reply
Neat video. I'd like to hear more about why exactly the power source and its direction trigger bias and reverse bias. That's the part that didn't follow for me
reply
Mordalo
Excellent. Now we also know how transistors should work. So, question. How about a video on what causes the failure of either. (other than over voltage)
reply
Excellent. Now we also know how transistors should work. So, question. How about a video on what causes the failure of either. (other than over voltage)
reply
Paul
Best explanation I have seen ever on this topic (and I have seen quite some similar ones) but this makes it crystal clear or should I say Silicon clear!
reply
Best explanation I have seen ever on this topic (and I have seen quite some similar ones) but this makes it crystal clear or should I say Silicon clear!
reply
Rusty
Amazing, thank you. Very nicely done. I knew what diodes did (roughly) but after that it was all new. Every day's a school day as they say.
reply
Amazing, thank you. Very nicely done. I knew what diodes did (roughly) but after that it was all new. Every day's a school day as they say.
reply
Richard
Wow! I've always known that diodes keep electrons flowing in one direction but never knew how it actually worked. Thanks for the video!
reply
Wow! I've always known that diodes keep electrons flowing in one direction but never knew how it actually worked. Thanks for the video!
reply
Gabi
Hello, can you make a video about wich conductor is better? Single wite vs multiwire conductor, and aluminium vs copper? Thx in advance
reply
Hello, can you make a video about wich conductor is better? Single wite vs multiwire conductor, and aluminium vs copper? Thx in advance
reply
lobokai
Thank You, your explanations and diagrams are clear and easy to follow, I always look forward to watching more of your videos.
reply
Thank You, your explanations and diagrams are clear and easy to follow, I always look forward to watching more of your videos.
reply
InsaneFirebat
Why is this the first I've heard of this conduction band? It helps a lot for explaining how the semiconductor works.
reply
Why is this the first I've heard of this conduction band? It helps a lot for explaining how the semiconductor works.
reply
FirstName
So, how was this discovered? Was it accidental, or did someone come up with the theory and then apply it intentionally?
reply
So, how was this discovered? Was it accidental, or did someone come up with the theory and then apply it intentionally?
reply
Josephine
NOW! I understand the HOLES, P type and N type doping that beat me in the book about the inventing of the transistor.
reply
NOW! I understand the HOLES, P type and N type doping that beat me in the book about the inventing of the transistor.
reply
Don
This is great. Maybe I missed something but it said the energy has to be more than 0. 7v and the battery shown is 0. 5v
reply
This is great. Maybe I missed something but it said the energy has to be more than 0. 7v and the battery shown is 0. 5v
reply
SmokinSlo
I have no idea what you just said in the video but its fascinating and ive been an electronics buff for years
reply
I have no idea what you just said in the video but its fascinating and ive been an electronics buff for years
reply
August
I understand how the diode works.
What I dont understand what compels the electron to keep it orbit.
reply
I understand how the diode works.
What I dont understand what compels the electron to keep it orbit.
reply
Add a review, comment
Other channel videos
