Meaning of light emitting diode
Answers
Also see laser diode.
A light-emitting diode (LED) is asemiconductor device that emits visible light when an electric current passes through it. The light is not particularly bright, but in most LEDs it is monochromatic, occurring at a singlewavelength. The output from an LED can range from red (at a wavelength of approximately 700 nanometers) to blue-violet (about 400 nanometers). Some LEDs emit infrared (IR) energy (830 nanometers or longer); such a device is known as an infrared-emitting diode (IRED).
meaning: a semiconductor diode which glows when a voltage is applied.
In the simplest terms, a light-emitting diode (LED) is a semiconductor device that emits light when an electric current is passed through it.
LED light bulbs are designed to convert electrical energy into light through a microchip which then illuminates the tiny light sources which produce visible light. This process uses up to 90% less power than traditional incandescent and fluorescent bulbs. LED lights are directional light sources.
The “Light Emitting Diode” or LED as it is more commonly called, is basically just a specialized 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.