Also switching power LED light source driving scheme led lamp price, although the circuit has a high energy conversion efficiency advantage led what that means, but in fact switching power components must be used with magnetic energy transfer, which would result in switching mode power supply driving circuit larger, the line is relatively complex issues while switching power supply more discrete components required, not suitable for introducing LED lighting applications module design, the use of the driving circuit switched it will result in new restrictions on the design of lighting applications led full color display, such as the end product miniature design is not easy, or other issues of high design complexity. Instead, the implementation of a linear constant current LED light source driving circuit architecture, because no external storage or energy conversion components, can greatly simplify circuit design complexity, but also with small size, low cost, less discrete components, such as design advantages for SoB single circuit board lighting module design. LED drive current regulation mode PWM mode PWM regulator is the use of a specific duty pulse driving waveform in a cycle to drive the LED approach. Shenzhen Optoelectronic Technology Co., clouds, the average duty cycle of the LED drive current depends on the pulse waveform and LED rated drive current at a fixed LED rated drive current. By varying the duty cycle, it can change the average LED drive current, thereby changing the output of LED light intensity. In order to avoid flickering effect. Frequency pulse waveform typically greater than 200Hz. led display, Gao Jin photovoltaic (certified), led by Jinan Optoelectronics Technology Co., Ltd. Gao Jin. Jinan Gao Jin Optoelectronics Technology Co., Ltd. (www.gjlled.cn) is an industry leader in Jinan, Shandong, liquid crystal devices, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Gao Jin photoelectric leadership with the staff warmly welcome all inquiries negotiations to create high gold Photoelectric better future.