1. Light beads:

LED light beads are definitely the most important devices in the guardrail tube, and they are also the most valuable. LED light beads must use products from regular manufacturers. According to our experience, the chip with 12 microns or above is definitely stronger than the chip with 9 microns. This is mainly because the heat dissipation is better, and it is much better in terms of light decay and reliability, but it is impossible for ordinary users to detect it. . Chengdu Wenjian Electronics Co., Ltd. is engaged in the production of LED light beads. In addition to chips, other auxiliary material companies are also strictly selected, which can ensure the quality of the light beads produced, and the quality of the guardrail tube is well controlled from the source.

2. Power supply:

There are two ways to supply power to the guardrail tube: high voltage of 220V and low voltage below 48V. 220V direct power supply is a dangerous and uneconomical way. The low-quality method is to use capacitors or resistors to reduce the voltage and supply. First of all, there is a big problem with this method; secondly, it consumes too much power and causes great damage to the power grid. The power supply department is firmly opposed to it. We've come across multiple instances where LEDs are really power efficient but are surprisingly power-hungry when made. For example, a bridge in Yibin, Sichuan needs more than 1,000 meters of guardrails. Someone installed it after supplying it at a low price. In less than half an hour, the power supply line in the city almost collapsed, and the power supply bureau was forced to cut off the entire line. Our company's technicians were invited to the scene to help analyze the reasons, and found that each guardrail tube used a 2.2μ capacitor. The measured power consumption exceeded 38 watts, which was 5 watts more than the 7 watts of the previously reported LED power consumption. times more. The most terrible thing is: due to the sudden addition of a large number of capacitive loads on the line, the mismatch of the power supply line has formed a self-excited oscillation. Fortunately, the on-duty personnel handled it properly, otherwise a major accident may occur. Therefore, we strongly appeal to the power supply of the guardrail tube not to use the capacitor step-down method. So what is the best way? After our theoretical deduction and practical test, we believe that using DC power supply below 36V is the best way to recommend it. The best way to obtain DC voltage is to use a switching power supply. Considering the cost and line loss, you can use segmented power supply. Of course, there is also a transformer to convert the high voltage of AC 220V into the low voltage of AC 30V by transforming it. This method has lower efficiency. Non-ferrous metals are also becoming more and more expensive, which is not the direction of development.