More accurate calculation method LED unit board: length × height using cell plate number plate = total number of units using the number of LED unit board such as: 5 meters long, 2 meters high P16 led monochrome display uses several modules: LED display screen long use cell plate number = 5 meters ÷ 0.256 米 = 19.53125≈20 a LED display high-use unit number plate = 2 meters ÷ 0.128 米 = 15.625≈16 a LED display uses the total number of LED unit board = 20 × 16 LED light source driving program a = 320 Also switching mode power supply, although the circuit with high energy conversion efficiency advantage, but in fact switching power components must be used with magnetic energy transfer, which would result in switching mode power supply drive circuit generates a larger volume line relatively complex issues, while discrete components required for switching power more not suitable for module design into LED lighting applications, the use of the driving circuit switched it will result in new restrictions on the design of lighting applications, such as the end product thumbnail Jiangxi led unit board design is not easy, or high product design complexity and other issues. Instead, the implementation of a linear constant current LED light source drive circuit architecture Jiangsu led unit board, you can because no external storage or energy conversion components, can greatly simplify circuit design complexity, but also with small size, low cost, small discrete components, such as design Advantages for SoB single circuit board lighting module design. Ningxia led unit board, Gao Jin photovoltaic (certified), led unit board provided 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.