choiceFull color LED displaySeven key elements of power supply:
　　
1. The output voltage ripple of constant voltage power supply is large. The size of ripple has a great impact on the service life of electrical equipment. The smaller the ripple, the better.
　　
2. Observe the temperature rise when the power supply is working to select the LED display power supply. The temperature rise affects the stability and service life of the power supply. The lower the temperature rise, the better the temperature rise. In addition, from the aspect of efficiency, it can be seen that generally, the high temperature rise of efficiency will be small.
　　
3. Choose the power supply of full-color LED display according to the appearance process. A good power supply manufacturer is also very strict with the working process, because this can ensure the batch consistency of products. An irresponsible manufacturer will never produce power supply with good appearance, tin surface and element arrangement regularity.
　　
4. Select the power supply of full-color LED display from the full load efficiency. The efficiency of the power supply is the most important indicator. The high efficiency power supply has a high energy conversion rate, which not only meets the requirements of energy conservation and environmental protection, but also saves electricity and money for users.
　　
5. Select the power supply of various functions according to the application field, such as protection functions: overvoltage protection, over temperature protection, over load protection, etc; Application functions: signal function, remote control function, telemetry function, parallel function, etc; Special functions: PFC, UPS.
　　
6. In order to increase the service life of the power supply, it is recommended to choose a model with more than 30% of the rated output power. For example, if the system needs a 100W power supply, it is recommended to choose a model with an output power rating greater than 130W, and so on, which can effectively improve the service life of the power supply.
　　
7. Due to the properties of full-color LED display products, the current will usually change instantly when playing video or pictures, which puts forward stricter requirements for LED power supply. Usually, in order to ensure the normal broadcast of the display screen, a certain margin needs to be reserved for the power products. Generally speaking, the more allowance is reserved, the more stable the performance of power products and the longer the service life. However, this will increase the cost of power products, and too much allowance is easy to cause waste.