How to calculate led light box power?

led light box is the use of led as a light source, with energy saving and environmental protection, pure light color, long life and other advantages of the new light box. led light boxes are widely used in wedding photography, home decoration, mobile advertising and other fields. With its widespread use, the knowledge about led light boxes is also spreading. This article will introduce you to the power calculation of led light boxes.

Power estimation of led light box

If you only need to estimate the power of the led light box to meet the demand, you can estimate it according to the following methods:

1. This method estimates power by estimating current. Assuming that each string of led lamp beads is calculated according to the 20mA standard, then the power consumption of each string of led lamp beads is about 220V*0.02A=4.4W

2, this method is based on the number of each string of light beads to estimate the power of the led light box. First of all, we must count the number of each string of led lamp beads (if the number of work can be calculated with the average number), and then calculate the power of different color lamp beads, and finally add. For example, assume that the power consumption of white and blue lamp beads is basically equal, that is, the power consumption of each lamp bead is about 3V*0.02A=0.06W; The power consumption of red, green and yellow lamp beads is basically equal, and the power consumption of each lamp bead is about 1.7V*0.02A=0.035W, and then multiplied by the total number of lamp beads.

3, if it is a running horse lamp, it is converted according to the working condition ratio of the light. It is assumed that it is on for 1 second every 3 seconds, that is, the power consumption *1/3 when the full light is on. If the full light power consumption is 4.4W, the actual power consumption is 4.4W*1/3=1.5W.

led light box power actuarial

If the estimation does not meet your requirements, you can choose accurate measurement. Precise measurement is more certain than estimation, but the process requires the use of relevant tools. Accurate measurement can be carried out in the following ways:

1. Use A multimeter to measure the actual output voltage V of the controller and the actual working current A of each string of lamp beads, then the actual power consumption P=V*A of each string of lamp beads. If it is running horse lamp, it is still converted according to the proportion of the above working conditions.

2. Use power monitors, smart sockets and other power meters to connect them to the front end of the led light box controller to test the actual AC power consumption of the light box. In the use of power timing, we need to pay attention to the point that if it is connected to the back end of the led light box controller (that is, DC) calculated power consumption also consider the efficiency of the light box controller, generally calculated by 80%, then the total power consumption of the led light box = measured power consumption /0.8.