⚠️ *This video took a long time to make* if you would like to buy Paul a coffee to say thanks, link below: ☕ PayPal: www.paypal.me/TheEngineerinMindset Channel membership: ruclips.net/channel/UCk0fGHsCEzGig-rSzkfCjMwjoin Patreon: www.patreon.com/theengineeringmindset
I think this is the best explanation to the concept of resistance to battery life to LED current and voltage ratings. Thank you sirrrrr........👌 👏👏👏 🇮🇳🇮🇳🇮🇳
OMG - this was the quintessential video I needed at the exact right time in my DIY projecting building life dealing with LEDs. Thank you so much for perfectly explaining this to me.
I've been working on a project that requires led lighting, and after many hours of trawling the Internet to find out how to calculate resistors required, my knowledge was still as clear as mud. This video fully explained everything I needed and I now know what I need to do. Thank you for taking the time to make this, it has really helped me
Thank you for sharing this. This has got to be THE best Resistor and LED introduction lesson on the web! You have amazing sense for explaining and lecturing. Insta subbed.
Only 20 mins to learn all the essentials about LEDs for a project I am working on and it only took 5 minutes into the video to known I had found the right channel and subbed. There are a lot of good tutorials out there but for a novice like me they were too long, too short and/or left me with even more questions. This gave me all the info I needed to feel confident to move forward and plan on learning much more now. Thanks!!!
This video is superb! Career-wise I'm a medical microbiologist and only did electronics as a 1/2 GSCE decades ago (and I was mediocre at best). However, I'm a geek who wants to build scenery for a wargame I play and I intend to have certain portions light up. This video is so well executed I now feel confident in completing the task I set myself, thank you so much.
The way you explain things is amazing. As an electrical apprentice, sometimes it’s difficult to grasp certain concepts even in 8 hour days in school. I can leave class and watch one of your videos and 20 minutes later I understand perfectly. Can’t thank you enough for what you do. 👊🏼
Studied in Electronics & electrical Engineering and I can only say one thing: BRAVO And KEEP UP the good work because these videos are way better explained than any course taken at school. You get the theory and the practical all in one! Great job. 👍👍👍👍👍
I've seen in other videos people complaining about you reposting old videos. To which is say BS. I just bought my son(12 years) a DC supply. He's hooking up LEDs and resistors just like in your video. He's very excited by the outcome. He's showing them little circuits to his little brother, his friends, and I suggested he take them to school for a quick demo in class. Your videos help me explain electronics to a younger generation. And I'm not a great teacher. So keep on reposting those older videos. Thanks.
I started with experimenting with LED strip lights, then my dad bought me a small multimeter. I don't know how to use it other than read resistances. This video really helped me figure out how to make a circuit for what I want to do. Thanks so much! glad youtube suggested this
Such a nice coinsidence! Just yesterday i did these experiments, measurements and calculations to learn this subject. There were some questions on my mind, though. After watching your video, now everything is clear and I think I totally got it. Thanks for great videos. I do appreciate your effort!
*Thank U very, very much !!!!* When I was studying electronics, they were NO LED's, but the basic calculations will always remain the same !!!! It was a very nice refresshing video of that + LED theory and practice.
0:20 nice to mention (for the beginners out there) that it *isn't the thin wire creating the light.* Instead, it is the behavior of the electrons within the (p-n junction of the) semiconductor material that emits light. So the light comes from the tiny square of material to which the wire is connected.
Omg, not in our class even in practical lap it wasn't explain this way, I am speechless by your content, God bless you abundantly sir, I have just understood this topic clearly.
EXCELLENT! Best LED explanation I have ever reviewed! Great step-by-step understanding of the subject. I plan to review your other electronic based videos to learn more on the subjects.
An absolute livesaver!! I've been using led for ages but couldn't find anything simple as to how to properly circuit them! All the led I could have saved...
I am literally the happiest man on the planet I found this channel I’m not joking I am a 4th year electrician in nyc and I have been dying to expand my knowledge thank you so much
Thanks Paul. Great video. you are very thorough and explain things in a clear and concise way. I actually feel like doing some calculations now. I'll definitely be checking out some more of your content.
This makes so much sense. Thank you. Wired up some LEDs in parallel for a painting and I threw in some UV LEDs that required higher voltage. Used the same resistors. When I lit it up, the UV ones were really dim. I think that means I need to replace the resistor on those UV LEDs and not throw my painting out the window with all it's attached wires. :-) ❤
All confusions and Mistry around a circuit's voltage current and resistance is clear now, Now I can easily design my circuit, Thanks a lot for such a detailed informative video
You do a really excellent job of explaining various topics! I studied electronics in college back in the late 80s-early 90s so it's fun to kind of relive subjects like this one. One thing about LEDs that I remember that you didn't mention (and maybe things have changed over time), but the round base of an LED will have a flat spot on it next to one of the legs...this identifies the cathode side.
excellent content that answered my questions and actually leaves me wanting to learn more. I struggled with electronics at school (a long time ago!) and have learnt more here than back then. I'm forwarding this to teaching colleagues. Thank you.
idk if this is a sign but i was just struggling with rgb leds with one of my project and now i have a much better understanding on why it wasnt working out well for me
I think this is the best explanation to the concept of resistance to battery life to LED current and voltage ratings. Thank you sirrrrr........👌 👏👏👏 🇮🇳🇮🇳🇮🇳
0:14 "Little wire emitting light in a bulb, which burns out if too much current is passed through it" is suspiciously similar to incandescent bulbs (even though incandescent bulbs are in a vacuum).
@ 9:50 if we need 350 Ohms res. we could do like so: supposing to have 2 resistors of 330 Ohms each and 2 of 390 each we can identify the 330 ones as R1 and the 390 ones as R2 and proceed by building a parallel/series scheme. First we create an equivalent resitance by putting R1 and R2 in parallel, RA = R1//R2, that gives RA = (R1xR2)/(R1+R2) = 178 Ohms (about). Then we build another one RB = RA and so we put RA and RB in series. Since resistors in serties just see a total resistance that is the sum of the components, we get: Rtot = RA + RB = 178 + 178 = 356 Ohms, which is around what we nedded in the beginning.
You helped me understand this so much better. Now I have a very good vision about LEDs and how they work. Thank you so much. Each time I watch your videos I remember why I subscribed to this channel.
1:25 very good and understandable visualization of how a resitor works! Great video as always! Question: And how would you represent voltage in this traffic jam simulation?
You explained that there are many ways to connect the same number of LEDs, but I think you should have also mentioned that you should use the way that minimizes the amount of power used by the resistors to reduce wasted power and extend the battery life.
@@deang5622 That makes sense for only one LED, but if you have more than one LED in a circuit, whether you wire them in series or parallel makes a difference. If all the LEDs are in parallel, then you will need resistors for each branch and will be wasting a lot of power. If you can wire them in series as much as you can before going parallel, then you can reduce the resistors and thus wasted power.
This is an excellent video! I had to buy a sweatshirt it was so good! NOTE: you do NOT have to look up a chart to remember the resistor numbers. All you have to do is remember the black (o) and the brown (1). After that, they follow the colors of the rainbow. Well, close enough. At least, that's how I do it. :)!
@@EngineeringMindset Hi folks - nice that you reply to the comments - thanks! NOTE: in the new video "Because" is not spelt correctly at 17:30 minutes in. Say - got my Engineering mindset hoodie. Comfy! Couple thoughts tho - 1. any chance they design will be big on the back, and a tiny logo on the front, in future versions? 2. With electronics the risk of fire is small; that's true. But I often use these type clothings in maker applications where I'm welding. Synthetic fibers melt instead of ignite, which makes them a higher burn hazard. Any chance future versions (or options) will be made of natural fibers only? Again - thanks for the great videos and ideas! - Antonio
Thanks, well spotted. Added correction to video description. Glad to hear you like the hoodie. Large additional logo on back might be possible, see what I can do for next round. Material is a good point, currently Teespring do the manufacturing and shipping as I would otherwise need to buy the machines, stock, storage space and take time out from video making to post the items, send tracking and handle returns/lost items so the material is slightly out of my hands although I have been trying some other suppliers, I'll see what the materials and quality is like and perhaps move to them or link to them.
17:45 into the video ( it says 0.06 squared * 116.6 Ohms = 0.49W ) my calculator said 0.41976 . Thanks for the video it helps a lot all your videos are fantastic
1st year in Electronics: "Lets look for a 381,4 Ohm resistor or it may fail!!" 10 years in the market: "Just put a 1K 0603 on it and lets call it a day"
Mind you, I have seen a friend (who has a degree in the subject) teach a class using Arduino's put an LED directly on to a data out pin. 5 volts on to a red LED without any resistor. His comment to me was, it does not matter, it works. It was at that point I gave up!
Thank you so much, high schooler here, needed the video for a project ( a wind mill that produces electricity) instead of the battery will use a dc motor as a generator. Hoping it works
Congratulations. you have worked very hard. this seems obvious. and it was a very detailed and flowing narration. It has been a resource that will be used for years. Not just coffee, I'll make you Turkish coffee after dinner.
6:40 I'm going to disagree here. I know this is a first-approximation, introductory-level video, but these things get ingrained early and stick around after one should know better. TLDR: Your LED current should be high enough to be visible in the final application, AND NO HIGHER. 20mA is a starting point but ask more questions. Does it need to be bright enough to wake up the operator when it lights? Will the operator need to see other features of your device next to a glaring LED? Does it need to be visible in full sunlight, or is it expected to live next to a home theatre? Could you find a different part that doesn't blind at 20mA? 20mA may be a nominal forward current, but it is not necessarily the best current for your design. When using generic blue LEDs in particular, 20mA will range from uncomfortable to blinding for most indoor applications. The LED datasheet should also have a graph mapping relative intensity to current. 1 is usually at 20mA, but sufficient brightness may come as low as 10 or even 5mA (keeping in mind that consistency between LEDs can become an issue at lower currents.) 20mA is a good starting point, but I recommend setting your circuit next to your monitor or television pointed at your face. At the same time, watch a video to see how irritating it might be--especially in a darkened room. Engineering is about more than hitting the high points of the datasheet; it's about meeting the design specifications and sometimes asking what the specification should be when someone forgot to consider it. Before blue LEDs were available, the industry apparently coalesced around 20mA, creating a standard, comfortable viewing intensity. You could design your indicators around this value without worrying whether it would be comfortably visible. When blue LEDs came along, it seems the industry decided the 20mA "standard" was more important than how blindingly (literally) efficient they are at that current. Virtually every device with a blue LED that I've owned has been irritatingly bright. I have a tower fan with blue indicators that I've had to cover, so the light in my room at night doesn't keep me awake. I also owned a small audio mixer with a pair of blue 7-segment displays and a blue power LED. If the engineers put any thought into them at all, they must have assumed this mixer would only be used at outdoor festivals and the like. In a darkened theatre environment, they had to be covered up so you could see the controls around them, and your shadow wasn't burned into the back wall. Indeed, one might think marketing was involved and assumed that their device being visible from low-earth orbit would be free advertising. I have another mixer from the same brand with an orange power LED. It sits just below my primary monitor. It is just dim enough in my darkened room below a dark-themed screen that I'm not constantly distracted by thoughts of voiding the warranty to replace its resistor with a higher value. Otherwise, great video.
I respect your manner to make a video last almost 22 minutes for something basic as a "led circuit". I tried it, but my record was 6 minutes. But that was a person who did not even know what a resistor was.
I really like this video and find it very informative. Is there any chance you can put markers/chapters in the video? What I do is watch the video first then go back to the parts I don't understand and take notes, but it would really help me to know where I need to go back rather than constantly rewinding and fast forwarding to finding the parts where I need to know more. Great video!
Hyvä perusvideo! pari korjausta kylläkin. Nykyisissä mittareissa on paristoina yleensä 2 AA paristoa. Joissakin kolme. Näissä mittareissa diodin mittausjännite on yleensä max 1,5V. Vanhoissa 9V paristolla varustetuissa mittareissa 2V. Siksi niillä ei siis voi testata ledejä. ideaportissa on ohje Led testerin rakentamiseen. Toinen tavallaan virhe: ledejä ei kannata varustaa yhteisellä sarjavastuksella rinnankytkennässä, koska ledien sarjavastusten toleranssierojen vuoksi kytkennässä käynnistyy herkästi ns. ryömintäilmiö, joka sitten tuhoaa ledit. Kolmas. Ledien sarjaankytkennässä ledin kynnysjännitteiden summa saisi olla korkeintaan 70% käyttöjännitteestä. Neljäs: Minusta ohjeessa ei sanottu, että erivärisiä ledejä voi kytkeä sarjaan ilman ongelmia, kunhan muistaa edellisen säännön. Viides: puute. Jos vaikkapa pintaliitosledin kanssa kytkee sarjaan vilkkuledin, ei sarjavastusta tarvita lainkaan, kunhan virtalähteen jännite on alle 15V. Jos edellisen pintaliitosledin kanssa kytkee sarjaan loimuledin, ei kytkennässä myöskään tarvita vastusta. Edellyttäen ettei virtalähteen jännite ylitä 6 volttia! Loimuledi MAX 5V + valkoinen pintaliitosledi 3,1V = yhteensä 8,1V, jota ei saa ylittää!
I usually don't comment for videos but this video seemed awesome and work involved is absolutely great. Earlier without this knowledge of what resistors to be used I have destroyed LEDs. So from now on I am aware of that what I am going to do. Anyway, thanks for this plethora of useful information Mr. .
Fantastic! It’s a pity it’s taken me to the age of 71 to actually look at something I’ve been interested for years and hopefully it will come in handy with the Grandkids. DG New Forest U.K.
Excellent explanation! However, I always use the app LED Resistor Calculator to grab the best suitable resistor for any case. It also gives wattage and current of it. I use it instead of pen and paper to design my LED circuits.
The way you explains things are amazing. Best regards from Saudi arabia. Thank you so much for sharing this kind of of informative vedios. Thsnks again
![Felix "Unfair" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/Oswujxm2Ag0/mqdefault.jpg)
⚠️ *This video took a long time to make* if you would like to buy Paul a coffee to say thanks, link below: ☕
PayPal: www.paypal.me/TheEngineerinMindset
Channel membership: ruclips.net/channel/UCk0fGHsCEzGig-rSzkfCjMwjoin
Patreon: www.patreon.com/theengineeringmindset
Please make video on thermoelectric generator❤️
Please tell how long estimated it took to make?
K
please provide subtitles for Indonesian. thank you, hope it is useful
You explain electricity very well and I enjoy your videos. Keep going👏👏
You have legitimately the best engineering vids on the internet. Practical concepts explained in a super intuitive way.
Glad you like them!
I think this is the best explanation to the concept of resistance to battery life to LED current and voltage ratings. Thank you sirrrrr........👌 👏👏👏
🇮🇳🇮🇳🇮🇳
Great English sentences tq for channel 😀and comment guy aswell 👏👍
ikr
Because of these videos, I decide to lean more about electronics . You just explain it so well making so easy to absorb the knowledge. Thank You
Today I need my notebook and sketchbook to make the circuits. It like going to school online but better explained thanks
OMG - this was the quintessential video I needed at the exact right time in my DIY projecting building life dealing with LEDs. Thank you so much for perfectly explaining this to me.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
I've been working on a project that requires led lighting, and after many hours of trawling the Internet to find out how to calculate resistors required, my knowledge was still as clear as mud.
This video fully explained everything I needed and I now know what I need to do. Thank you for taking the time to make this, it has really helped me
Thank you for sharing this. This has got to be THE best Resistor and LED introduction lesson on the web! You have amazing sense for explaining and lecturing. Insta subbed.
Glad it was helpful!
@Fred Garvin Then maybe you can explain it better? OR watch the video AGAIN and actually learn something.
ОК
Check out NEW resistor video, everything covered! ➡️ ruclips.net/video/DYcLFHgVCn0/видео.html
Only 20 mins to learn all the essentials about LEDs for a project I am working on and it only took 5 minutes into the video to known I had found the right channel and subbed. There are a lot of good tutorials out there but for a novice like me they were too long, too short and/or left me with even more questions. This gave me all the info I needed to feel confident to move forward and plan on learning much more now. Thanks!!!
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
This was better explained than my teacher back in the day....
True
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
This video is superb! Career-wise I'm a medical microbiologist and only did electronics as a 1/2 GSCE decades ago (and I was mediocre at best). However, I'm a geek who wants to build scenery for a wargame I play and I intend to have certain portions light up. This video is so well executed I now feel confident in completing the task I set myself, thank you so much.
That feeling when you finally find the video that is exactly what you were looking for
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
The way you explain things is amazing. As an electrical apprentice, sometimes it’s difficult to grasp certain concepts even in 8 hour days in school. I can leave class and watch one of your videos and 20 minutes later I understand perfectly. Can’t thank you enough for what you do. 👊🏼
Glad to help!
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
Studied in Electronics & electrical Engineering and I can only say one thing:
BRAVO And KEEP UP the good work because these videos are way better explained than any course taken at school. You get the theory and the practical all in one!
Great job. 👍👍👍👍👍
i agree
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
I just wanted to put lights on my toy cars and now I’m here learning electrical engineering 😭
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
I just wanted to put a motor control on a mobility scooter….. I’ve been watching the engineering playlist for 2 weeks
Me wanting my toy lightsaber actually light up, now I'm doing math
Welcome to my life
This is by far one of the best, most intuitive explanations of electrical principles I have seen, and you have earned my subscription.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
I absolutely love your videos! One video is more effective than a dozen of standard lectures, no joke!
These take a long time to make so I'm very glad you're enjoying them.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
I've seen in other videos people complaining about you reposting old videos. To which is say BS.
I just bought my son(12 years) a DC supply. He's hooking up LEDs and resistors just like in your video. He's very excited by the outcome. He's showing them little circuits to his little brother, his friends, and I suggested he take them to school for a quick demo in class.
Your videos help me explain electronics to a younger generation. And I'm not a great teacher.
So keep on reposting those older videos.
Thanks.
Very glad to hear thank you
This is now the best LED guide on the internet.
yeah it is
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
¡Gracias! Thanks for the video. Very easy to understand and very useful information
I love the clear and concise way that you describe what is going on and how to understand it.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
I like how the way the lesson progressed thru the entirety of the video. Well presented and explained. Cheers!
Glad you liked it!
It was by far the best video on LED calculations I have seen. Simple, practical and well explained.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
I started with experimenting with LED strip lights, then my dad bought me a small multimeter. I don't know how to use it other than read resistances. This video really helped me figure out how to make a circuit for what I want to do. Thanks so much! glad youtube suggested this
Check our new Multimeter tutorial out ➡️ ruclips.net/video/4lAyzRxsbDc/видео.html
Such a nice coinsidence! Just yesterday i did these experiments, measurements and calculations to learn this subject. There were some questions on my mind, though. After watching your video, now everything is clear and I think I totally got it. Thanks for great videos. I do appreciate your effort!
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
*Thank U very, very much !!!!*
When I was studying electronics, they were NO LED's, but the basic calculations will always remain the same !!!! It was a very nice refresshing video of that + LED theory and practice.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
@@EngineeringMindset Thank U so much !!
0:20 nice to mention (for the beginners out there) that it *isn't the thin wire creating the light.* Instead, it is the behavior of the electrons within the (p-n junction of the) semiconductor material that emits light. So the light comes from the tiny square of material to which the wire is connected.
Correct for 100%.
Thanks
I don't think he said anything about the wire giving out the light just that the very thin connecting wire blows due to excess current that kills it.
When that wire burned it was creating light then.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
Omg, not in our class even in practical lap it wasn't explain this way, I am speechless by your content, God bless you abundantly sir, I have just understood this topic clearly.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
EXCELLENT! Best LED explanation I have ever reviewed! Great step-by-step understanding of the subject. I plan to review your other electronic based videos to learn more on the subjects.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
An absolute livesaver!! I've been using led for ages but couldn't find anything simple as to how to properly circuit them! All the led I could have saved...
Seen the new LED explained video? so much detail covered! ruclips.net/video/O8M2z2hIbag/видео.html
This is the exact video I was looking for. THANK YOU!!! I'm very new to the LED world, and something I was looking for to add to my crafting skills.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
I am literally the happiest man on the planet I found this channel I’m not joking I am a 4th year electrician in nyc and I have been dying to expand my knowledge thank you so much
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
Thanks Paul. Great video. you are very thorough and explain things in a clear and concise way. I actually feel like doing some calculations now. I'll definitely be checking out some more of your content.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
This makes so much sense. Thank you. Wired up some LEDs in parallel for a painting and I threw in some UV LEDs that required higher voltage. Used the same resistors. When I lit it up, the UV ones were really dim. I think that means I need to replace the resistor on those UV LEDs and not throw my painting out the window with all it's attached wires. :-)
❤
Check out NEW resistor video, everything covered! ➡️ ruclips.net/video/DYcLFHgVCn0/видео.html
Your vids helped me so much during my electrician Education. Thank you ^^
Glad I could help!
This is the best video of the subject i've seen. very clear, even a potato like me can get something out of this. Bookmarked and subbed.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
at 14:47 you write 500 mAh / 120 mAh = ~4 hours.
This is incorrect.
Instead it should be:
500 mAh / 120 mA = ~4 hours.
Otherwise, great video!
Thanks!
Thank you!
Just when i needed the most. thank you, the detail, the simplification, it's perfect.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
All confusions and Mistry around a circuit's voltage current and resistance is clear now, Now I can easily design my circuit, Thanks a lot for such a detailed informative video
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
Thank you for such a clear explanation of LED circuit design that has made it easy to understand!
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
You are the best teacher I've ever had besides my mom..
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
You do a really excellent job of explaining various topics! I studied electronics in college back in the late 80s-early 90s so it's fun to kind of relive subjects like this one.
One thing about LEDs that I remember that you didn't mention (and maybe things have changed over time), but the round base of an LED will have a flat spot on it next to one of the legs...this identifies the cathode side.
That's a good point. I'll include in the how LED's work video in future
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
Your videos are much better than what we learnt in the university before 15 years the best videos ever on the web.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
This video is super helpful! I really appreciate the full explanation for all scenarios you mentioned. It really answered all of my questions!
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
excellent content that answered my questions and actually leaves me wanting to learn more. I struggled with electronics at school (a long time ago!) and have learnt more here than back then. I'm forwarding this to teaching colleagues. Thank you.
idk if this is a sign but i was just struggling with rgb leds with one of my project and now i have a much better understanding on why it wasnt working out well for me
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
Thanks brother. Keep making these great videos. It helps old electrical engineers like me brush the cobwebs off.
9:23 350 ohms. Great video as always!
I think this is the best explanation to the concept of resistance to battery life to LED current and voltage ratings. Thank you sirrrrr........👌 👏👏👏
🇮🇳🇮🇳🇮🇳
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
0:14 "Little wire emitting light in a bulb, which burns out if too much current is passed through it" is suspiciously similar to incandescent bulbs (even though incandescent bulbs are in a vacuum).
If that wire was like the filament in a bulb it wouldn't have burned so easily. Even not in a vacuum. Modern bulbs use tungsten as the wire.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
@ 9:50
if we need 350 Ohms res. we could do like so:
supposing to have 2 resistors of 330 Ohms each and 2 of 390 each we can identify the 330 ones as R1 and the 390 ones as R2 and proceed by building a parallel/series scheme.
First we create an equivalent resitance by putting R1 and R2 in parallel, RA = R1//R2, that gives RA = (R1xR2)/(R1+R2) = 178 Ohms (about). Then we build another one RB = RA and so we put RA and RB in series.
Since resistors in serties just see a total resistance that is the sum of the components, we get: Rtot = RA + RB = 178 + 178 = 356 Ohms, which is around what we nedded in the beginning.
Just order a batch of 350Ω resister and wattage. Much simpler. 🙄
Check out NEW resistor video, everything covered! ➡️ ruclips.net/video/DYcLFHgVCn0/видео.html
Thank you for comprehensive tutorial as I’m fitting multiple leds in my modelling projects 😎👌 regards Fred
Just saw a YT video where LEDs in parallel each require their own resistor. For LEDs in series, one resistor will do.
Check out NEW resistor video, everything covered! ➡️ ruclips.net/video/DYcLFHgVCn0/видео.html
You helped me understand this so much better. Now I have a very good vision about LEDs and how they work. Thank you so much. Each time I watch your videos I remember why I subscribed to this channel.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
Excellence in all aspects. Thank you for sharing your skilled gift!
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
Very informative .Best video I've seen on this subject, even a74 year old like me can understand the maths.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
1:25 very good and understandable visualization of how a resitor works! Great video as always!
Question: And how would you represent voltage in this traffic jam simulation?
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
BRAVO, I HOPE YOU NEVER STOP MAKING VIDEOS LIKE THESE
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
This is so Good and well made and explaned :D
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
@@EngineeringMindset oh not yet, am going to now :D
Wow. Nothing has melted my brain that much in years
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
If you have children I highly recommend Snap Circuits
Thanks
Thank you!
350 Ohms? 9:20
I'm not done yet , but this is the best training video I've come across ! You make it all make since !!
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
You explained that there are many ways to connect the same number of LEDs, but I think you should have also mentioned that you should use the way that minimizes the amount of power used by the resistors to reduce wasted power and extend the battery life.
@@deang5622 That makes sense for only one LED, but if you have more than one LED in a circuit, whether you wire them in series or parallel makes a difference. If all the LEDs are in parallel, then you will need resistors for each branch and will be wasting a lot of power. If you can wire them in series as much as you can before going parallel, then you can reduce the resistors and thus wasted power.
Check out NEW resistor video, everything covered! ➡️ ruclips.net/video/DYcLFHgVCn0/видео.html
This is an excellent video! I had to buy a sweatshirt it was so good! NOTE: you do NOT have to look up a chart to remember the resistor numbers. All you have to do is remember the black (o) and the brown (1). After that, they follow the colors of the rainbow. Well, close enough. At least, that's how I do it. :)!
Thank you. Send us a photo and will include it in a community post. Email via website.
Check out NEW resistor video, everything covered! ➡️ ruclips.net/video/DYcLFHgVCn0/видео.html
@@EngineeringMindset Hi folks - nice that you reply to the comments - thanks! NOTE: in the new video "Because" is not spelt correctly at 17:30 minutes in. Say - got my Engineering mindset hoodie. Comfy! Couple thoughts tho - 1. any chance they design will be big on the back, and a tiny logo on the front, in future versions? 2. With electronics the risk of fire is small; that's true. But I often use these type clothings in maker applications where I'm welding. Synthetic fibers melt instead of ignite, which makes them a higher burn hazard. Any chance future versions (or options) will be made of natural fibers only? Again - thanks for the great videos and ideas! - Antonio
Thanks, well spotted. Added correction to video description.
Glad to hear you like the hoodie. Large additional logo on back might be possible, see what I can do for next round. Material is a good point, currently Teespring do the manufacturing and shipping as I would otherwise need to buy the machines, stock, storage space and take time out from video making to post the items, send tracking and handle returns/lost items so the material is slightly out of my hands although I have been trying some other suppliers, I'll see what the materials and quality is like and perhaps move to them or link to them.
it always confuses me if people describe the side where the electrons are coming from as the positive side.
We were taught + to -flow was called "conventional electron theory"
I am much more frightened by the people who really see the electrons :)
17:45 into the video ( it says 0.06 squared * 116.6 Ohms = 0.49W ) my calculator said 0.41976 . Thanks for the video it helps a lot all your videos are fantastic
Never knew what i did was a child would escalate so quickly
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
This tought me so much. Seriously the best video I've watched on this topic!
1st year in Electronics: "Lets look for a 381,4 Ohm resistor or it may fail!!"
10 years in the market: "Just put a 1K 0603 on it and lets call it a day"
How true, how true!
Mind you, I have seen a friend (who has a degree in the subject) teach a class using Arduino's put an LED directly on to a data out pin.
5 volts on to a red LED without any resistor.
His comment to me was, it does not matter, it works.
It was at that point I gave up!
And a dim LED....
@@stevemorse5052 Some devices cannot source much current, so in effect the limit resistor is inside the device connected to the LED.
Check out NEW resistor video, everything covered! ➡️ ruclips.net/video/DYcLFHgVCn0/видео.html
Thank you so much, high schooler here, needed the video for a project ( a wind mill that produces electricity) instead of the battery will use a dc motor as a generator. Hoping it works
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
Congratulations. you have worked very hard. this seems obvious. and it was a very detailed and flowing narration. It has been a resource that will be used for years. Not just coffee, I'll make you Turkish coffee after dinner.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
6:40 I'm going to disagree here. I know this is a first-approximation, introductory-level video, but these things get ingrained early and stick around after one should know better.
TLDR:
Your LED current should be high enough to be visible in the final application, AND NO HIGHER. 20mA is a starting point but ask more questions. Does it need to be bright enough to wake up the operator when it lights? Will the operator need to see other features of your device next to a glaring LED? Does it need to be visible in full sunlight, or is it expected to live next to a home theatre? Could you find a different part that doesn't blind at 20mA?
20mA may be a nominal forward current, but it is not necessarily the best current for your design. When using generic blue LEDs in particular, 20mA will range from uncomfortable to blinding for most indoor applications. The LED datasheet should also have a graph mapping relative intensity to current. 1 is usually at 20mA, but sufficient brightness may come as low as 10 or even 5mA (keeping in mind that consistency between LEDs can become an issue at lower currents.)
20mA is a good starting point, but I recommend setting your circuit next to your monitor or television pointed at your face. At the same time, watch a video to see how irritating it might be--especially in a darkened room. Engineering is about more than hitting the high points of the datasheet; it's about meeting the design specifications and sometimes asking what the specification should be when someone forgot to consider it. Before blue LEDs were available, the industry apparently coalesced around 20mA, creating a standard, comfortable viewing intensity. You could design your indicators around this value without worrying whether it would be comfortably visible. When blue LEDs came along, it seems the industry decided the 20mA "standard" was more important than how blindingly (literally) efficient they are at that current.
Virtually every device with a blue LED that I've owned has been irritatingly bright. I have a tower fan with blue indicators that I've had to cover, so the light in my room at night doesn't keep me awake. I also owned a small audio mixer with a pair of blue 7-segment displays and a blue power LED. If the engineers put any thought into them at all, they must have assumed this mixer would only be used at outdoor festivals and the like. In a darkened theatre environment, they had to be covered up so you could see the controls around them, and your shadow wasn't burned into the back wall. Indeed, one might think marketing was involved and assumed that their device being visible from low-earth orbit would be free advertising. I have another mixer from the same brand with an orange power LED. It sits just below my primary monitor. It is just dim enough in my darkened room below a dark-themed screen that I'm not constantly distracted by thoughts of voiding the warranty to replace its resistor with a higher value.
Otherwise, great video.
Check out NEW resistor video, everything covered! ➡️ ruclips.net/video/DYcLFHgVCn0/видео.html
Seen the new LED explained video? so much detail covered! ruclips.net/video/O8M2z2hIbag/видео.html
this video was so helpful
I can't believe this is for free
amazing work thank you
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
The perfect first step video. For me, a long neglected refresher course!! Thanks for this excellent video!!
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
Very informative. I used your diagrams to set up some circuits to play with. Thank You!
I respect your manner to make a video last almost 22 minutes for something basic as a "led circuit". I tried it, but my record was 6 minutes. But that was a person who did not even know what a resistor was.
Check out NEW resistor video, everything covered! ➡️ ruclips.net/video/DYcLFHgVCn0/видео.html
So clearly explained and illustrated! I also like the moderate pace of your speaking. Thank you.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
So helpful! I feel way more confident tinkering now. Thank you
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
A little nit picky, but in 14:46, what you meant is, "Battery life = 500 mAh / 120 mA," not "battery life = 500 mAh / 120 mAh."
I really like this video and find it very informative. Is there any chance you can put markers/chapters in the video? What I do is watch the video first then go back to the parts I don't understand and take notes, but it would really help me to know where I need to go back rather than constantly rewinding and fast forwarding to finding the parts where I need to know more.
Great video!
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
I must say, an excelent movie. It starts boring, but later on you provide SO MUCH interesting information and I thank you! Great job :)
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
This channel is priceless ✨❤️
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
The resistor color coding part remembers me of my electronics class back in 3rd year high school. Nice video.
Check out NEW resistor video, everything covered! ➡️ ruclips.net/video/DYcLFHgVCn0/видео.html
Very thorough and easy to follow for my Dad when he's lighting up his model railway.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
Hyvä perusvideo! pari korjausta kylläkin. Nykyisissä mittareissa on paristoina yleensä 2 AA paristoa. Joissakin kolme. Näissä mittareissa diodin mittausjännite on yleensä max 1,5V. Vanhoissa 9V paristolla varustetuissa mittareissa 2V. Siksi niillä ei siis voi testata ledejä. ideaportissa on ohje Led testerin rakentamiseen.
Toinen tavallaan virhe: ledejä ei kannata varustaa yhteisellä sarjavastuksella rinnankytkennässä, koska ledien sarjavastusten toleranssierojen vuoksi kytkennässä käynnistyy herkästi ns. ryömintäilmiö, joka sitten tuhoaa ledit.
Kolmas. Ledien sarjaankytkennässä ledin kynnysjännitteiden summa saisi olla korkeintaan 70% käyttöjännitteestä.
Neljäs: Minusta ohjeessa ei sanottu, että erivärisiä ledejä voi kytkeä sarjaan ilman ongelmia, kunhan muistaa edellisen säännön.
Viides: puute. Jos vaikkapa pintaliitosledin kanssa kytkee sarjaan vilkkuledin, ei sarjavastusta tarvita lainkaan, kunhan virtalähteen jännite on alle 15V. Jos edellisen pintaliitosledin kanssa kytkee sarjaan loimuledin, ei kytkennässä myöskään tarvita vastusta. Edellyttäen ettei virtalähteen jännite ylitä 6 volttia! Loimuledi MAX 5V + valkoinen pintaliitosledi 3,1V = yhteensä 8,1V, jota ei saa ylittää!
Seen the new LED explained video? so much detail covered! ruclips.net/video/O8M2z2hIbag/видео.html
20:45 for 4 and 5 band resistors, how do you know which way to look at them? I.e., how do you know which end is the first band?
Check out NEW resistor video, everything covered! ➡️ ruclips.net/video/DYcLFHgVCn0/видео.html
Thank You 👍🙏👍 🇮🇩, Best video to learn about LED Circuit Design - How to design LED circuits 👍
Seen the new LED explained video? so much detail covered! ruclips.net/video/O8M2z2hIbag/видео.html
@@EngineeringMindset Thank You 🙏
Better than my HNC tutor! Many thanks for an informative and easy to follow video!
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
I usually don't comment for videos but this video seemed awesome and work involved is absolutely great. Earlier without this knowledge of what resistors to be used I have destroyed LEDs. So from now on I am aware of that what I am going to do. Anyway, thanks for this plethora of useful information Mr. .
Check out NEW resistor video, everything covered! ➡️ ruclips.net/video/DYcLFHgVCn0/видео.html
Possibly the first subject on electronics I have understood and learned from. Thanks.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
Fantastic! It’s a pity it’s taken me to the age of 71 to actually look at something I’ve been interested for years and hopefully it will come in handy with the Grandkids. DG New Forest U.K.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
This is the best explanation I have ever seen. Thanks
Excellent explanation! However, I always use the app LED Resistor Calculator to grab the best suitable resistor for any case. It also gives wattage and current of it. I use it instead of pen and paper to design my LED circuits.
Can you give link please.
Check out NEW resistor video, everything covered! ➡️ ruclips.net/video/DYcLFHgVCn0/видео.html
You explain things in such a way that they appear very simple. Great teaching.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
fantastic, i learned a lot about electronic concepts from this single video
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
By far best explanation I have seen on this topic
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
THANK YOU!!! I am using LEDs in cosplay for the first time and you broke this down for me so it was more easily understood. Thanks again.
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
Really both informative and interesting video! So cool! 🥰
The way you explains things are amazing.
Best regards from Saudi arabia.
Thank you so much for sharing this kind of of informative vedios.
Thsnks again
Seen our new how LEDs actually work video? ruclips.net/video/O8M2z2hIbag/видео.html
Beautifly thoroughly explained! It answered 100% of my resistor questions thank you!
Check out NEW resistor video, everything covered! ➡️ ruclips.net/video/DYcLFHgVCn0/видео.html