Full-color LED unit board color temperature adjustable LED drive circuit design in order to stabilize the output light intensity, color temperature, and to achieve light intensity, color temperature adjustment, interior design, a full-color LED unit board drive circuit diagram shown in Figure 4 shows, which were used with blue, green and red filters light intensity detectors constitute full-color LED unit board of three kinds of LED light intensity monitor color led module, and control through the AVR microcontroller to change the duty cycle of the PWM control signal corresponding steady blue, green, red 3 LED light intensity led module board, to stabilize the full-color LED unit board of light intensity and color temperature, where each LED drive circuit are LT3474 used as the drive control chip. 74HC595 internal circuit control signals for all four groups of RCK 74HC595, SCK, EN all together. 74HC595 control signal and the input and line scan four groups serial shift register control signals A, B, C, D constitute the input of the LED unit board; after 74HC595 control signal by the driver and four sets of serial shift register After the drive output and line scan control signal A, B, C, D constitutes the output of the LED unit board for input cascade a LED unit board. led module board, high Jinliang photovoltaic (certified), led module provided by the Jinan High Jinliang Optoelectronics Technology Co., Ltd .. Jinan High Jinliang Optoelectronics Technology Co., Ltd. (www.zhkyled.com) is an industry leader in Jinan, Shandong, liquid crystal device, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In high Jinliang photoelectric leadership with the staff warmly welcome all inquiries negotiations to create high Jinliang photoelectric a better future.