LED Complete Basics for Beginners
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- เผยแพร่เมื่อ 16 มิ.ย. 2024
- LED Complete Basics for Beginners
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In this video we cover the basic principles of LEDs work and how to use them. We look at the 3 key things you MUST know to work with LED's: Polarity, Forward Voltage, and Current. Knowing the forward voltage and current will allow you to choose the right resistor to keep your LED from blowing up.
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I always watch the beginner videos because I always learn something that I missed before.
Me too. Never over estimate your knowledge on a subject. I learned several things from this beginner video.
@@judo-rob5197 When I was getting my Computer Science degree, we had a book called Programming Proverbs. It was a small about 6x9 inch paperback loaded with good advice. One of the proverbs that I always remembered was "Re-read the manual". The point made was that there is a lot of stuff that goes over your head the first time around. In a lot of cases that is because you haven't a clue how to use a particular feature. After you have been at it for a while, the feature in question may be applicable to something that you are trying to do. Case in point: I had not been aware of how to calculate the current limiting resistor value before I saw it here. I just always used what I picked up a long time ago which was the rule of thumb to use something around 270-330 ohms. That, I now understand to be because everything was 5V TTL back then and those values worked out for the LEDs that we were using.
Absolutely agree. The anvil explanation was new to me!
The man's a natural born teacher. Outstanding tutorial for a beginner.
Nicely explained. Please ensure the LEDs are laid to rest with full honours. They paid the ultimate price in the quest for illumination...
It never hurts to go back to the very basics - thanks Paul
Excellent video for beginners, and as a refresher for those with a bit more experience. And I like the use of the white board instead of paper for the diagrams and calculations.
I like to say “if I haven’t seen it, it’s new to me!”
I’m other words, I’m going to watch because I know I will learn something. Love your vids! Keep up the great work. Peace!
I think you accidentally mis-stated Ohm's law as V=I/R at around the 10 minute mark, and at least once later. V= I x R, of course. You still get a thumbs up, though.
Finally a simple way of explaining where the resistor goes for a LED. I really appreciate the help. Thanks Paul and stay healthy.
Really appreciate the patient explanation and demo. Thankyou.
My reason for looking up electronic tutorials is because I wanted to understand what might go into modifying a radio to add back lighting for tuner dials and to add mp3/ Bluetooth modules to enhance radios.
Lots of good stuff in these videos to show why I shouldn't bother buying a solder kit. Better to find that out before investing!
This is the best, most clear video I’ve come across on this subject. Excellent job and thanks very much.
As someone who hadn't thought about annodes and cathodes in 5+ years (GCSE chemistry) and is trying to learn electronics, this is so useful! especially as i don't understand your other vids as I have no clue what's being said, but I'm learning!!
Fantastic video, very concise and informative. You answer one of the most basic questions for enthusiast looking for a simple answer regarding LED's. I subscribed and going to go through your other videos, little refresher never hurt anyone, even someone whos been into electronics for 30 some years.
I believe you touched on the best info for the basics and learning tips and tricks.this will help so many people
Great video, thanks, Paul! I think we all learned something, and some of us learned a lot!
I’m glad you did this video. I know there are a lot of people out there that will need it. I enjoy all of your videos even if I think I’m very familiar with the topic… You still teach me something every time!
I appreciate that!
Thank you so much for this video, I've got an LED project I'm going to work on and gathering as much information as I can on it before I start and this was very good for setting some ground rules for me.
Your videos are very useful and simple enough to understand. Keep up the great work. PEACE!!!
Great stuff! Love the "Basics" videos.
Sweet 👌 Always something to learn or refresh. Thanks Paul
man i just added this to my favorites. Excellent tutorial. Thank you
Grate video Paul and thank you.
Watched the whole thing, great beginner video. I learned the names of the inner workings too.
It may be basic but this was VERY good. A lot of things work, but this was a huge help to really understand the correct way to use LEDs. Thank you for your efforts.
You have the gift of a good teacher in making complicated concepts look simple. Regards from Singapore 8/8/2021.
Absolutely Brilliant introduction, so clear and concise.
Many thanks and Kind Regards
From the U.K.
Excellent teacher . Keep up the good works, Sir.. thank you.
Great explanation! Thanks for making the vid and sharing your knowledge.
Hi Paul:
Finally a explination in laymans terms. I'm going to make up a chart from you drawings as a reference for future LED wiring. Thank you so much.
Chuck
Extremely useful as I’m a beginner. Thanks for sharing your knowledge and videos Artie 👍
Thanks Artie, I'm here if you have any questions. Feel free to email arduino0169@gmail.com
Thank you. Very helpful.
This was great! Thank you. I am a complete beginner. I am working on projects & this really helps.
You're very welcome!
Perfect presentation Paul. 🌟
Thank you for your teaching
Thanks for anther great educational video.. there is always something to learn from you eg the internals of a diode. I know the basisc of electronics but i often dive into the beginners titled vids to see what knowledge pple pass on. Cheers from Down Under..
Excellent presentation style. Thank you so much.
Thanks for the info, very helpful
Good job Paul
Thanks alot
Good explaination and easy to learn
Thanks for the valuable lesson as I'm new to electronics.
Today I learned the names of the l.e.d. 👍 plus the basics. Thank you. 😎
Great video, I happened to learn a thing or two about LEDs that I somehow never seem to come across. Thank you, and for all the videos you put out which have tons of knowledge for beginners to your Big Clive's 😂👏🏼
Thanks for watching!
Paul, well done ! This could be the beginning of a ," NEW TO ELECTRONICS CHANNEL " . Thanks for what you do :)
Excellent video! Thank you for explaining so clearly. Wish I'd had you in school!
Great instruction, thanx!
I like these types of videos. I am a little smarter afterwards. Please keep up the good work.
Thanks for the video. Keep it up. 😊
Thank you sir. Very educative.
Best teacher
Many thanks
This is more informative then them other vids. Thank you
Nice basic video. Thanks
Great video Paul!!!!! as usual!!!! Keep up the good work!!!
Thanks! Will do!
Thanks, my white led was shutting down my orange and green in a parallel circuit. I didn't know the advanced voltage was even a consideration with LEDs. awesome thanks.
Keep up the good work
Very nice explanation and demonstration Thank you. iwant to watch your next video,
Awesome and thanks!!!
Very great video
good stuff thank you for sharing.
Got to love LED's my favourite component
these are awesome. now do capacitors. thanks Paul
Thank you!
I love these basics videos
Nice explanation 👌
A good refresher is always nice to have. Yes I watched anyway... Lol
Thanks for the video!
LLAP
Very well explained. I Build wooden model ships and I'm trying to learn how to add lighting.
Good job on this. I am retired electric lineman and now wondering what kind of projects I can do to keep my little brain working.
Thank you for the good lesson on LEDs. Do you have any suggestions on power supplies? Thanks again,
thank you so much, total noob here and vids like this really help
Great vídeo 👏👏👏👏
Thank you Sir! 👍😎
great video, nice to be refreshed on ohms law .. may i ask a question .... if i was using 9 led's, in series .. do i need a resistor for each led? or does 1 resistor work the same and what wire needed for a 9v current .... any help would be appreciated , thanks.
So nice thanks sir
great video.ez to learn the way you do it. can you do or explain to me how this would work if youre powering a clock LED bulb under AC power 120V? i calculated a resistor like 11,450. is that possible. did I do it right?
Great stuff
Thank you
Wow, you really hear and pay attention to the comment section and you replaced the notebook with a whiteboard (which was a little bit unnecessary imo), hats off to you Sir!
Nice video. Really helpful. Only criticism would be the way you state Ohm's law. V DOESN'T equal I over R. When you did the calculation you used it correctly: V= IR
Good tutorial Paul;)
Thank You Sir.
Feed me more..
I think like a lot of people, I have somehow managed to fudge my way through life without ever learning the true basics of LEDs... thank you for putting this right.
i am trained electronics engineer but love review of basics and check details i might have misse3d new and refresh thanks
Thank You 😊
Great refresher for something that is taken for granite.
Thanks for this video. Could you do the next stage ,that is , lets say, running 4 of the same Led's in the circuit. Daisy chained.. against running the 4 in parallel?? I would find that very helpful. Best regards Don Codman
good video.
Love the vids
Thank you for this information. how do I calculate the power needed to make a sign like great Scott. I want to make three signs. Man cave, she shed and war room. Is it better to run them parallel or series? How do I figure out what voltage I'll be needing?
I think you will want to place them in parallel, with one big current limiting resistor(depending on what voltage you're feeding it), and feed it enough current to power all the LEDs (say, 100 LEDs at 10mA each is 1A).
My 'UV' leds I harvested from a nail polish curing thing have a forward voltage of 7.3 volts. measured on a keithly dmm-6500 cause that seemed high lol
as always an excellent beginners guide!
You always manage to explain things in such a wonderfully clear & calm manner it makes it a pleasure to watch & listen to
Stay Safe!!
P.S. When you get the time can you put the gerber files for the APC + LDR on PcbWay please?
I really like the whiteboard a nice touch. Just had my right hand operated on so probably won't comment much for a while. Thanks for the video!
You are always with me in spirit George! Heal up fast buddy!
Thank you my friend!
Something I learned from AvE (I think) years ago that lets you instantly remember which lead is positive on LEDs or electrolytics: you can create a + sign with the longer lead by cutting the extra length off and turning it sideways.
Physical memory tricks like that have really helped me along the way. Another one I just remembered is how to remember which wire is live and which wire is neutral in US home wiring: put the two wires out in the sun, the black one gets hot and the white one stays neutral.
I always check the anode, you can see by its size in the led which one is the anode and which one is the cathode.
In the real world component leads are often trimmed so you cannot count on one being longer than the other. So you're better off looking inside the LED to see what polarity it is. There you just remember the bigger bit is the ground. I also equate the bigger bit to being the "land". I've heard of anvil and post but that has no meaning to me. Land on the other hand is earth or ground.
As a retired sparks I found this very informative many thanks
you are A genius man 😊
I am such a beginner in electronics. Thanks for being so very clear. There's one thing I am just not able to get my brain around. I understand that it is understood that the conventional understanding is that electricity flows from positive to negative and not from negative to positive. So hooking up an LED or diode would then be from negative to positive in-order for the actual current to flow from negative to positive but that is not the way you were hooking up your diode. Please can you once and for all clarify this misconception for us. Thanks. Oh, when you say "forward voltage". Does this mean that this is the minimum voltage that the LED will light up? Or is this the loss of voltage as the current goes across the LED? Thank again for your video post.
Interesting,. Looking to find a video to explain the resistor size needed to drive some 0.5W LEDs I just got off of allyexpress. Sadly only information I've been given on them is that they are 1/2Watt, and voltage. How do I convert Watts to amps
Always good to teach by example and include math!
I had a friend that hated LEDs. He tried to use them in his model railroad and they'd always blow up on him. I guess he didn't get the whole thing about limiting the current?
Thank you!♡♡♡
🤜🏻👍🤛🏻
Hi kindly advise how to produced a bright led like traffic lights . Green steady on. Yellow blinking and red blinking. Thanks
Thank you, Uncle Paul
Brilliant
I remember it by saying the first letter in the alphabetical order is positive.
A is before C this seems to work with lots of things.
I also tend to use a small battery 3235 to test.them before I soilder.them
What’s the difference between common cathode versus common anode LEDs please? I take it one works the way you show and the other is reverse of that? Am I correct in thinking this?
Thanks for the video! This really answered many questions I had on the topic.