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Firstly, choose the LED display power supply based on the appearance technology. A good power supply manufacturer is also very strict with the manufacturing process, as this is the only way to ensure batch consistency of products. An irresponsible manufacturer will never produce a power supply with a good appearance, tin surface, and neat arrangement of components.
Secondly, choose the LED display power supply based on full load efficiency. The efficiency of the power supply is an important indicator. High efficiency power supplies have a high energy conversion rate, which not only meets the requirements of energy conservation and environmental protection, but also effectively saves electricity and money for users.
Thirdly, the output voltage ripple size of a constant voltage power supply. The size of the ripple has a significant impact on the lifespan of electrical equipment, and the smaller the ripple, the better.
Fourthly, observe the temperature rise during the operation of the power supply to select the LED display power supply. The temperature rise affects the stability and lifespan of the power supply, and the lower the temperature rise, the better. In addition, from the perspective of efficiency, it can also be seen that the high temperature rise in efficiency is generally small.
Fifth, due to the properties of LED display screen products, there is usually an instantaneous change in current when playing videos or images, which puts forward strict requirements for LED power supply. Usually, in order to ensure the normal broadcast of the display screen image, it is necessary to reserve a certain margin for the power supply product. In general, the more margin reserved, the more stable the performance and longer the service life of the power supply product. However, this increases the cost of power products, and leaving too much margin can also lead to waste. Currently, the LED display power supply in the industry generally reserves a margin of 20% -30%.
Sixth, in order to increase the lifespan of the power supply, it is recommended to choose a model with an additional 30% output power rating. For example, if the system requires a 100W power supply, it is recommended to select a model with an output power rating greater than 130W, and so on, which can effectively improve the lifespan of the power supply.
Seventh, select the power supply for various functions according to the application site, such as protection functions: overvoltage protection, over temperature protection, overload protection, etc; Application functions: signal function, remote control function, telemetry function, parallel function, etc; Special functions: Power Factor Correction (PFC), No Power Cut (UPS).
Secondly, when selecting an LED display power supply, while maintaining stability, dynamic response, interference elimination, and other measures should also be taken.