How to choose a suitable power supply for LED display?

How to choose a suitable power supply for LED display?

 

 

 

The power supply is the source of the LED display, the inferior power supply will not only affect the normal use of the LED display, but also is likely to damage the LED display, resulting in immeasurable losses, so it is very important to choose a good quality power supply.

 

How to choose a good quality power supply? We can start from the following aspects:

 

1. Appearance process

A good power supply manufacturer is also very strict about the workmanship, because in this way can the batch consistency of the product be guaranteed. An irresponsible manufacturer will definitely not be good for the appearance of the power supply, the tin surface, and the neatness of the arrangement of the components.

 

2. Full load efficiency

The efficiency of the power supply is the most important indicator, and the power supply with high efficiency has a high energy conversion rate, which not only meets the requirements of energy conservation and environmental protection, but also can really save electricity and money for users.

 

3. Output voltage ripple

 

The size of the ripple has a very large impact on the life of the electrical equipment, and the smaller the ripple, the better.

 

4. Observe the temperature when the power supply is working

Temperature affects the stability and life of the power supply, and the lower the temperature, the better. In addition, it can also be seen from the efficiency aspect, the general efficiency will be small at high temperatures.

 

5. Play the video

Due to the nature of LED display products, instantaneous changes in current are usually generated when playing videos or pictures, which puts forward more stringent requirements for LED power supplies. Generally, in order to ensure the normal broadcast of the display screen, it is necessary to reserve a certain margin for the power supply product. The more margin is reserved, the more stable the performance of the power supply product and the longer the life, but this increases the cost of the power supply product, and too much margin reservation is also easy to cause waste. At present, the industry's LED display power supply is generally reserved for 20%-30% margin.

 

6. Output power

In order to increase the life of the power supply, it is recommended to choose a model with 30% more output power rating. For example, if the system requires a 100W power supply, it is recommended to choose a model with a power rating greater than 130W, and so on to effectively extend the life of the power supply.

 

7. Power supply

Select the power supply of various functions according to the application field, such as protection function: over-voltage protection, over-temperature protection, over-load protection, etc.; Application functions: signal function, remote control function, telemetry function, parallel function, etc.; Special Functions: Power Factor Correction (PFC), Uninterruptible Power Supply (UPS).