energy saving led light bulbs

LED anti-surge ability is relatively poor, especially LED light against the reverse voltage capability. The enhanced protection is also important in this respect. Some LED lights installed in outdoors, such as LED street lights. Since the start grid load rejection and lightning induction, it will invade a variety of surge from the grid system, the surge will cause some damage to the LED. Therefore, LED drive power surge suppression should have intrusion protection functions, to prevent LED being damaged characteristics. The factors that affect the LED down light service life The factors that affect LED bulb the service life of LED down lights are mainly LED lamp beads, LED heat sink, which is the lamp housing. There is LED power supply. Lamp beads quality are the main determinants of LED down lights life. The current quality LED chip brand is Cree, nichin and other brands. Good LED down lights brands are focusing on the LED chips, generally choose Cree or Samsung. Its quality and light emission are more stable, service life is longer. Of course, the cost is relatively higher. Taiwan imported chip life is long enough and simultaneously costs is lower. Same as the human heart, the power supply is the heart of LED down light. The power supply also has great impact on the LED down light lifespan. LED down light is 110 / 220V power supply, while the domestic projecteur extérieur led market is 220V power supply. There are basically no standards to regulate power supply, so the power supply quality is not uniform. The other one also has greater impact on the LED down lights life is the radiator, which is the lamp body shell. LED lamp beads heat first transmitted on PCB, PCB conduction to the bottom of the shell, the shell convection or conduction into the air. So, good heat dissipation requires for faster PCB heat dissipation, the heat sink and PCB is close contacted. Air contact area of heat sink should be large enough. PN junction temperature when LED down light lit should be below 65 degrees in order to ensure the LED chip light fades is not too quickly because of high temperature. LED down light that use aluminum radiator integrated cold forming can maximize the reduction of the thermal spot exterieur led resistance; making a good solution to the problem that heat sink cannot effectively export the heat of the lamp dead and PCB. myledgrowupanty 141104