Revealing the secrets of LED display power supply calculation: easily deal with power demand!

In the design and installation process of LED display, correctly calculating the required amount of power is a crucial step. This is not only related to whether the display can work properly, but also involves the stability and safety of the system. Below we will introduce in detail how to calculate the demand for LED display power supply to help you easily cope with the power supply planning of various projects.

一. Basic calculation of LED display power supply

First, we need to understand the basic parameters of LED display power supply. Suppose we have a 5V40A power supply with a rated power of 200W. In actual use, the effective power of the power supply is usually between 80% and 90%, and here we calculate it at 80%. This means that the actual effective power of each power supply is about 160W.

Next, we need to know the maximum power of each LED display module. Assume that the maximum power of each module is 25W. So, how many modules can a 5V40A power supply power?

The calculation formula is as follows:
200×80% = 160W
160W ÷ 25W ≈ 6.4

This means that a 5V40A power supply can power about 6 modules (rounded).

二. Actual case calculation

Suppose we want to make a project with a length of 7.36 meters and a height of 4.16 meters, using a full-color P2.0 LED display module. The size of the module is 320mm x 160mm, and the dot pitch is 2.0mm.

1. Calculate the number of modules required
Module length requirement: 7360mm ÷ 320mm = 23 modules
Module height requirement: 4160mm ÷ 160mm = 26 modules

Total number of modules required: 23 × 26 = 598 modules

2. Calculate the number of power supplies required
Assuming that the maximum power of each module is 25W, we already know that a 5V40A power supply can power about 6 modules (effective power is 160W). Therefore, we need to calculate the number of power supplies required: 598 ÷ 6 ≈ 99.67

Taking into account the possible errors in actual situations and to ensure the stability of the system, we round up, so 100 power supplies are required.

三. Other factors to consider

In addition to the basic calculations, there are some additional factors to consider:

1. Redundant configuration: In order to improve the stability and reliability of the system, a certain proportion of redundant power supplies are usually added. For example, if the calculated number of power supplies is 100, you can consider adding 10% redundancy, that is, 110 power supplies are needed.

2. Line loss: In actual installation, the length and material of the power cord will cause a certain loss of voltage. Therefore, when calculating the number of power supplies, this factor needs to be considered to ensure that the module obtains sufficient voltage.

3. Power distribution: The distribution of power supplies also needs to be reasonably planned to ensure that the distance from the power supply to the module is roughly equal to reduce the impact of voltage drop.

4. System stability: In order to ensure the stability of the system, it is recommended to use power supplies of the same brand and model to avoid instability caused by power supply differences.

Through the above calculations, we can conclude that for a project with a length of 7.36 meters and a height of 4.16 meters, using a full-color P2.0 LED display module, approximately 598 modules and 100 5V40A power supplies are required. This method can help you accurately calculate the power demand of the LED display project, ensure that the LED display system can operate stably, and avoid waste of resources.

In actual applications, other factors need to be considered, such as redundant configuration of power supplies, line loss, etc., to ensure the safety and reliability of the system. I hope this article can help you better understand and master the method of calculating the power supply for LED display screens.

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