How LED Works - Unravel the Mysteries of How LEDs Work!

[@EngineeringMindset]

*The first 100 people to use code* ENGINEERINGMINDSET at the link below will get 60% off of Incogni:➡ incogni.com/engineeringmindset

[@SantoshKumar-jd7wx]

Can gears rotate them selves, can gears rotate for long without using any electric power or human power

[@sonoftherain3761]

Please do a video on solar panels 🙏... your videos are perfect 😇

[@reshmiarajkonna]

Q

[@RetroPlayer4000]

Only 99 remain

[@EngineeringMindset]

Seen our new video on HOW SOLAR PANELS WORK in detail kzbin.info/www/bejne/j6nXaGWXec95nbs

[@robertrocheville7769]

That was, by far, the best explanation of how LEDs work I have ever seen. Super in depth, while not talking over our heads.

[@christosvoskresye]

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?

[@jonjoncs]

@@christosvoskresye As many you need to learn

[@oml81mm]

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.

[@botcontador3286]

I got here referenced from Derek's ( Veritassium ) video "Why It Was Almost Impossible to Make the Blue LED". So cool.

[@rdhunkins]

Well done. This explained Diodes in minutes what took days for my professor in college to do back in the ‘80s.

[@animetalksinhindi660]

KZbin doesn't exist in 80s

[@user-ve4kp3ex4i]

@@animetalksinhindi660 he wasn’t implying that

[@crewrangergaming9582]

didn't

[@crewrangergaming9582]

because Cathode Ray Tubes were all the rage back then

[@tabaski6647]

​@@animetalksinhindi660 obviously sherlock

[@CodyLynn100]

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.

[@ultimateenergizerguide467]

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.

[@taiwanluthiers]

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.

[@raajnivas2550]

You are wonderful, man. Explaining such a wide spectrum of electronics, in such brief lucidly.

[@EngineeringMindset]

Thank you, glad you like them. Lot of hard work goes into them

[@raajnivas2550]

@@EngineeringMindset God bless you, team.

[@tonytor5346]

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 KZbin 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🖖🏼

[@EngineeringMindset]

See my new MOSFET explained video here➡️: kzbin.info/www/bejne/d6i1e6awmsRso5Y

[@radonato]

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.

[@Dinnye01]

Having a degree in low current electrotechnics, I already know all of this, and still, this is super enjoyable to watch! I LOVE it!

[@Shiva-diva]

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!

[@danbrit9848]

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 💖

[@superspak]

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.

[@adnanshabbir8834]

this is much better than textbook definitions, he explains everything perfectly

[@Tonyarrj268]

a whole semester of my College (30 years ago) condensed in 20 minutes 😄 awesome explanation😉

[@misugijun]

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.

[@EngineeringMindset]

Thank you, very glad you enjoyed

[@khaoticman3055]

@@EngineeringMindset hey bro can u start a series on hydraulics if u have the info please

[@nicksanchez3020]

@@khaoticman3055I second that!

[@khaoticman3055]

@@nicksanchez3020 facts

[@scooterxiv3778]

My teacher used your video in class.

[@jensschroder8214]

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.

[@zoro.73]

Credits to Japan

[@notmuch_23]

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!

[@pepe6666]

hands down the best explanation of LEDs from start to finish. this needs to go on the reference shelf. thank you sir.

[@TheGuracao]

I absolutely love the pace and information density in your videos!

[@ShamrockParticle]

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.

[@Time-Trvlr]

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.

[@frommarkham424]

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.

[@VincentGroenewold]

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.

[@wilneal8015]

In those days that was referred to as Conventional Current! Confusing Indeed!! 😮❤

[@stabilini]

Amazing super condensed info about LEDs. Best video on this topic I've ever seen.

[@brianwood5220]

Brilliant video, Paul, full of explanation and detail. Just the thing to get young brains excited. Thanks for sharing.

[@stefanolassandro886]

This was extremely fun and engaging, thank you so much for the high quality content mate

[@alanhurdle3949]

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

[@rocagmo1]

This is one of the best videos on LEDs explained. Dayum!!!

[@privacyvalued4134]

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.

[@merlin5476]

An incredibly well detailed video& very well put together. Cheers. 👍

[@seragel-safty1936]

This video deserves 10/10

[@erielighthousetheater5395]

Very informative. In fact, brilliant! I'm astonished that scientists think of this stuff and make it work!

[@TheloniasBrowntail]

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?

[@tashalynn29]

I HATE led lights too. Absolutely despise them

[@notsurt]

Most computer monitors are still LCDs which do not use per pixel LEDs.

[@PaulMenden5659]

Great video. I especially like that you explained in depth how LEDs work on an atomic level.

[@silverwinterlord5300]

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!

[@AnthonyAntay]

Great video and well explained, I am not into electrical engineering at all but I understood everything.

[@Delta7Smith]

I appreciate the content of these episodes so much, I actually watch the ads.

[@SpZ-w2f]

This video helped me in my school seminar🙌🏿

[@biswajeetsingh4994]

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.

[@subn0rma1]

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.

[@burklander3338]

I learned more in this video than I have learned in years of being taught electronics elsewhere. Well done!!!

[@richblaker9087]

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.

[@agostinodibella9939]

This is the best video I ever saw that explains so much info about LEDs! Well done 👏

[@maleeshapriyanjana7604]

Great explanation with excellent illustrations. Even a person who is not having much knowledge can understand .

[@AbdifataaxMohamedFarah]

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.

[@sunneltakes]

coming from the Veritasium video i was hoping the Blue LED construction would get more love but it was hardly mentioned

[@kipchickensout]

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

[@ThePickleSoup]

How interesting it is that this video came out right before I completed a class on this topic.

[@jclowe735]

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.

[@jameshedrick9582]

By far the best explanation of LED I've heard

[@manjunathm8241]

Very good explanation with amazing animation easily understood by anyone.

[@robspiess]

@18:00 Gallium Arsenic Phosphide = GaAsP (hears audience gasp at the result)

[@VariantAEC]

Nice video, very well put together!

[@maulikshah28]

the ONLY video that I could find that actually answered my questions! Thanks

[@arunstube2703]

Hats off to u man ... Love the explanation of how really an semiconductor works..

[@Blank-n7c]

Great video about lEDS 💡

[@TheJogiraj]

Really great insight, to those who want to learn about semiconductor basics

[@lander77477]

9:12 the smell of a burning resistor is something you never want to smell

[@oscar_charlie]

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.

[@galfisk]

Yeah, I have some of those. They're not very common though.

[@galfisk]

Yeah, I have some of those. They're not very common though.

[@dkosolobov]

Super informative and very high quality video!

[@dhyana029]

Best ever tutorial on LED working principle. Thanks a lot sir.

[@EngineeringMindset]

Glad you think so

[@JackKnifeJoe9472]

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

[@Cmm4626]

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!

[@BFG_10G]

Look who's back.😊 This is such a simple, highly informative video. Very easy to understand. Great video.

[@robelpop78]

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?

[@waterfaII]

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

[@combatplayer]

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!

[@giphe]

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!

[@video99couk]

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.

[@lander77477]

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

[@r.f.thompson4955]

Wow. Everything I wanted to know about LEDs! Thanks.

[@jarvis0128]

Very informative video. Especially the infographics and animations help a lot to understand in a better manner

[@alsadekalkhayer7007]

Amazingly explained, thank you Mr

[@hasanthesyrian_]

Best video on LEDS by far

[@Jwalk-v9k]

the transition to the yellow phosphor on the blue diode at the end didnt flow from what you were just explaining about using an RGB diode.

[@alizawahreh537]

The best explanation ever, you make it so easy to understand Keep going bro

[@kuunib7325]

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.

[@LenstskyYT]

It's for the negative side , I also observed that the photons usually attached to the negative PIN cause its bigger flat PIN

[@abhilashms3178]

Best educational chanel i have ever seen

[@danypell2517]

please keep adding to electrical engineering list!! Cover all basics and beyond pleasee

[@neoalltech]

Was wondering how the led lights work finally got the idea. 😊

[@cantkeepitin]

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?

[@luka7001]

Great video please continue with common electronic components

[@stephenbenner4353]

I never noticed a flat edge, but I assume it’s for indicating polarity.

[@viperforty8450]

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.

[@m.k_abdullah]

Back to the year 2000 which i study about radio & TV, the flat side was the indicator for the anod & katod..

[@rickmeeker5713]

Thumbs up for the, "Awww" @ 16:41 🥰

[@rUsubbing]

7:20 I have never knew that you can control these at a slow transition!!!!

[@yensteel]

That last section about coloring is hilarious XD

[@SaniyaSachinm]

Thanks I got New KZbin Channel from this video to learn more knowledge.

[@the_once-and-future_king.]

I'm guessing the flat edge is to differentiate the polarity of the legs for when they're mounted on the circuit board.

[@errorerror1337]

Amazing video and easy to follow. Thank you!

[@itsjustchris3306]

The physics behind these tiny LEDs is hugeeee 😮

[@navyblueskiess]

The best video on LED, thank you

[@queueeeee9000]

Loved the gasps when revealing the color of light produced by each LED 😂

[@MegaLeonilde]

Lovely video mate.👌🏾

[@nmap-p-]

Comparing emited frequencies compared to traditional light of sunlight would be interesting!

[@LulfsBloodbag]

We sell LEDs and other electronic components so this is actually super cool. I never noticed that flat side.

[@dancoulson6579]

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.

[@pepe6666]

oh yeah! i remember something like this. i wish i had known enough to pull electronics to bits when i was young

[@sadokan5876]

I know its lots of work to do and even more to edit the videos, and that sayed Resistor, multimeter and this vid. i like most. Most informative in my mind. Thank You.

[@EngineeringMindset]

Thanks, I've been trying hard to improve the content recently. Glad you enjoy them

[@carltonpiercey9220]

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

[@arjumandvillagelife]

great & useful video from Gilgit-Baltistan❤❤😊👍