What is an LED?

An LED is a light-emitting-diode. A semiconductor diode is a two-terminal device, sometimes described as a PN. An LED is fabricated from a semiconductor material. One side of the semiconductor is attached to the P side which is the anode; the other side of the semiconductor is attached to the N side, the cathode. Electricity can flow from the P side to the N side, however, no electricity can flow in reverse. In effect, therefore, a diode is an unidirectional conductor.

 

The colours of LED lights

LEDs are available in a variety of colours. While popular colours include red, yellow and green, one of the most difficult colours to create is white. In fact, it is currently not possible to create pure white for mass production. Most LED flash lights or light bulbs today that are white in colour are actually not pure white, but whitish-blue.

 

Benefits of LED lights

There are many reasons why LED light bulbs continue to be popular. Here are some of the main benefits of LED lights:

1) LEDs are extremely efficient and require very little current to illuminate. Since they do not have a filament, LEDs do not create heat making them perfect for many applications where heat is detrimental. In a traditional light bulb, the vast majority, at times more than 80%, of the electricity used to illuminate a light bulb is wasted not in light, but in heat.

2) LEDs are manufactured within an epoxy resin epoxy, which means that that they are virtually indestructible. Compared to a traditional light bulb, an LED is far more durable.