It was covered in the video but might have been explained better. A diode will not conduct until a small voltage (the forward voltage) is applied. Once the diode has been 'switched on' by this voltage it will conduct and a current will flow. In a LED it is the current flowing, not the voltage, that controls the light emitted. In addition diodes are not 'ohmic' loads, and are not self regulating, the current can rise to such an extent that the diode is destroyed (the graph at about 14:23 shows this well). This is why a current limiting resistor is required in the circuit.
Another LED type that I learned about a few weeks ago is called an addressable LED. It’s a bit beyond this video, but worth noting for the advanced users as it allows multiple LEDs to be controlled at different colors each using only one signal pin on a microcontroller. It is a LED with an internal microcontroller that can be gotten as either RGB or RGBW and is controlled by a high low signal. The LEDs are chained in sequential order by their signal pins. To control them, a signal is sent containing the information for all the LEDs in the chain. The first LED removes its instructions and then sends the remaining signal to the next LED. These LEDs can be bought individually or in LED strips.
void of free electrons and holes, is crucial to how a diode-and therefore an LED-operates. It forms an electric field that controls how electrons flow, allowing them to move in one direction only. When an electron from the N-doped side moves across the depletion zone into the P-doped side, it releases a specific amount of energy, which is emitted as light.
LED's are basically amazing stuff. When I was little I only saw LED in red or green, and they were very dim, only useful for indicator lights on various machines. Then someone invented blue LED and now LED has basically replaced light bulbs.
This is one of the best videos I've ever seen. Easy to digest for any level of familiarity of sciences, with amazing infographics. Keep up the great work.
Excellent video. Being an old TV, RADIO. Repairman in the 70’s I have a steep learning curve ahead of me. MOSFET was the cutting edge of the cutting edge when I started Medical School. Now at age 70, I am still seeing patients but am getting back into electronics. In my life as a physician, I met many veterans from WW2 and into the early 1950’s. Learned a lot once their NDA’s expired. Amazing what they were able to do with vacuum tubes! Now, something I would appreciate your expert opinion. I learned physics in undergrad, Kozarev’s theories, which he proved to a certain pin extent, were fully validated in the Mid to late 80’s and 90’s. The physics of his Spiral mirror are amazing but well beyond my math level. I found out last year of a recent experiment in the last 10 years, they were able to SEE the Pleiades where they currently are both with light telescope and radio-telescope when using the Kosarev spiral mirror in conjunction. The Pleiades are 1200 light years away. This would indicate that Kozarev’s mirror is able to receive tachyons or other similar particles. There is a documentary on RUclips about the experiments that were tried in an area of low magnetic field near the North pole. Please let me know what your thoughts are on this scientifically proven but quire mysterious device. My name is Sergio AKA Dr. T🖖🏼
Best video i have seen so far informing us about LEDs. Thanks very much for high quality content and the effort put into it. I really appreciate you supported your theoretical background together with circuit diagraghms and also making it on breadboards just to let us see how it looks. It definitely would tale a lot of effort and time. That is very much appreciated.
Truly thank you for this ..I have wounded my hole life the science behind the led but every time I researched I got the basics of power gose hear and light ...not a single person on this planet in 30 years bothered to actually go deeper... So truly thank you 💖
For a long time, LEDs could only be produced in the colors infrared, red, orange, yellow and green. It was not until 1990 that blue LEDs and thus also white LEDs could be developed. I know that back then cars used blue bulbs instead of LEDs for high beam indicators.
It was so hard, in fact, that the three Japanese men that discovered how to make one, Isamu Akasaki, Hiroshi Amano, and Shuji Nakamura, won a Nobel Prize in physics!
I was pleased that your animation showed the correct electron flow direction from negative to positive. In electronics college our instructor demonstrated this with a piece of graphite and a piece of paper. With high DC voltage and the negative connected to the graphite the arc produced carried graphite particles to the paper as the arc continued through the paper to the positive electrode on the other side.
You are correct in that the electrons originate from the negative terminal and go towards the positive terminal But the electric field originates at the positive terminal and ends at the negative terminal. The direction of the electric field is opposite to the direction of the electron flow.
I like that too, practically it doesn't matter when thinking about circuits, but I would have loved if that was what I learned in school to begin with.
Seriously? The pacing is almost rabid and the content should be able to do the work without the needless whoosh-zippy distracting stuff. Definitely made for the ADHDTV generation.
You should do a video on "Toasters explained - How toasters work...and why you shouldn't put silverware into the slots" from an electrical engineering perspective. The electrical engineering behind the average toaster is both fascinating and horrifying. The toaster is probably the single most dangerous standalone appliance in the average home. While microwave transformers are far more dangerous/lethal and the large capacitors found in A/C units can also deliver a lethal charge, you have to disassemble those appliances to enter danger territory. The toaster, on the other hand, can deliver a lethal charge without any disassembly and can also short itself out and even cause electrical fires. The toaster also has plenty to cover on the electrical engineering front despite just being a bunch of metal and wires.
As a person born with astigmatism and nystagmus, I despise LED's nowadays. They are practically blinding, burn images in my eyesight that lingers for a long time, and have horribly opaque halos around their source, which makes it impossible to see. One could say "lol don't look at them", which is nearly impossible since nearly everything have them installed anymore, so much of which don't have a method of diffusing or masking/shading the diodes. This includes streetlights, billboard displays, headlights/taillights, screens, stoplights, ceiling light strips, industrial work lights, spot lights, etc. How can one avoid looking at them when they're everywhere?
8:35 No, unless your monitor is OLED (and very few are), you will not see LEDs there, rather LCD pixels. Even if it is a so-called LED monitor, that just means it's LED backlit. OLED is used on TVs and 'phones but rarely on monitors because of screen burn issues.
I started at seven pin segment. The start of my very own and something I make, a calculator I could buy one for 5 dollars easy, but loss the knowledge of truly how it works man I so bad at something that should be easy you video keeps me on track I can tell how appreciative I am for this ty
I have absolutely no reason whatsoever to learn about how LEDs work but your video was so good and so entertaining that I did it anyway and I don't regret it.
Thanks for this incredible video! I used your video to make a physics presentation, and it was insanely useful! I will recommend them your channel, and I properly marked your video as a source. Thanks for making such a quality content!
Correction on your part LCD screens are made of the same semiconductor that cameras use to take photos/videos however if you open the screen of a broken phone, tablet, LCD monitor you'll see a row of smd leds on a flexible strip at the bottom of the screen.
8:36 those are not tiny LEDs inside the computer monitor, those are LCD pixels that are backlit with a few white LEDs. If you went to a large sports stadium and zoomed into their large screen, yes then you would see lots of LEDs that make up the picture, but thats not the case with an LCD computer monitor
If someone plonks a mug of coffee with "Watts up?" written on the side, onto your working tray, the tray will always tip to one side. but the led won't roll off - that's what the flat bit is for.
I have learned that before. But the way you explained, makes the learning more enjoyable/fun making electronics more interesting for newbies. Very well explained and great video.
About the diode thing- Does that mean if you heat up a diode enough for the aluminum and phosphorus to all mix together the diode will no longer work? Awesome video, thank you!
excellent video! Just a couple notes. at 8:35, unlike what's mentioned, most monitors would not use LEDs directly in the subpixels, more commonly just as a backlight, although the color mixing mechanism is the same. second is that the white LEDs used in light bulbs don't mix colors like that, as implied at the end. they're simply blue LEDs with a phosphor coating. exceptions exist of course. these are really nitpicks though, and I'm sure they've been pointed out before. i hope you keep up the great work!
There ate some LEDs out there where the larger plate (the anvil) is the anode. The flat spot is the only reliable method on through-hole LEDs to determine polarity.
I have been struggling understanding this since my untermediate school from now on i can explain to my brother. Thanks for your excellent expalantion. i was amazed.
thanks for referring me to this, I still wonder how much you'd need to break an LED if you wire it up the wrong direction but it has answered so many other questions
0:41: 💡 LEDs produce light by emitting photons when a voltage is applied, and they are more energy efficient than traditional incandescent lights. 3:25: 🔦 LEDs, including SMD and high-powered versions, emit different colored lights and can be used in various applications. 6:49: 💡 LEDs are used in various circuits and can be controlled to produce different colors and brightness. 10:06: 💡 LEDs and their components explained. 13:43: 🔬 The PN Junction in a semiconductor creates a barrier that prevents electrons from moving across, but a forward bias allows current to flow. 16:49: 🔬 Scientists discovered how to create different colors of light by blending different materials to form a semiconductor. Recap by Tammy AI
Great description! 👍🙏 Could you make a video about oscillators? I'm curious to learn more about them. Also, what is a photon? I can see the light from my remote control with my naked eye, does that mean I can see infrared light?
Humans can see infrared light under certain conditions. Infrared light has longer wavelengths and lower energy than visible light. The human eye is made of water, which absorbs infrared light at wavelengths just slightly longer than the deepest red color that humans can perceive. However, if infrared light is bright enough, and of short enough wavelength, then humans can perceive it as red. edit: that was bard, I am no that smart
Very cool video, and now i know that gregtech mod for minecraft has always been lying that regular diodes must be made from gallium arsenide, while they easily can be made from silicon and some doping.
You should add a section about the discovery of the Blue LED and how the inventors won the nobel prize. Due to its importance in modern life and completing the RGB combination - I.e allowing white light to be created with low energy, and allowing LED screens to function, and the colour changing lightbulbs etc. In your example you elaborate on the process of Red, Orange, Yellow, Green etc. with Gallium Phosphade, but blue is entirely different - Silicon Carbide.
Tha ks for the feedback. Unfortunately, it's not possible to add to a published video. This video is just about how it works. Veritasium has made a fantastic video about the story of the Blue LED and the Nobel prize.
I'm new to electronics, and learning as I go along. I watched this video for the 4 pin RGB LED section, and it was by far the best video I've found. I made his breadboard circuit, but only have 2K potentiometers. Would that make any difference to the rate/way the resistence is limited to the LED?
8:31 *Correction!* These are not LEDs! In most cases, this is *LCD* technology, with LEDs at the side or back for crude backlight illumination. In other cases, these are OLEDs, which stands for organic LEDs, which are also not quite the same as LEDs.
The vats majority of screens don't use individual LEDs. Most use white led back light, and RGB LCD to filter the white light. Only OLED and MicroLED uses individual LEDs for color.
3:46 That bulb has a step-down converter, never seen that before. The LED Edison style house bulbs that I seen have been chains of LEDS banks in series and parallel with almost no electronics aside from LEDS. I have cut the tracings on the PCB and re-configured the bulb to run off 12 or 24VDC instead of mains power. After I finish I can re-glue the dome back on and have an RV light.
I remember back when you could get some pretty strange LED's in apliances as late as the early 90's. I distinctly remember finding a green LED housed in a 5mm red package from an old radio. As well as some red LED's packaged in 5mm amber packages from an old remote control truck toy. I also remember a pale pink transparent package housing a red LED in a smoke alarm many years ago.
I could see using an RGB on a single setting to make a fancy, more decorative bulb without using the yellow phosphor, giving a. Cleaner appearance. But it's neat that it Also makes groovy colour changing bulbs
The end of the video kinda undersells how big the discovery of the blue LED was. You name SiC as the blue LED, but in reality its indirect band makes it less efficient for the application. Gallium nitride was the bigger deal, it has a similar gap, but it's direct. It was such a big deal that the engineers who developed GaN based blue LEDs won the Nobel Prize in 2014.
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Can gears rotate them selves, can gears rotate for long without using any electric power or human power
Please do a video on solar panels 🙏... your videos are perfect 😇
Q
Only 99 remain
Seen our new video on HOW SOLAR PANELS WORK in detail ruclips.net/video/Yxt72aDjFgY/видео.html
That was, by far, the best explanation of how LEDs work I have ever seen.
Super in depth, while not talking over our heads.
It was too redundant -- it felt like 4 or 5 shorts edited together. How many times do we have to be told about the flat side of a diode?
@@christosvoskresye As many you need to learn
It was covered in the video but might have been explained better.
A diode will not conduct until a small voltage (the forward voltage) is applied. Once the diode has been 'switched on' by this voltage it will conduct and a current will flow. In a LED it is the current flowing, not the voltage, that controls the light emitted.
In addition diodes are not 'ohmic' loads, and are not self regulating, the current can rise to such an extent that the diode is destroyed (the graph at about 14:23 shows this well). This is why a current limiting resistor is required in the circuit.
I got here referenced from Derek's ( Veritassium ) video "Why It Was Almost Impossible to Make the Blue LED". So cool.
Well done. This explained Diodes in minutes what took days for my professor in college to do back in the ‘80s.
RUclips doesn't exist in 80s
@@animetalksinhindi660 he wasn’t implying that
didn't
because Cathode Ray Tubes were all the rage back then
@@animetalksinhindi660 obviously sherlock
Another LED type that I learned about a few weeks ago is called an addressable LED. It’s a bit beyond this video, but worth noting for the advanced users as it allows multiple LEDs to be controlled at different colors each using only one signal pin on a microcontroller.
It is a LED with an internal microcontroller that can be gotten as either RGB or RGBW and is controlled by a high low signal. The LEDs are chained in sequential order by their signal pins. To control them, a signal is sent containing the information for all the LEDs in the chain. The first LED removes its instructions and then sends the remaining signal to the next LED. These LEDs can be bought individually or in LED strips.
void of free electrons and holes, is crucial to how a diode-and therefore an LED-operates. It forms an electric field that controls how electrons flow, allowing them to move in one direction only. When an electron from the N-doped side moves across the depletion zone into the P-doped side, it releases a specific amount of energy, which is emitted as light.
LED's are basically amazing stuff. When I was little I only saw LED in red or green, and they were very dim, only useful for indicator lights on various machines.
Then someone invented blue LED and now LED has basically replaced light bulbs.
You are wonderful, man. Explaining such a wide spectrum of electronics, in such brief lucidly.
Thank you, glad you like them. Lot of hard work goes into them
@@EngineeringMindset God bless you, team.
This is one of the best videos I've ever seen. Easy to digest for any level of familiarity of sciences, with amazing infographics. Keep up the great work.
I love how, when adjusting the ratios of GaAs and GaP (GaAsP), you had the audience GASP every time the light came on.
Subtle, yet beautiful.
Excellent video. Being an old TV, RADIO. Repairman in the 70’s I have a steep learning curve ahead of me. MOSFET was the cutting edge of the cutting edge when I started Medical School. Now at age 70, I am still seeing patients but am getting back into electronics. In my life as a physician, I met many veterans from WW2 and into the early 1950’s. Learned a lot once their NDA’s expired. Amazing what they were able to do with vacuum tubes! Now, something I would appreciate your expert opinion.
I learned physics in undergrad, Kozarev’s theories, which he proved to a certain pin extent, were fully validated in the Mid to late 80’s and 90’s. The physics of his Spiral mirror are amazing but well beyond my math level. I found out last year of a recent experiment in the last 10 years, they were able to SEE the Pleiades where they currently are both with light telescope and radio-telescope when using the Kosarev spiral mirror in conjunction. The Pleiades are 1200 light years away. This would indicate that Kozarev’s mirror is able to receive tachyons or other similar particles. There is a documentary on RUclips about the experiments that were tried in an area of low magnetic field near the North pole. Please let me know what your thoughts are on this scientifically proven but quire mysterious device. My name is Sergio AKA Dr. T🖖🏼
See my new MOSFET explained video here➡️: ruclips.net/video/AwRJsze_9m4/видео.html
Having a degree in low current electrotechnics, I already know all of this, and still, this is super enjoyable to watch! I LOVE it!
My teacher used your video in class.
Best video i have seen so far informing us about LEDs. Thanks very much for high quality content and the effort put into it. I really appreciate you supported your theoretical background together with circuit diagraghms and also making it on breadboards just to let us see how it looks. It definitely would tale a lot of effort and time. That is very much appreciated.
Thank you, very glad you enjoyed
@@EngineeringMindset hey bro can u start a series on hydraulics if u have the info please
@@khaoticman3055I second that!
@@nicksanchez3020 facts
Truly thank you for this ..I have wounded my hole life the science behind the led but every time I researched I got the basics of power gose hear and light ...not a single person on this planet in 30 years bothered to actually go deeper... So truly thank you 💖
this is much better than textbook definitions, he explains everything perfectly
For a long time, LEDs could only be produced in the colors infrared, red, orange, yellow and green.
It was not until 1990 that blue LEDs and thus also white LEDs could be developed.
I know that back then cars used blue bulbs instead of LEDs for high beam indicators.
Credits to Japan
It was so hard, in fact, that the three Japanese men that discovered how to make one, Isamu Akasaki, Hiroshi Amano, and Shuji Nakamura, won a Nobel Prize in physics!
hands down the best explanation of LEDs from start to finish. this needs to go on the reference shelf. thank you sir.
The explication of the n and p type materials was so clear. I don’t think I’ve ever seen it done that well. Bravo!
a whole semester of my College (30 years ago) condensed in 20 minutes 😄
awesome explanation😉
I was pleased that your animation showed the correct electron flow direction from negative to positive. In electronics college our instructor demonstrated this with a piece of graphite and a piece of paper. With high DC voltage and the negative connected to the graphite the arc produced carried graphite particles to the paper as the arc continued through the paper to the positive electrode on the other side.
You are correct in that the electrons originate from the negative terminal and go towards the positive terminal
But the electric field originates at the positive terminal and ends at the negative terminal. The direction of the electric field is opposite to the direction of the electron flow.
I like that too, practically it doesn't matter when thinking about circuits, but I would have loved if that was what I learned in school to begin with.
In those days that was referred to as
Conventional Current!
Confusing Indeed!! 😮❤
I absolutely love the pace and information density in your videos!
Seriously? The pacing is almost rabid and the content should be able to do the work without the needless whoosh-zippy distracting stuff. Definitely made for the ADHDTV generation.
This was extremely fun and engaging, thank you so much for the high quality content mate
Brilliant video, Paul, full of explanation and detail. Just the thing to get young brains excited. Thanks for sharing.
You should do a video on "Toasters explained - How toasters work...and why you shouldn't put silverware into the slots" from an electrical engineering perspective. The electrical engineering behind the average toaster is both fascinating and horrifying. The toaster is probably the single most dangerous standalone appliance in the average home. While microwave transformers are far more dangerous/lethal and the large capacitors found in A/C units can also deliver a lethal charge, you have to disassemble those appliances to enter danger territory. The toaster, on the other hand, can deliver a lethal charge without any disassembly and can also short itself out and even cause electrical fires. The toaster also has plenty to cover on the electrical engineering front despite just being a bunch of metal and wires.
As a person born with astigmatism and nystagmus, I despise LED's nowadays.
They are practically blinding, burn images in my eyesight that lingers for a long time, and have horribly opaque halos around their source, which makes it impossible to see.
One could say "lol don't look at them", which is nearly impossible since nearly everything have them installed anymore, so much of which don't have a method of diffusing or masking/shading the diodes.
This includes streetlights, billboard displays, headlights/taillights, screens, stoplights, ceiling light strips, industrial work lights, spot lights, etc. How can one avoid looking at them when they're everywhere?
I HATE led lights too. Absolutely despise them
Amazing super condensed info about LEDs. Best video on this topic I've ever seen.
An incredibly well detailed video& very well put together. Cheers. 👍
Very informative. In fact, brilliant! I'm astonished that scientists think of this stuff and make it work!
8:35 No, unless your monitor is OLED (and very few are), you will not see LEDs there, rather LCD pixels. Even if it is a so-called LED monitor, that just means it's LED backlit. OLED is used on TVs and 'phones but rarely on monitors because of screen burn issues.
I learned more in this video than I have learned in years of being taught electronics elsewhere. Well done!!!
I started at seven pin segment. The start of my very own and something I make, a calculator I could buy one for 5 dollars easy, but loss the knowledge of truly how it works man I so bad at something that should be easy you video keeps me on track I can tell how appreciative I am for this ty
I have absolutely no reason whatsoever to learn about how LEDs work but your video was so good and so entertaining that I did it anyway and I don't regret it.
This is one of the best videos on LEDs explained. Dayum!!!
Thanks for this incredible video!
I used your video to make a physics presentation, and it was insanely useful! I will recommend them your channel, and I properly marked your video as a source.
Thanks for making such a quality content!
Most computer monitors are still LCDs which do not use per pixel LEDs.
I am here because of Nakamura. We are all here because of Nakamura.
Of course
@@laetitiazichy-vanlidth5882who is that
Who ?
@@c4r5on88he’s the guy who invented blue leds, essentially unlocking the last barrier to leds, and why we use leds for house lighting today.
@Bbhamadama888 oh that makes sense now. Thank you 😊
Is it just me or is the theatrics of these vids getting better and better?! Great edit and info I learn so much from you!
Correction on your part LCD screens are made of the same semiconductor that cameras use to take photos/videos however if you open the screen of a broken phone, tablet, LCD monitor you'll see a row of smd leds on a flexible strip at the bottom of the screen.
This video deserves 10/10
8:36 those are not tiny LEDs inside the computer monitor, those are LCD pixels that are backlit with a few white LEDs. If you went to a large sports stadium and zoomed into their large screen, yes then you would see lots of LEDs that make up the picture, but thats not the case with an LCD computer monitor
Great explanation with excellent illustrations. Even a person who is not having much knowledge can understand .
Great video about lEDS 💡
If someone plonks a mug of coffee with "Watts up?" written on the side, onto your working tray, the tray will always tip to one side. but the led won't roll off - that's what the flat bit is for.
I have learned that before. But the way you explained, makes the learning more enjoyable/fun making electronics more interesting for newbies. Very well explained and great video.
Great video. I especially like that you explained in depth how LEDs work on an atomic level.
About the diode thing- Does that mean if you heat up a diode enough for the aluminum and phosphorus to all mix together the diode will no longer work?
Awesome video, thank you!
excellent video!
Just a couple notes. at 8:35, unlike what's mentioned, most monitors would not use LEDs directly in the subpixels, more commonly just as a backlight, although the color mixing mechanism is the same. second is that the white LEDs used in light bulbs don't mix colors like that, as implied at the end. they're simply blue LEDs with a phosphor coating. exceptions exist of course.
these are really nitpicks though, and I'm sure they've been pointed out before. i hope you keep up the great work!
There ate some LEDs out there where the larger plate (the anvil) is the anode. The flat spot is the only reliable method on through-hole LEDs to determine polarity.
Yeah, I have some of those. They're not very common though.
Yeah, I have some of those. They're not very common though.
@18:00 Gallium Arsenic Phosphide = GaAsP (hears audience gasp at the result)
I have been struggling understanding this since my untermediate school from now on i can explain to my brother. Thanks for your excellent expalantion. i was amazed.
thanks for referring me to this, I still wonder how much you'd need to break an LED if you wire it up the wrong direction
but it has answered so many other questions
0:41: 💡 LEDs produce light by emitting photons when a voltage is applied, and they are more energy efficient than traditional incandescent lights.
3:25: 🔦 LEDs, including SMD and high-powered versions, emit different colored lights and can be used in various applications.
6:49: 💡 LEDs are used in various circuits and can be controlled to produce different colors and brightness.
10:06: 💡 LEDs and their components explained.
13:43: 🔬 The PN Junction in a semiconductor creates a barrier that prevents electrons from moving across, but a forward bias allows current to flow.
16:49: 🔬 Scientists discovered how to create different colors of light by blending different materials to form a semiconductor.
Recap by Tammy AI
Great description! 👍🙏
Could you make a video about oscillators? I'm curious to learn more about them.
Also, what is a photon? I can see the light from my remote control with my naked eye, does that mean I can see infrared light?
Humans can see infrared light under certain conditions.
Infrared light has longer wavelengths and lower energy than visible light.
The human eye is made of water, which absorbs infrared light at wavelengths just slightly longer than the deepest red color that humans can perceive. However, if infrared light is bright enough, and of short enough wavelength, then humans can perceive it as red.
edit: that was bard, I am no that smart
This video helped me in my school seminar🙌🏿
This is the best video I ever saw that explains so much info about LEDs! Well done 👏
I appreciate the content of these episodes so much, I actually watch the ads.
How interesting it is that this video came out right before I completed a class on this topic.
coming from the Veritasium video i was hoping the Blue LED construction would get more love but it was hardly mentioned
Nice video, very well put together!
Great video and well explained, I am not into electrical engineering at all but I understood everything.
9:12 the smell of a burning resistor is something you never want to smell
THANKS SAYAR
Look who's back.😊
This is such a simple, highly informative video. Very easy to understand. Great video.
00:19 so this is you 😮😊
I've been in the last 3 videos, also previously in ~4 videos. Some of the older ones I used to introduce the video
@@EngineeringMindset Nice... maybe I have not viewed those videos..😀
Now i will view those also...
The fact you gave about the remote is actually how I check the batteries in my remotes by aiming them at my camera and pressing a button
Super informative and very high quality video!
By far the best explanation of LED I've heard
Superb video, but ONE thing I miss: why the hell are modern LED sooo much brighter than LEDs 25 years ago? What is the trick?
Really great insight, to those who want to learn about semiconductor basics
Best ever tutorial on LED working principle. Thanks a lot sir.
Glad you think so
Very cool video, and now i know that gregtech mod for minecraft has always been lying that regular diodes must be made from gallium arsenide, while they easily can be made from silicon and some doping.
the ONLY video that I could find that actually answered my questions! Thanks
Very good explanation with amazing animation easily understood by anyone.
It's for the negative side , I also observed that the photons usually attached to the negative PIN cause its bigger flat PIN
Thumbs up for the, "Awww" @ 16:41 🥰
Hats off to u man ... Love the explanation of how really an semiconductor works..
You should add a section about the discovery of the Blue LED and how the inventors won the nobel prize. Due to its importance in modern life and completing the RGB combination - I.e allowing white light to be created with low energy, and allowing LED screens to function, and the colour changing lightbulbs etc.
In your example you elaborate on the process of Red, Orange, Yellow, Green etc. with Gallium Phosphade, but blue is entirely different - Silicon Carbide.
Tha ks for the feedback. Unfortunately, it's not possible to add to a published video. This video is just about how it works. Veritasium has made a fantastic video about the story of the Blue LED and the Nobel prize.
The best explanation ever, you make it so easy to understand
Keep going bro
Best video on LEDS by far
7:20
I have never knew that you can control these at a slow transition!!!!
Holy cow. I've neve seen so much relevant information packed into a video without feeling overwhelmed. How long did it take you to put this togehter?
the flat edge indicates the negative terminal.
I'm new to electronics, and learning as I go along. I watched this video for the 4 pin RGB LED section, and it was by far the best video I've found. I made his breadboard circuit, but only have 2K potentiometers. Would that make any difference to the rate/way the resistence is limited to the LED?
Seen our new Potentiometer Explained video? ➡️ ruclips.net/video/Xb-MZMoUtcQ/видео.html
8:31 *Correction!* These are not LEDs! In most cases, this is *LCD* technology, with LEDs at the side or back for crude backlight illumination. In other cases, these are OLEDs, which stands for organic LEDs, which are also not quite the same as LEDs.
Amazingly explained, thank you Mr
The vats majority of screens don't use individual LEDs. Most use white led back light, and RGB LCD to filter the white light. Only OLED and MicroLED uses individual LEDs for color.
please keep adding to electrical engineering list!! Cover all basics and beyond pleasee
The flat edge shows where the negative terminal is. I believe it's also where the lead is shorter but since one cuts them off I am not sure.
Very informative video. Especially the infographics and animations help a lot to understand in a better manner
3:46 That bulb has a step-down converter, never seen that before. The LED Edison style house bulbs that I seen have been chains of LEDS banks in series and parallel with almost no electronics aside from LEDS. I have cut the tracings on the PCB and re-configured the bulb to run off 12 or 24VDC instead of mains power. After I finish I can re-glue the dome back on and have an RV light.
I remember back when you could get some pretty strange LED's in apliances as late as the early 90's.
I distinctly remember finding a green LED housed in a 5mm red package from an old radio. As well as some red LED's packaged in 5mm amber packages from an old remote control truck toy.
I also remember a pale pink transparent package housing a red LED in a smoke alarm many years ago.
oh yeah! i remember something like this. i wish i had known enough to pull electronics to bits when i was young
Wow. Everything I wanted to know about LEDs! Thanks.
I never noticed a flat edge, but I assume it’s for indicating polarity.
Best educational chanel i have ever seen
Comparing emited frequencies compared to traditional light of sunlight would be interesting!
I could see using an RGB on a single setting to make a fancy, more decorative bulb without using the yellow phosphor, giving a. Cleaner appearance. But it's neat that it Also makes groovy colour changing bulbs
That last section about coloring is hilarious XD
The end of the video kinda undersells how big the discovery of the blue LED was. You name SiC as the blue LED, but in reality its indirect band makes it less efficient for the application. Gallium nitride was the bigger deal, it has a similar gap, but it's direct. It was such a big deal that the engineers who developed GaN based blue LEDs won the Nobel Prize in 2014.
"gallium arsenic?" isnt it gallium arsenide? great explanation of the conduction layer business. better than veritasium's.
The physics behind these tiny LEDs is hugeeee 😮