1, soft, like a wire like curl.
2, able to cut and extension.
3, the lamp and the circuit is completely covered in the flexible plastic, insulation, waterproof performance, the use of safety.
4, strong weather resistance.
5, not easy to break, long service life.
6, easy to make graphics, text and other shapes; has been widely used in buildings, bridges, roads, gardens, gardens, floors, ceilings, furniture, cars, ponds, underwater, advertising, signs, signs and other decoration and lighting.
Led lights with the current most commonly used specifications are 12V and 24V two kinds of voltage, 12V is 3 string multi-channel parallel structure,
24V is a 6-string multi-channel parallel structure, because the led light belt is to be connected to use, each lamp with a specific how long to connect, and the design of the line width and thickness of the copper foil has a great relationship. Because the current intensity of the unit area can be related to the cross-sectional area of the line, if the wiring does not take into account this point, then the connection length exceeds the line can withstand the current, the lamp will be because of overcurrent Heat, damage the circuit board at the same time, but also reduce the led life.
As the LED light band is a series-parallel structure, therefore, when a group of circuits in a short circuit occurs, it will lead to the same group of other LED voltage increases, LED brightness will increase, the corresponding heat will rise The The most obvious is that in the 5050 light belt inside, 5050 lights in any one of the chip circuit has a short circuit, it will cause a short circuit that lamp lamp current doubled, that is 20mA to 40mA, the brightness of the lamp beads Will become very bright, but at the same time heat will surge, serious in a few minutes to burn the circuit board. But this problem is relatively obscure, generally do not have to pay attention, because the short circuit does not affect the normal light glow, if the staff responsible for testing is only concerned about whether the LED light, rather than check the brightness of the exception, or do not do Appearance inspection, only the test, then, often ignore the problem, which is why a lot of LED lights with manufacturers always complained that the product complained that the product fever but can not find the reason lies.
1, line design: loop as far as possible so that the wiring is wide enough, the spacing between the lines is 0.5mm enough, the rest of the space is best all full. The thickness of the copper foil as far as possible in violation of the total thickness of the circuit board requirements of the case of thickening, the general thickness of 1 ~ 1.5 OZ
2, the production process:
A /, when printing solder paste as far as possible not to let the solder between the tin phenomenon, to avoid the printing caused by poor welding short circuit occurs;
B, when the patch to avoid short circuit
C, check the patch position before reflow
D, back to do after the appearance of inspection, to ensure that there is no short-circuit phenomenon after the light test to do the review, review the attention of LED light is not bright or abnormal dark phenomenon.
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