As one of the main equipment of LED display screen, LED power supply is playing an important role for LED display screen. Research data shows that more than 80% of faulty displays are caused by power supply. LED display screens are divided into two environments for use: indoor and outdoor. Today, let's take a look at the relevant technical parameters of LED display screen dedicated power supply
LED display screen dedicated power supply power supply type
Generally speaking, when choosing a dedicated power supply for LED display screen, you should choose a product with low output voltage and high current (such as: 5V/60A application). So why do you choose this? This is because the working voltage of LED lamp beads is low. Generally, the working voltage of LED lamp beads is 2.8~3.3V for white; 1.8~2.2V for red; 3.0~3.2V for blue; 2.9~3.1V for green; and 1.8~2.0V for yellow. Therefore, when designing and selecting standard power supplies, display manufacturers will choose 5V as the main power supply.
Application scenarios of dedicated power supplies
With the rise of the rental LED display market, rental display screens have the advantages of small pitch, light weight, thin structure, hoisting and quick disassembly/handling/installation. At present, they have been widely used in hotels, booths, KTV\video conferencing and other fields. The specifications of small pitch LED display screens P1.9 and P1.6 have officially become the mainstream of the market, and P2.5 has gradually become conventional. As the technology of small pitch display screens matures, its application range will be more extensive.
How to choose a high-quality dedicated power supply
First, we only choose power supplies with good appearance, which means that the array uniformity of the components is excellent. Secondly, check the efficiency of the power supply. Judging the energy saving level of the power supply is based on efficiency. When fully loaded as a good power supply, it must be higher than 80%. The higher the efficiency, the less active power input. Third, the PFC value is also important as efficiency. The PF value of a power supply without PFC function may be lower than 0.6. A low PF value will increase reactive power and cause huge power losses. Fourth, we need to ensure that the power supply has excellent stability, which will affect the stability and working life of the LED display. It can be expressed by ripple and temperature rise, and a power supply with good stability must have low ripple and low temperature rise.
