A diode, as in LED (Light emitting Diode), is a combination of different materials that does this and as a result light is emitted. As electricity passes through these materials the electrons in the compound become excited and emit photons of light.
How is LED used?
Visible LEDs are used in many electronic devices as indicator lamps, in automobiles as rear-window and brake lights, and on billboards and signs as alphanumeric displays or even full-colour posters.
What is LED and its types?
The “Light Emitting Diode” or LED as it is more commonly called, is basically just a specialised type of diode as they have very similar electrical characteristics to a PN junction diode. This means that an LED will pass current in its forward direction but block the flow of current in the reverse direction.
What is an LED made of?
LEDs operate by electroluminescence, a phenomenon in which the emission of photons is caused by electronic excitation of a material. The material used most often in LEDs is gallium arsenide, though there are many variations on this basic compound, such as aluminum gallium arsenide or aluminum gallium indium phosphide.
How long do LED lights actually last?
Many LEDs have a rated life of up to 50,000 hours. This is approximately 50 times longer than a typical incandescent, 20-25 times longer than a typical halogen, and 8-10 times longer than a typical CFL. Used 12 hours a day, a 50,000 bulb will last more than 11 years. Used 8 hours a day, it will last 17 years!
Do LED lights ever burn out?
Unlike incandescent light bulbs, LEDs don't produce light using heat. This is part of what makes them so energy efficient. The downside is that their components can be sensitive to overheating, which can cause them to burn out prematurely.
How long do LED lights strips last?
LEDs have an unbelievably long expected life-span, compared to both incandescent and fluorescent lights. With an average life-expectancy of some 50,000 hours, LED strip lights will still be burning bright in 17 years' time, long after their traditional counterparts will have expired.
Can LED lights be left on 24 7?
Because LED lights have good brightness, providing absolute safety for consumers when using them for service in life and extremely long life with 24/7 operating frequency, with LED lights you can turn on and Use them all day, no need to worry about explosion or damage when forgetting to turn off.
What is LED short answer?
In the simplest terms, a light-emitting diode (LED) is a semiconductor device that emits light when an electric current is passed through it. Light is produced when the particles that carry the current (known as electrons and holes) combine together within the semiconductor material.Sept 1, 2004