led display datasheet
As a new green technology illumination Hihg power white have some advantages such as : Long life , low power , non-maintenance etc .So it will replace the old fluorescent in future in many illumination areas .The long life of the led tube based on the safe working enviroment , As a led illumination ,the main threats of affecting their life is from 2 method .First ,it through the electricity to hurt the Led tube it means, the current on the Led tube is over the Led tube datasheet maximum rated current and including over pression . The second one is too hot and it also can be hurt the Led tube .All of these hurt should be displayed the meterial are broken immediately or broken in a long time after it happened .These will reduce the life of the Led tube . 1.The power supply of the Led tube is broken will make the Led tube stop working . Usually The brokenof Led power supply another word is Led driver is from the input curent,if the current is over than the maximum allowed current .It is going to stop working of the led chips that in the led tube power supply And capacitors and other passive components breakdown damage occurred. Transient over-current events Transient over-current event is the current flowing through LED LED technology over the data sheet the maximum rated current, which may be due to high current directly from the high voltage may also be indirect, such as transient lightning, switching power supply of the instantaneous state switching noise, power fluctuations caused by over-voltage over-current events. When the LED tube chip junction temperature rise 10 ℃, flux will decay 1%, LED's life will be reduced by 50%. LED tube power supply and drive circuit as easily have suffered electrical shock and short circuit damage, so the design of the drive circuit fault state to fully consider all the protection measures to enhance the reliability of the circuit, thus reducing failure rates. POLYZEN series is used for DC power input port, an integrated over-voltage over-current protection devices, LED light string in the surface mount series is a load or circuit overcurrent fault protection. Furthermore, PPTC can be used as temperature sensors and LED drivers used in conjunction to achieve LED array illumination of thermal protection, in a large array of lighting, because the LED tube light series of large and structure is more complicated, in practical applications prone to overheating fault location, often not fixed in a particular location, so single overheating detection device is difficult to provide complete thermal protection. PPTC Because of its many features and is suitable for LED tube lighting system, over-current and over temperature protection, PTC in the design can be installed in the metal core circuit board or LED cooling plate in order to achieve the best heat conduction, so that more timely PPTC protection and effective.
led display datasheet
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