Question

Generally speaking, what is the starting current of a large LED screen?

Answer 1

The starting current of the LED large screen is not a fixed value. It is affected by many factors, including the specifications, size, resolution, brightness, driving voltage and current of the LED display, as well as the power supply and circuit design used. Therefore, it is impossible to give a unified starting current value.

However, we can discuss the starting current of the LED large screen from some general perspectives and reference information.

First, the driving voltage of the LED display is usually around 5V, while the driving current varies according to the specifications and number of LEDs. For low-power LEDs, the rated current of each LED may be between a few mA and tens of mA; while for high-power LEDs, the rated current of each LED may reach hundreds of mA or even higher.

Secondly, when the LED large screen is started, a relatively large instantaneous starting current will be generated because a large number of LED lamp beads need to be lit at the same time. This starting current may be many times larger than the rated working current of the LED lamp beads, depending on the circuit design and protection measures.

In practical applications, in order to ensure the stable operation and extend the service life of the LED large screen, some measures are usually taken to limit the size of the starting current. For example, a current limiting resistor or current limiting circuit is set in the power supply circuit to prevent excessive startup current from damaging the LED lamp beads and circuits.

In addition, it should be noted that different brands and models of LED large screens may have differences in starting current. Therefore, when selecting and using LED large screens, it is recommended to refer to the specific product specifications and technical parameter tables to understand the starting current and other related performance indicators of the product.

In summary, the starting current of the LED large screen is a relatively complex issue, which is affected by many factors. In practical applications, it is necessary to select a suitable power supply and circuit design according to the specific situation, and take corresponding measures to limit the size of the starting current to ensure the stable operation of the LED large screen and extend its service life.

Answer 2

The starting current of the LED large screen is a relatively large value, and the specific size depends on the specifications, size, design, and LED type and drive circuit of the display. Generally speaking, when the LED large screen is started, a large instantaneous current will be generated because the filter capacitor in the drive circuit needs to be charged briefly. This starting current may far exceed the current during normal operation.

However, due to the diversity and complexity of LED large screens, it is difficult to give a specific starting current value. Usually, this value needs to be obtained through actual measurement or by referring to the technical specifications of related products. Under normal circumstances, the starting current of the LED large screen may reach several times or even higher than the normal working current.

Therefore, when designing, installing and using LED large screens, it is necessary to fully consider the impact of its starting current on the power supply and circuit to ensure the stable operation and safety of the system.