An adjustment method using current values
An adjustment method based on the pulse-amplitude modulation technique
The adjustment of the current value method mainly is to change the current value to adjust the brightness of the assumption of luminosity to 1 time, white light luminosity and luminosity to 1.7 times of the current, the photometric into three times, although the intensity of illumination and the current value is not a proportional relationship, red is a proportional relationship, the main reason is that the red, green, and blue chips property caused by dissimilar to each other.
Operating principle of Ed drive IC:
The chip contains a constant-current generating circuit, which can be set to output constant-current value through external resistance. The switching time of the output channel can be controlled through the enabling end of the chip, and the switching frequency can reach up to 1MHz.The current output response is very fast, supports the application of high color change and high screen refresh rate. The built-in open circuit detection, overheat power off, and over current protection functions greatly improve the reliability of the application system.
Drive IC: LED is a light-emitting diode, when the number of diodes or tube more power consumption needs to drive and is a few stages of the drive, the several stages of the drive into an integrated electronic chip, the chip is called drive IC, simply to play the role of providing compensation current to the diode.