About 320W. When using a 400W power supply, it can be a Qiaosui with a Kabu light box of about 320W. Kabu light box refers to a type of light box composed of an aluminum profile frame, a high-brightness LED light bar and a light box screen.

There is a formula p=ui, and the power of a small lamp is 3*20ma=0.06w. The circuit has 9 areas, 100 in each area, and the total power is 9*100*0.06=54w. Since they are all connected in parallel, the current in each path is equal to 3*100*20ma=6a. So the total current is 6 *3=18a, the 3v power supply selected by Shanshan must be driven by Wei Qinghong, and it is better to connect a current-limiting resistor in series on each branch. Just use a 12v8a power supply to drive it. If the lights in one or three areas are broken, the others will not burn out because they are connected in parallel and do not affect each other.

Of course there is no problem. Your power supply capacity has been increased but the voltage has not changed. It can be applied to current light boxes and is closer than the original ones. Use it.

According to your description, it seems that you are talking about the 400W power box on the inside. It repre sents capacity, and Hengxian Sun can supply 400W of electrical equipment. A hidden friend that has nothing to do with power consumption. Power consumption mainly depends on the power of the lamp.