LED classification

LED energy-saving lamp variety, currently on the market, basically consists of three kinds : one kind: by straw type small power LED made from LED energy-saving lamps, power supply adopts a resistance-capacity pressure reducing circuit. Straw type LED using the indicator LED form of encapsulation, epoxy resin package, the LED chip to the heat dissipation, light and serious, a lot of white LED, after a period of use, color temperature becomes high, gradually become bluish, become dim.
There are also manufacturers committed to the development of low light straw hat type LED, but with no change in encapsulated form, light still did not change much. This type of LED energy-saving lamps products, as a transitional product, the price is low, quality is poorer.

046843.jpgLED energy-saving lamp variety, currently on the market, basically consists of three kinds : one kind: by straw type small power LED made from LED energy-saving lamps, power supply adopts a resistance-capacity pressure reducing circuit. Straw type LED using the indicator LED form of encapsulation, epoxy resin package, the LED chip to the heat dissipation, light and serious, a lot of white LED, after a period of use,LED Lighting module color temperature becomes high, gradually become bluish, become dim.
There are also manufacturers committed to the development of low light straw hat type LED, but with no change in encapsulated form, light still did not change much. This type of LED energy-saving lamps products, as a transitional product, the price is low, quality is poorer.
The 5050 patch LED energy saving lamp
Two: by 3528 or5050patch in the power LED made from LED energy-saving lamps, power supply is also generally use a resistance-capacity pressure reducing circuit, some manufacturers use a constant current circuit, compared with straw type LED, patch LED cooling slightly better, a heat conducting substrate, in conjunction with aluminum substrate, can be part of the heat is derived. But because ignore the LED heat, a lot of power chip LED lamps, no radiator, still use plastic shell, light is still serious. By means of resistance and capacitance step-down low-end power, due to voltage instability, current fluctuations, brightness is also fluctuating, affordable, good quality of a high power LED energy saving lamp.
Three: large power chip made by LED LED energy-saving lamps, power generally adopts constant current circuit, which has a constant current, such as 5W LED, usually adopts 51 watt LED chip,300mA series, with constant current source power supply, wide voltage power supply, so that the grid fluctuation current, no change in luminance, luminous flux is constant,5patch LED welding on aluminum substrate, aluminum plate combined on the radiator, the use of heat can be quickly dispersed, to ensure LED chip temperature below LED allows the junction temperature, thus ensuring the authenticity and validity of LED energy-saving lamp life. This type of LED lamp high prices, good quality, but also the development direction of LED energy saving lamp.
A good LED energy-saving lamps, should consist of four parts: the high quality LED chip, a constant current power supply, lighting power relatively suitable radiator, light diffusion effect and not see point light source lamp shade.
The LED chip is very important: good LED chip, high light efficiency, low temperature rise, high color rendering index, junction temperature is high, antistatic.
Heat radiation is very important: if the emphasis on LED cold light source, does not need to heat, it is completely false, in have never developed a true low fever before LED chip, LED with quality radiator, so its life may also far less than the existing ordinary energy-saving lamp! Because the light to the initial flux of70% when, already marked the end of the LED energy saving lamp life.
Power supply is very important : is a high temperature and high humidity, whether had high voltage safety ( UL ), whether had electromagnetic compatibility (EMC / EMI ), they are more rigid index, also decided the LED energy-saving lamps in the real life, cask effect, power may be LED energy-saving lamp is short board.
The lampshade is key: LED energy-saving lamp shade is a two light distribution, active, have without shade, a transparent lamp shade, a matte shade, have white shade, shade of light diffusion. Without the lampshade and the transparent lampshade, no two light distribution, see LED, LED is open source, glare, and irradiates an object of false hair. Frosted lamp light can see LED light source, is also part of a virtual object.
Opal lamp light invisible but low transmittance of LED light source. High quality LED energy-saving lamps, widely used in light diffusing material, LED light reaches the lampshade, the light spreads, lit the invisible light source of LED, LED energy saving lamp as a light source,Bluetooth keyboard device the irradiated object without deficiency, and light diffusion type lampshade universal transmission rate is in 80% above, the effect of good.

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