Power supply and brief introduction of led light box

Lead: led light box is a new type of light box, which has the advantages of energy saving, environmental protection, pure light color and long service life. Led light boxes are widely used in wedding photography, home decoration, mobile phone advertising and other fields. With its wide application, the knowledge about led light boxes is becoming more and more popular. This paper will introduce the power calculation of led light box.

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 as follows:

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

2. This method estimates the power of led light box according to the number of each string of light beads. First, count the number of each string of led beads (if the workload is heavy, it can be calculated by the average), then calculate the power of beads of different colors, and finally add them up. For example, suppose that the power consumption of white and blue bulbs is basically equal, that is, the power consumption of each bulb is about 3V * 0.02A = 0.06W, and the power consumption of red, green and yellow bulbs is basically equal. What is the power consumption of each bulb? 1.7V*0.02A=0.035W, multiplied by the total number of lamp beads.

3. If it is a happy lantern, it is converted according to the working condition ratio of lighting the lantern. Suppose it lights up every 3 seconds 1 s, which is equal to the power consumption at full light * 1/3. If the total power consumption is 4.4W, the actual power consumption is 4.4w *1/3 =1.5w. ..

Power actuarial of led light box

If the estimation can't meet your requirements, you can choose accurate measurement. Accurate measurement is more certain than estimation, but we need to use relevant tools in this process. Accurate measurement can be made according to the following methods:

1. Measure the actual output voltage v of the controller and the actual working current a of each string of light beads with a multimeter, and the actual power consumption of each string of light beads is p = V * A ... If it is a lantern, it is still converted according to the above working conditions.

2. Use power meters such as power monitor and smart plug to connect to the front end of led light box controller to test the actual AC power consumption of light box. When using the power meter, it should be noted that if the power consumption calculated by connecting to the back end of the led light box controller (that is, using DC) should also consider the efficiency of the light box controller, which is generally calculated as 80%, then the total power consumption of the led light box = calculated power consumption /0.8.

Through this article, do you have a further understanding of the calculation of led light box power? To learn more, please log in to Tuba Rabbit!

Tubatu Online provides you with "every decoration quotation, 1-4 local decoration companies, 3 sets of decoration design schemes" and the decoration pit avoidance strategy for free! Click this link:/Zhu Ye /zxbj-cszy.php? to8to _ from = SEO _ zhidao _ m _ jiare & amp； Wb, you can get it for free ~