The latest classification of the led highbay light

Categories: made ​​by the straw hat type of small power LED LED highbay light, power supply with RC Buck circuit. Extension Strawhat LED indicator LED package, epoxy encapsulated LED chip can not dissipate the heat, the light fades severe, a lot of white LED, in use for some time, the color temperature is high, gradually into a bluish turned dark. Manufacturers committed to developing low-light failure straw hat LED, but because there is no change of the package still did not change much, the light fades. LED energy-saving lamps such products, for a transitional product, low prices, poor quality.
5050 SMD LED energy-saving lamps categories: made ​​in power by 3528 or 5050 SMD LED LED energy-saving lamps, power is also commonly used by RC Buck circuit, some manufacturers using constant current circuit, compared to the straw hat LED stickers piece LED heat a little better, the thermal conductivity of the substrate, with the aluminum plate, can export part of the heat. However, due to the heat of the LED or ignored, many in power SMD LED energy-saving lamps, radiators, still use the plastic shell is still serious, the light fades. Using resistive and capacitive buck low-end power, grid voltage instability, the current fluctuations in brightness fluctuations, affordable, quality slightly better high-power LED energy-saving lamps.c
Three categories: made ​​by the high-power SMD LED LED highbay light, power generally constant current isolated circuit, that is, a constant current of 5W LED, usually five 1-watt LED chips in series, using constant flow 300mA current source power supply, wide voltage power grid fluctuations, the current does not change, the luminous flux that maintain a constant brightness 5 SMD LED welded on top of the aluminum plate, aluminum plate and then bound to the radiator, the use of heat timely quickly dispersed, ensure the LED chip temperature below the LED allowable junction temperature of the LED energy-saving lamps in order to ensure real and effective life. Type of LED lights is the high price, good quality, but also the direction of the development of the LED energy-saving lamps.
A good LED energy-saving lamps, should be composed of four parts: quality LED chip, constant current isolated power, relative lamp power radiator, light diffusion effect is soft but not to the point light shade.

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