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The so-called LED lamps, as the name implies, refers to the Luminaire products using LED (light-emitting diode, light-emitting diode) technology as the main source of light. LED is a solid-state semiconductor assembly, which uses the current to flow to the semiconductor p-n junction coupling, and then by the semiconductor separated by the negative electrons and the positively charged electric hole two kinds of carrier combined, resulting in photon emission, different kinds of LEDs can emit from infrared to blue, Light of different wavelengths, such as between purple light and UV rays. In recent years, the new development is to put fluorescent powder on the Blu-ray led, the Blu-ray led into White LED products.

This operation typically requires a combination of a drive circuit (LED Driver) or a power supply, the main function of the drive circuit or power supply is to convert the AC voltage to a DC power supply and simultaneously complete the voltage and current consistent with the LED to drive the matching components. LED Lamps Light bulbs small size, light weight, and epoxy resin package, can withstand high-strength mechanical impact and vibration, not easy to break, and brightness attenuation cycle is long, so its service life can be up to 50,000-100,000 hours, far more than the traditional tungsten light bubble 1,000 hours and fluorescent lamp 10,000 Hours. Because the service life of LED lamps can reach 5 ~10 years, so not only can greatly reduce the cost of luminaire replacement, but also because of its very small current can drive the characteristics of luminescence, in the same lighting effect, power consumption is only one-second of fluorescent lamps, so LEDs also have the advantages of power saving and energy savings. However, because some of the LED technology is not enough, so the initial use of the lamp on the shortcomings include light quality (color performance, consistency, color temperature) poor, heat dissipation is not easy, and the price is high, and the improper heat dissipation, will lead to the brightness of LED lamps and circuit 0 components of the service life accelerated attenuation. Manufacturing technology is surging, these shortcomings, including LED thermal resistance gradually reduced, light quality is also in the promotion. In 2008, in addition to the LED Baileng luminous efficiency has reached lm/w, and led warm white light luminous efficiency, is expected in 2010, can also be increased from the lm/w to lm/w. Compared with other general light sources, tungsten light bubble about lm/w, fluorescent fluorescent lamp about 45~60 lm/w, HID lamp about 120~150 lm/w,led luminous efficiency has obviously gradually become advantageous

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