Four factors of stage rental LED display engineering project design（二）
3、 Design of LED display control circuit The LED control part is the core part that determines the display effect. The control circuit has a high-performance single-chip micro control chip. The controller sends the control signal and data to the LED driver chip through the internal control program. After receiving the signal, the LED driver chip generates the corresponding action, so as to realize the independent control of each red, green and blue LED light-emitting chip. 1. Outdoor LED floor drive system The function of LED driving part is to receive color data and drive the LED display screen to display according to the brightness value represented by the data. There are usually three # modes: constant current, constant voltage and constant current. The output current of the constant current drive circuit is constant, and the output DC voltage changes with the change of load resistance. The whole circuit is not afraid of load short circuit, but it is strictly proh...