LEDs - Light Emitting Diodes - Basic Introduction

This electronics video tutorial provides a basic introduction into LEDs also known as light emitting diodes. It discusses the polarity of an LED including how to connect them. The anode is the positive terminal and the cathode is the negative terminal. It discusses topics such as the forward voltage drop of the LED and its relationship to the current flowing in the circuit. It also mentions the luminous intensity of the LED as measured in mcd or millicandela.
What Is a Diode?
• What Is a Diode?
Full-Wave Bridge Rectifiers:
• Full Wave Bridge Recti...
Voltage Multiplier Circuit:
• Voltage Multiplier Cir...
Light Emitting Diodes:
• LEDs - Light Emitting ...
Power Dissipation In LEDs & Diodes:
• Power Dissipation In R...
LED Resistor Value:
• How To Select The Resi...
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Potentiometers - Variable Resistance:
• Potentiometers - Basic...
LED Dimmer Circuit:
• LED Dimmer Circuit - B...
Thermistors - Temperature Sensors:
• Thermistors - NTC & PT...
Zener Diodes:
• Zener Diodes
Voltage Regulators - Zener Diodes:
• How To Make a Voltage ...
Zener Diode Solar Cell:
• How To Make a Solar Ce...
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Power Zener Diodes - Voltage Regulation:
• Power Zener Diodes as ...
12V LED Battery Level Indicator:
• 12V LED Battery Level ...
Reverse Polarity Circuit Protection:
• Reverse Polarity Circu...
High Voltage Surge Protection Circuit:
• High Voltage Surge Pro...
AC DC Polarity Tester Circuit:
• AC DC Polarity Tester ...
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DC to AC Reverse Polarity Circuit:
• DC to AC Reverse Polar...
Varactor Diodes - Voltage Capacitors:
• Voltage Controlled Cap...
Final Exams and Video Playlists:
www.video-tuto...
Full-Length Videos and Worksheets:
/ collections
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LED Assortment Kit: amzn.to/3wG4C1q
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[@Stefura]

Audio gets cut off at 9:52 just to let you know

[@Roger-di3ib]

Could you do a video on mass point in geometry please?

[@moonson8804]

Another great vid, thanks man

[@BensProjectHub]

bruh im so lost i feel like im dumb in math i never paid attention in high school now im in college first semester and im lost i literally had to drop college algebra cuz i dont know nothing do you have any tips where to start or which of your videos i should start watching all i know how to do is multiply add and subtract and divide i need to catch up im wayy behind i know that but i will catch up no matter what it takes i just dont know where to start plz answer i really do need help

[@naniidoodles]

I'm not that much of a smart person either but what has helped me is that I keep a planner on what specific topics I study everyday. It's really helpful and has forced me to actually make time to study for at least 1-2 hour on most days. You can ask your friends for help as group study sessions are useful too! (make sure they're interested in studying the topic as well to avoid time wasted talking about unrelated stuff) Borrow textbooks from libraries! They have contents in the first few pages and you can identify the topics/subtopics you're weak in and work on them, watch videos on them too Spend less time on indulging in things that won't help (just an example you're invited to go out to a party when you could use that time to be more productive in your studies) Also please don't be discouraged, it's never too late to get better

[@BensProjectHub]

sqrqh thank you so much i will do so

[@lestervillazorca337]

If you are not a textbook type of learner, I suggest you might want to see Khan Academy. They provide mathematical explanation in almost all areas involving math. Also the topics were all arrange accordingly which for me serve as a huge help. Hope you find his helpful, sir.

[@badii]

Bruh don’t worry dawg, imma help you cuz I feel ya. First if you know basic addition substraction multiplication and division, you gotta know PEMDAS, which is basically the order you of how to do an operation. Always first solve inside the parenthesis, then exponents (which is like the number multiplied by itself x amount of times), then multiplication nd division are done equally, whichever comes first left to right you do it. Then it’s the same for addition nd substraction. After that learn about fractions and decimals. Then you could start doing stuff like x^2=x+5, what is x. After that whole stuff learn calculus, and that’s about it. It sounds hard but it ain’t as much as you might think. Hope it helps

[@ItsShadew]

How do led strips work? Why are you able to turn on specific sections or send patterns through it without just having on and off on the entire strip? I saw someone make a 8x8x8 cube with an arduino but I don't understand how each led can be individually powered when they are all connected.

[@carlosm.sierra1465]

With a controller chip, a little processor that receives information of which lights to turn on and which to leave off, and it only sends energy to the LEDs that its told to turn on by a determined program

[@carlosm.sierra1465]

With a controller chip, a little processor that receives information of which lights to turn on and which to leave off, and it only sends energy to the LEDs that its told to turn on by a determined program

[@VJ-yk9dk]

Wow. what an explanation.

[@successthruknowledge]

So is the same thing true for silicon diodes and germanium diodes?

[@aliso-pv7ll]

JG, would you do a video on decibels for the novice? Thanks for your great information.

[@SolomonOkojie]

Pls wot type of writing tablet do you use and wot type of microphone too...I would be starting my own youtube channel on vocabulary development by 2020 march. Pls do respond...I need your suggestions

[@saqibbari4978]

Please make a vedio of material balance

[@farihamahmood1253]

can you make a video of "Amino Acid Stereochemistry R and S vs D and L Configuration" Will highly appreciate my exam is next week =D

[@stas5951]

Fariha mahmood that shit is easy

[@PunmasterSTP]

How did your exam go?

[@farihamahmood1253]

@@PunmasterSTP it was a year ago but yeah got an A+

[@PunmasterSTP]

@@farihamahmood1253 Awesome! Was that in ochem 1 by any chance?

[@nightcorelove775]

@@farihamahmood1253 Congrats dude. SO happy abt ya

[@zoiloblanco3413]

hi may i ask ,? what will happen to a 3 red leds connected in series powered by 5 vdc and 500 mA current?

[@phantomgaming5199]

how is there a voltage drop across diode wheb it is forward biased? or is it reverse biased because from diagram its forward biased

[@vaynemarksyou6213]

Even in forward bias there is a voltage drop but its usually small(0.3V for germanium diode and 0.7V for silicon diode).Here we have a LED so its a bit higher.

[@samad4942]

With this account, the efficiency of LED lamps is very low! For example, in the last row of the table, the resistance is 82 ohms and the current is 29.8 mA and the LED voltage is 3.07 volts, which results in a power consumption of resistance is R i^2= 0.07 watts and a power consumption of LED is Vf i=0.09 watts. That is, a significant amount of energy is consumed by the battery in the resistor.

[@sandrambizi6624]

I love this science

[@babarazamsucks]

Sandra Mbizi So do I.

[@stas5951]

So do I

[@aselim20.]

I watched it.

[@kkhan5834]

greatttt

[@highseassailor]

I love you

[@awzflyhigh4795]

HI mister im so cool that i take a 3 second pause between each phrase cuz I'm reading off some notes

[@jacobvandijk6525]

As always, you like the math of problems, but you didn't tell us anything about how a LED really works.