As an important component of the power supply system, choosing a qualified and reliable power supply can significantly improve the energy-saving effect and service life of LED displays. So, how to correctly identify and choose a qualified LED display power supply?
1、 Choose an LED display power supply based on its appearance and craftsmanship. A good power supply manufacturer is also very strict with its production process, as this ensures batch consistency of the product. An irresponsible manufacturer produces power supplies with poor appearance, tin plating, and component arrangement.
2、 Choosing LED display power supply based on full load efficiency is the most important indicator. Power supplies with high efficiency have a high energy conversion rate, which not only meets the requirements of energy conservation and environmental protection, but also can effectively save electricity and money for users.
3、 The output voltage ripple of a constant voltage power supply has a significant impact on the lifespan of electrical equipment, and the smaller the ripple, the better.
4、 Observe the temperature rise during power supply operation. Temperature rise affects the stability and lifespan of the power supply, and the lower the temperature rise, the better the temperature rise. In addition, from the perspective of efficiency, it can be seen that generally, the high temperature rise of efficiency will be small.
5、 Attention should be paid to the reserved margin of power products. Due to the nature of LED display products, instantaneous changes in current are usually generated when playing videos or images, which puts strict requirements on LED power supplies. Usually, in order to ensure the normal playback of the display screen, it is necessary to reserve a certain amount of margin for power products. Generally speaking, the more margin is reserved, the more stable the performance and longer the lifespan of power products. However, this increases the cost of power products, and too much margin is also prone to waste. Currently, LED display power supplies in the industry generally reserve a 20% -30% margin.
6、 To extend 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 choose a model with a rated output power greater than 130W, and so on, which can effectively improve the lifespan of the power supply.
7、 Select the power supply for various functions according to the application field, such as protection functions: overvoltage protection, overtemperature protection, overload protection, etc; Application functions: signal function, remote control function, telemetry function, parallel function, etc; Special functions: Power factor correction (PFC), uninterruptible power supply (UPS).
