- published: 22 Oct 2016
- views: 49528
A light-emitting diode (LED) is a two-lead semiconductor light source. It is a p–n junction diode, which emits light when activated. When a suitable voltage is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescence, and the color of the light (corresponding to the energy of the photon) is determined by the energy band gap of the semiconductor.
An LED is often small in area (less than 1 mm2) and integrated optical components may be used to shape its radiation pattern.
Appearing as practical electronic components in 1962, the earliest LEDs emitted low-intensity infrared light. Infrared LEDs are still frequently used as transmitting elements in remote-control circuits, such as those in remote controls for a wide variety of consumer electronics. The first visible-light LEDs were also of low intensity, and limited to red. Modern LEDs are available across the visible, ultraviolet, and infrared wavelengths, with very high brightness.
A tutorial on the basics of using LEDs (light emitting diodes). Polarity, forward voltage and current are discussed. 300 LEDs for $13: http://www.amazon.com/exec/obidos/ASIN/B00UWBJM0Q/afromods-20 500 resistors for $12: http://www.amazon.com/exec/obidos/ASIN/B008MH97I4/afromods-20 Previous video on volts: http://www.youtube.com/watch?v=TBt-kxYfync Website: http://www.afrotechmods.com Twitter: http://twitter.com/afrotechmods Facebook: http://bit.ly/2cMrAeu
3 Awesome Ideas with LEDs. LEDs are amazing electronic devices that can be used to create many awesome and creative lighting gadgets and life hacks. LED Egg Light Awesome idea to make a night light by insert an LED inside an egg. LED tube light Use a hot glue stick to make a powerful LED light at home. Battery less Torch A amazing lifehack to glow LED without batteries just with the help of a motor. Welcome to "GOODTECH - Creativity and Science". This channel is dedicated to making various creative and innovative projects, RC toys, incredible gadgets and awesome LifeHacks. Subscribe for more videos : https://www.youtube.com/c/GOODTECHCreativityandscience?sub_confirmation=1
Take a tour through the world of the light-emitting diode and learn - who invented it, how to use it, and how to make your own. audio & video by Collin Cunningham Makezine.com Learn more: http://makezine.com/video/make-presents-the-led/ More Make Presents: The Resistor: http://www.youtube.com/watch?v=VPVoY1QROMg The Capacitor: http://www.youtube.com/watch?v=ZYH9dGl4gUE Ohm's Law: https://www.youtube.com/watch?v=-mHLvtGjum4 The Inductor: https://www.youtube.com/watch?v=STDlCdZnIsw The Multimeter: https://www.youtube.com/watch?v=BW3Wj7UD-_s The Oscilloscope: https://www.youtube.com/watch?v=SxZWcku_Sw0 The Integrated Circuit: https://www.youtube.com/watch?v=uSRIc-sEgPw The Diode: https://www.youtube.com/watch?v=AqzYsuTRVRc The Transistor: https://www.youtube.com/watch?v=-td7YT-Pum...
You can now buy me cake and things to take apart at:- https://www.patreon.com/bigclive I was looking for some 100W LEDs to use in my exiting 20W lights to spread the dissipation better and hopefully create very long lasting lights. I bought some from two different ebay sellers based in China and deliberately tried two different price ranges to see how price affected quality.
LED strips look amazing and apparently don’t cost that much at all. Get them on Amazon - http://geni.us/ledstrip MS Tech Posters (best designs ever) - http://www.mstechshop.com Twitter - http://www.twitter.com/mstechyt Instagram - http://www.instagram.com/mstechyt For Business Inquires - matthew.alex.schaefer@gmail.com Song - Electro-Light - Symbolism [NCS Release] Link - https://www.youtube.com/watch?v=__CRW...
In this overview I test out whether it is worth it to buy the cheaper 10 watt LEDs from China (Ebay), and some of the other LED options to integrate with your projects. LEDs & Tools Used (Affiliate Links) Hakko Soldering Iron - http://amzn.to/1RZgXYw Variable Power Supply - http://amzn.to/1nDJbez Eye Protection Glasses - http://amzn.to/1K1LaTG Remote for LED strip lights - http://amzn.to/1Qjp92i LED Strip Lights - http://amzn.to/1KuKMYW Waterproof Strip Lights - http://amzn.to/1nDIqSG Loose LEDs - http://amzn.to/1RZgQfE 10 Watt LED Options - Choose One 1) 10 Watt LED w/ Driver - http://amzn.to/1nDJq9h 2) a - 10 Watt LED, 30 volt req - http://amzn.to/1KuLEga b - Voltage Booster - http://amzn.to/1RZhLwH How to find Linn @ Darbin Orvar http://darbinorvar.com/shoppe http://yout...
You can find leds for sale in this link - http://www.epicphysics.com/practical-physics/how-leds-work/ A brief video showing how LED lights work. LED lights work using one of the simplest light emitting diodes. This diode is silicone based. It has both a positive material and negative material sandwiched beside each other, when they are combined they create a p-n junction. This p-n junction is the area in which the light is created. The lens of the LED then refracts this light into a spherical illumination. led lights/lamps can usually be powered by 12v and are used in the auto and automotive industry. LED lights are expected to improve efficiency and light output significantly over the following number of years, they should eventually totally replace the incandescent light bulb.
I'm not sure of the seller of this LED mislead me by telling me it was for UK 240V electric, but when I tigged on the solders it banged really loud. I do not recommend bying LEDs from bad people becauise they go boom and may scare you. And for those who actually read down to this level... The actual result of hooking a (really crappy) 100W LED directly across 240V was so boringly controlled that I had to beef it up a bit for a second take with hidden resistors underneath for some sparks and pops. See if you can spot them as I completely lose control of the LED at least twice during the video. No good quality LEDs were harmed in the making of this video. Mainly because I can't get any.
How to make an L.E.D infinity mirror. Really cool illusion piece and pretty simple to make! Instagram- http://instagram.com/andy_elliott_/ Twitter- https://twitter.com/Mist8kofficial Facebook- http://www.facebook.com/mist8kspage G+ http://www.gplus.to/AndyElliott L.e.d's- http://www.lightingever.com/?utm_source=youtube&utm;_medium=andy&utm;_campaign=youtube_andy_strip My channel is all about cool science experiments, projects and other cool stuff! Subscribe for more! Music- http://incompetech.com/ and freesfx.co.uk
Welcome to this LED-supplies.com video on how to cut, connect and power LED Strip lighting. View the video on the LED strips section of our website at : https://www.led-supplies.com/led-strips/ In this video, you will find out: - The tools needed and the correct way to cut LED strip lighting, maintaining full LED bulb functionality. - How to connect your LED strip using with the pre fitted connector https://www.led-supplies.com/led-installation-accessories/cables/2-1mm-socket-to-200mm-cable-bare-ended-22awg/ - Soldering onto the LED strip. - Using a clip-on connector to connect your LED Strip https://www.led-supplies.com/led-installation-accessories/cables/quick-connect-power-cables-for-led-strip-lighting/ - How to get a quality finish and protect your LED strip with aluminium extru...
Extinguish LEDs
Visual displays get phased out, upgraded with ease
Jumper packin' baby, ten fingered USBs
You wanna megabyte this? Alright
But we might just to have fight it out over 88 Keys
A hundred bass lines from a swarm of Stumblebees (yeah!)
Buzzin' in your ear, made you thinking maybe these
Autobeats ain't exactly what they seeeeem!
It's a heavyweight scene the way we hold it
Every last data molecule's locked down and double bolted
Storm your local area network and fold it
Autograph your IP, track it and decode it
Spyware's got you kiddies begging for bandwidth
You sittin' with some Autobeats you know you can't stand with
We're sharper than the scissors those little kids ran with
This ain't Space Invaders one life is what I began with
If it were, I'd take 'em out by the pixel
Smack up the beat like my name is Matt Nickels
Pack up your grief, I don't need that stuff
Survive on AC Adapters and dope-ass cuts.
(hook)
Real life is a little more than you expected,
Too hectic, got you feeling all rejected
Run around spinning like your hard drive's infected
Feelin' disillusioned, down low and dejected
Unaffected, always been to eclectic
Can't believe that crazy cowboy that they elected
Password accepted
We never rock a beat unless it's wholly certified
No drum-machine, Grimrock bangs it out live
Don't take it outside like those thugs with guns
Take it to the stock market rockin' mutual funds
See, Powerthighs analyzes algorithms for fun
Spot him at the brain game, man you know that kid won
Dehydration photosynthesis, it's the Optimus
The antithesis of your every day
A lyricist who's disturbed, I'm not okay
I've got too many passwords in my brain
I need my memory erased, can't take it
I need these data ports wiped clean, left vacant
Can't live another day with this binary code
Cloggin' up my brain, slowing down my system getting old
Give me the alphanumeric antidote
And I swear that I'd delete every line that I wrote
Yo I'd be stoked, I can't write anyway
Melt me down to scrap metal, mold a couple ash-trays
Positronic pathways are getting worn
I'm absolutely certain I'm not getting reborn
(hook)
Real life is a little more than you expected,
Too hectic, got you feeling all rejected
Run around spinning like your hard drive's infected
Feelin' disillusioned down low and dejected
Unaffected, always been too eclectic
Can't believe that crazy cowboy that they elected
We got the fattest pipes, so you're in the net connected
Super-power servers can't leave them unprotected
Powerthighs never leave a bug this neglected
Password accepted
I'm sick of so many situations that I am faced with
I'm even bored of the drugs that I escape with
I clean my face with bleach twice a week
To replace it with fresh untapped energy
Cause I've been there see,
I've had no hope,
I've sat in the stadium watching people walk home
I've seen life crumble, I step up, I cope
I get by by releasing all these rhymes out my throat
My memory's stuck, leave trails of post-it notes
Filled with disconnected thoughts and witticisms that I wrote
When I felt broke, beaten down, totally stressed out
Thinking about my life without a mic and there's no doubt
Wouldn't wake up in the morning, I wouldn't eat
I wouldn't take a shower wouldn't blink, wouldn't breathe
Wouldn't skate, drink beer, date, or even think
Slowly decompose into dust