How Does an LED Lamp Work?

The technological revolution is not always obvious at the beginning. But just as diesel engines and electric locomotives have replaced steam engines, or DVDs have replaced video tapes, the most energy efficient LED light bulbs are replacing traditional incandescent, fluorescent and halogen lamps.

We have all heard of the benefits of energy efficient LED bulbs, but how do they work? Why is LED technology much cheaper and more environmentally friendly than the old lighting technology?

1. Energy efficient LED bulbs=light emitting diode

First, let's start with the basics. LED stands for light emitting diode. We all know what it means to emit light, but few people know what a diode is. For those who don't know, a diode is a special type of semiconductor terminal that usually allows current to flow in one direction. Therefore, LEDs are just simple diodes designed to emit light when current passes.

2. Why are energy-saving LED bulbs cheaper to use?

Energy efficient LED bulbs are different from traditional lamps because they do not emit heat when they start to emit light. On the other hand, traditional lamps use up to 90% of the energy to generate heat and only 10% generate light. This will not only lead to higher electricity bills, but also higher frequency of replacement of burned bulbs. Energy-saving LED bulbs have a lifespan of 3-25 times longer than traditional lamps.

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