How to choose good power supplies for LED displays

Power supply is a key component for LED display. A good power supply can support LED displays to work for a long time. On the contrary, if you choose a low-quality power supply, it will not only affect the normal use of the LED display, but also may damage the LED display and result in losses. Therefore, it is essential to get good power supplies for LED displays. The question is how to choose good power supplies? We’ll give you a detailed introduction of choosing reliable power supplies for LED displays below.

 

1. Appearance

A good power supply manufacturer is also very strict in the production process of the power supply. Only in this way can guarantee consistency of the products. The power supply with strict manufacturing process will be beautiful and tidy in appearance, the tin surface is flat and full, and the components are arranged neatly, so that the appearance of the power supply will have fewer problems after long-time use. On the contrary, if the manufacturing process is not strict, the appearance of the power supplies does not look good, and the quality is definitely not as good as good-looking ones.

2. Full load efficiency

The efficiency of the power supply is very important, too. A high-efficiency power supply has a high energy conversion rate. The energy conversion efficiency limit of a power supply depends on the full-load efficiency of the power supply. The higher the full-load efficiency, the faster the conversion and the higher the utilization rate. Fully loading high-efficiency power supplies not only meet the requirements of energy saving and environmental protection, but also help users save energy and save electricity costs.

3. Voltage ripple

Generally speaking, the output voltage of a constant voltage power supply has large ripples, and the size of the ripples has a very large impact on the life of electrical equipment. If you want the power supplies to have long lifetime, you must get power supplies with a small voltage ripple. The smaller the ripple, the better.

4. Temperature rise

Similar to most of electronic products,  power supplies have an issue of temperature rise after long time use, too. Temperature rise affects the stability of the power supply and also affects the lifetime of the power supply. The lower the temperature rise of the power supply, the better. In addition, the temperature rise of a high-efficiency power supply will be less than the ones with low-efficiency. The efficiency of the power supply can also be inferred from the temperature rise.

 

5. Redundancy

When a LED display is playing video or pictures, the current often changes instantaneously, which requires the power supply to have to be with good quality. Generally speaking, in order to ensure that the LED display can be played normally, it is necessary to the power supplies have a little redundancy. Generally speaking, the more there is the redundancy, the more stable the performance of the power supply, and the longer the lifespan. However, too much redundancy will easily cause waste and increase the cost of the power supply. At present, most of power supplies have a redundancy of 20%-30%, which is the most cost-effective ratio.

6. Application environment

The choice of power supply is not static. The specific choice depends on the specific application environment. The power supply with various functions is selected according to the application environment, such as protection functions: over-voltage 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), uninterruptible power supply (UPS).