This is How Diodes Work
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- Опубликовано: 13 окт 2024
- In this video, we're going to learn how diodes work. We're going to start by reviewing the basic properties of diodes, and then we'll move on to discuss how diodes are used in circuits. By the end of the video, you'll have a basic understanding of how diodes work and what they are used for!
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Keep up the good work. Best engineering channel in town.
3:11 thank for saying it both ways. Very cool.
Best explanation of the chemical/atomic level action of conductors, insulators and doping of silicon.
In the last year I've seen several examples and never got my head around it. This is finally making sense now. I just also understood PNP and NPN transistors. Wow.
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.
Wow! I've always known that diodes keep electrons flowing in one direction but never knew how it actually worked. Thanks for the video!
Nicely done. I have a PhD in EE and couldn't have done it better myself. Cheers!
Thank You, your explanations and diagrams are clear and easy to follow, I always look forward to watching more of your videos.
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.
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!
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!
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.😁
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
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 didn’t know it was called doping) you could arrange two types of combinations (P and N, though again didn’t 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!
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!
Why is this the first I've heard of this conduction band? It helps a lot for explaining how the semiconductor works.
This is the best explanation I have ever seen
Now with confidence I can say that I have understood how diodes work and how it was constructed
Thank you 👏👌
Always great video's, thank you
💡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! 👍
Wait until you watch the mosfet video...crazy.
See my new MOSFET explained video here➡️: ruclips.net/video/AwRJsze_9m4/видео.html
This is exactly how a diode works. Ty for this explanation!
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
You’re right
I noticed that and I believe it was just a typographical error; such a battery as pictured is 1.5 V.
It's not an error as some have guessed. When the battery is shown as 0.5v, you can see the flow stop. He could have elaborated on the demo more, but it was to show that 0.5v would not allow the electrons to pass the barrier.
this is great. simply explained but not dumbed down. thanks
Nice explanation, I understood all the way through.
Amazing video with great explications 👍👍
What a fantastic explanation. You definitely earned my sub. Good stuff.
Thank you for sharing your knowledge.
Excellent video
Nice explanation. Thanks
Simple and straight 👍🏻
I remember our doctor took 2 hours to explain this 🤦🏻
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
Thank you for sharing and knowledge Master 👍🙏..
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
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.
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.
Thank you so much for this great explanation. I got it at last.
I have no idea what you just said in the video but its fascinating and ive been an electronics buff for years
Two oppositely-charged compounds inside the diode conduct electricity when it flows in one direction and act as an insulator when it flows in the other direction. It's not exact but it's enough to get the process started.
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
As I understand it: Because the N-type has a negative charge bias (extra electrons) its charge will be pulled toward the power source when the charge of the power source is positive (represented here by flipping the battery so the positive terminal is connected to the cathode). The same thing happens on the other side of the diode where the P-type (positive bias/fewer electrons) is connected to the negative terminal of the power source through the anode. This attraction to the outer edges of the diode prevents the Depletion Region from forming at the P/N junction and makes the flow of electrons (aka electrical current) impossible.
In real, + side of the battery has low potential compared to - side (more electrons here), so when you reverse the battery, + side will attract the free electron's of n-type material.
Thanks i actually learned something
Love your videos ... They are fantastic !!! 😉😉😉
I thank Máster Wu for this video, THANK YOU
That is a great explanation!
Super explanation about an invention that changed the world 👍👍
So glad i subscribed to this epic channel! 🤘🏻
Where were you in my trade school years ....well done
Very good explanation PN junction🙂🙂
Excellent review of diodes! How does a zener diode differ?
A zener diode has a very sharp drop in its breakdown region compared to a regular diode. This is designed deliberately to be at a particular reverse biased voltage, called the zener voltage, say -12V. The diode can operate in the reverse bias at -12V for a variety of currents without being destroyed, but will maintain the -12V potential difference across it. If the reverse bias voltage is too high it will still breakdown and be destroyed. They are mainly used as shunt voltage regulators in power supplies. As a load increases current draw in an unregulated supply the voltage output from the supply will decrease (called regulation). The zener is placed in parallel with the load in reverse bias to fix the required voltage for the load as the current draw varies (this is the diode's operating range at the zener voltage). When the load is drawing less current, excess current is "shunnted" through the diode to ground. The characteristic of the forward bias are pretty much the same as a regular diode. A 0.6-0.7V potential difference to overcome the depletion region.
I hope that explains it.
@@1bgrant awesome explanation
Nice could you explain what happens when a diode has shorted or when it is open ?
Great explanation
Very well most of the time. Just don't let the smoke out.
Excellent video!
Yea, keep going sir, this is a amazing way for learning.
This is also pretty much how a LED works also! Nice video
Probably bc it is a Light Emitting DIODE....
@@drakefallentine8351 Sharp as a bowling ball, ain't he?
Seen the new LED explained video? so much detail covered! ruclips.net/video/O8M2z2hIbag/видео.html
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)
Hello, can you make a video about wich conductor is better? Single wite vs multiwire conductor, and aluminium vs copper? Thx in advance
That was terrific.
Do you have a video about Schottky diodes?
I easily learned something
NOW! I understand the HOLES, P type and N type doping that beat me in the book about the inventing of the transistor.
When Electrons migrate from N side to P region and Holes migrate from P side to N region, they recombine and Ions with Positive Charge and Negative charge will be present in the Depletion Region. The Electric field is caused by the Immobile Positive and Negative Ions. Needed some clarity in that portion.
0:30 rarely they are insulated with rubber... they are insulated with PVC, silicone or fiberglass
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.
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?
Typical diodes in reverse bias should present a high resistance, like 10kOhm. The exact value depends on the doping and size of the diode. If you apply a large enough reverse bias voltage, the diode will start to conduct a reverse current due to electric field breakdown. Those are 2 characteristics that an appropriate detector could use to figure out if a diode is present in a circuit.
Thanks Sir 🎓
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!
Just seen the tip, thank you very much appreciated.
@@EngineeringMindset You did such an outstanding job on this one, I couldn't resist! (Retired EE on fixed income)
4:44 how does the diode itself act as insulator in that specific moment?
So, how do they work? What’s their function. I needed more.
Watch our diodes explained video
Nice.👍
Brilliant
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?
เยี่ยมมากครับ
no clue why im here but this is pretty cool ngl
Put enough voltage it will allow current
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.
So you just came here to play youtube expert... if you already knew so much about it, then you're only here to make sure everyone else knows that you know so much about it.
How pathetic.
What type of enginering does it consider
now add a fusion rod and variable frequency driven motor encased in demineralized water.
I saw the thumbnail and the number 4004 just came to my mind 🤣
IN4007 in multisim lol
Brill, thx
I got all of that …… except the part after “As you may know ……”😂😂😂
Amazing explanation. I was just curious and this is exactly what I was looking for.
yoo thats dope
really great explanation! Also thanks for pointing out that us Americans pronounce Aluminium wrong 😂
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!
Everyone assumes that the American version of every word is wrong. Well, this time it's not. The American pronunciation is the correct one.
Sir Humphry Davy named the element alumium in 1808 and then changed it to aluminum in 1812 British editors changed it later.
We say it the way its inventor wanted it.
Ooh yeah
Amazing! Can you do one on the kj flip flop chip
3:50 Something that you should’ve 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 isn’t uniform, it tries to spread out
4:35 This is backwards, when reverse bias is applied, the depletion region shrinks to nothing. Then you’re 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.
❤️❤️
so a diode allows current to pass through when activated Like a gate. so why wouldnt use a mosfat instead because a mosfat also allows current to go through when activated.
"Apply the diodes!"-ATHF
So electrons can act like 2 divers sharing one oxygen supply to continue to exist?
Why does diode burn, when you connect it as insulator but with too much volts?
Any insulator will fail if the voltage is high enough.
@@johnd5398 yeah, I know but why is this happening if Electrons are separated?
I understand how the diode works.
What I don’t understand what compels the electron to keep it orbit.
I don't think anyone knows. But if they stop the universe will fall apart
Early, and already liked
How are diodes applied?
Alternators are one. Trains use them
Is it right to assume Electrons want to escape as a basic part of their existence?
Now I know why I got an " F " in electronics class in high school.
I don't have the brains for it.
0:50 Dude, that is way too similar to planetary systems to be coincidence.
They only work one way, or both, depending on what you actually wanted to do.
So, how was this discovered? Was it accidental, or did someone come up with the theory and then apply it intentionally?
How come I understand explanation , but when in a circuit, I get confused.
Consider me subbed
The ether
My Brain Electrons Are Not Much Strong To Understand this Electrons....
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