What is the difference between LED lamps and energy-saving lamps?

What is the difference between LED lamps and energy-saving lamps?

As we all know, the incandescent lamp is an important invention of Edison. This important invention has made mankind bid farewell to the darkness and usher in the light. But the incandescent lamp consumes too much electricity, and only less than one-tenth of its energy is turned into light energy, and the rest is heat energy wasted in vain. So people are looking for ways to replace incandescent lamps with new light sources. Energy-saving lamps came into being. Because it is relatively cheap and easy to make, it has been widely used and has a tendency to gradually replace incandescent lamps. 

The difference between LED lamps and ordinary energy-saving lamps is that the light-emitting principle is different. The two poles of energy-saving lamps are ordinary tungsten filaments. When the tungsten wire is electrified and heated, it can emit electrons. A relatively high voltage is applied on both sides of the lamp tube to form an electric field, and these electrons will be accelerated in the lamp tube to form an electron flow with a certain speed and energy. Lamps are evacuated and filled with mercury, what we call mercury. 
When the lamp is energized and heated, the mercury evaporates from a liquid state to a gaseous state. Forms mercury atoms in the free state. The electrons in the electron flow hit the mercury atoms at a certain speed, so that the mercury atoms are excited and become excited ions. It is called a step, the excited state of mercury falls back to its original state spontaneously after a short period of time, and at the same time emits ultraviolet light, which cannot be used for illumination. So we coated some fluorescent substances on the inner wall of the lamp tube. Under the bombardment of ultraviolet light, after the fluorescent substances are excited, they can emit relatively natural light, which can be used for our lighting.

LED is a light-emitting diode, a solid-state semiconductor device that can directly convert electricity into light. The heart of the LED is a semiconductor chip. One end of the chip is attached to a bracket, one end is the negative electrode, and the other end is connected to the positive electrode of the power supply. The entire chip is encapsulated by epoxy resin. The semiconductor wafer consists of two parts, one part is a P-type semiconductor, in which holes dominate, and the other end is an N-type semiconductor, where electrons are mainly. But when the two semiconductors are connected, a "P-N junction" is formed between them. When the current acts on the wafer through the wire, the electrons will be pushed to the P region, where the electrons and holes recombine, and then emit energy in the form of photons, which is the principle of LED light emission.
In addition, LED lamps save 75% of electricity than ordinary energy-saving lamps and have a lifespan of more than 20,000 hours. What conforms to the current concept of low-carbon life is green and environmental protection. It has no ultraviolet and infrared rays, no radiation, especially no mercury, so it is a real green product; its long service life is 50 times that of ordinary light bulbs, which is equivalent to 10 years of uninterrupted lighting. It is no flicker, silent.

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