How to calculate the load of outdoor LED electronic display

　　Set screen high H (unit mm mm, not MM to be transformed into mm), width W (unit MM);

　　Set the spacing of the screen point to P (unit mm);

　　Set screen scanning method S (such as dynamic 1/4 scan, writing 4, 1/8, writing 8, etc.; such as static scanning S = 1);

　　Set screen color type C (if only red is C = 1, such as red and green two colors C = 2, full color C = 3, etc.);

　　The transition voltage of the screen module is U, and the power terminal can be obtained by measuring the power terminal on the module; if there is no multimeter, the parameters on the switching power sources can be obtained;

　　During dynamic scanning, a color current can be set on a screen (that is, a pixel).

　　Then the unit area (1 square) power P calculates as follows:

　　P = u*[(w/sp*h/p)*(I/1000)*C]/s

　　If the efficiency of the switching power supply is considered (generally 80%to 85%), the power PO calculation is as follows:

　　PO = P/p

　　If you want to use the air-on cabinet, it is best to open the current of 1.5-2 times the load current and C-level sensitivity. If the power is large, it is best to open several groups inside the display and disconnect. Then open the power distribution cabinet to open and close, and then gradually open the interior of the display, so that it will not cause an empty opening or unsuitable.

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