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How about playing with car led lights?
There are also LEDs called light emitting diodes, which conduct electricity unilaterally. They were originally used in household appliances, and they have only been used in the automotive field in recent years. Led is generally used as an automobile taillight because of its low power consumption, long service life and concentrated light (which looks brighter). However, due to concentrated light, it cannot be irradiated in a large area, so it is generally not used as a headlight, which has great development prospects. The LED industry in China has also developed rapidly in recent years.
1, brightness of LED lamp bead. The brightness of the light strip made of bad light beads is relatively low, because the quality of LED light-emitting chips determines that the brightness of LED light beads is not high. Those chips are all inferior goods at 1-2 cents each. After a period of use, the problem comes, that is, leakage (dead light). Genuine chips are characterized by high brightness and stable performance, but the price will be high.
2.FPC board quality. The FPC board can be divided into two panels and one panel. Needless to say, double panels are definitely better than single panels, mainly because of their thermal conductivity, more stable quality and higher corresponding price.
3. Color temperature difference. As for the color temperature difference, some deviations of LED chips debugged by lamp bead manufacturers are normal, but LED strip produced by regular LED strip manufacturers can hardly be seen by naked eyes in the same batch. The color temperature of inferior manufacturers in the same batch is obviously different.
4. How to distinguish inferior LED lights: material
High-voltage light belts are basically made of PVC, and regular manufacturers will use domestic environmental protection materials, which are basically tasteless. Informal manufacturers use recycled PVC materials, which will have a great plastic smell when producing. Low-voltage lamp bushing, regular manufacturers will use silicone bushing, PVC bushing used by informal manufacturers, from here alone, the price difference is very big.
5. How to distinguish inferior LED lights: packaging
Regular LED strip will be packed with antistatic reels, usually 5 meters or 10 meters, and then the outside will be sealed with antistatic and moisture-proof packaging bags. However, the fake version of LED strip will use recycling reels to save costs, and then there is no anti-static and moisture-proof packaging bag. If you look at the scroll carefully, you can see the marks and scratches left when the label is removed.
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