LED aging test in product quality control is a very important part. After aging LED products can enhance its effectiveness, and help stabilize the effectiveness of post-use. led street light wholesale is based on the product's countermeasures failure rate curve that is characteristic of the bathtub curve taken in order to improve the reliability of the product.
Aging into white light LED display aging (4 hours), and video aging (48 hours).
LED aging methods include constant voltage constant current aging and aging.
Constant current source is electric current at all times constant. Has a frequency of problems, it is not a constant. It is AC or pulsating current. AC or pulsating current source can be designed to RMS constant, but this power can not be called a "constant current source." Aging is the most constant LED current job characteristics, LED aging is the most scientific way. An aging means the impact of aging but also manufacturers overcurrent latest adopted by the use of adjustable frequency, adjustable constant current source for such aging in a short time to judge the quality of the life expectancy of the LED, and can pick out many conventional aging can not pick out the hidden LED.
So pay attention to the led street lighting fixture aging test
1, the test content: black and white, red, green, blue monochrome, grayscale gradient, video effects, text effects
2, led display a white screen test playing time is not less than 24 hours
3, monochrome, grayscale gradient test of not less than 24 hours
4, video, text effects test of not less than 24 hours
5, led screen burn-in test must manned, identify problems and timely reported to the Engineering Manager for processing.
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