LED modular development model: (1) light modular, (2) devices + PCB board integrated Zhengzhou led module, (3) light and power integration, (4) light source, power supply, cooling, integrated optics Chengdu led module, (5) connected to the port, the base standardization. Followed by the current, generally piranhas SMD LED lamp beads and bead current common is 20MA, but also a little better chip lamp beads can be done 25 to 30MA, the brightness will be better Beijing led module, but a certain program Effect of light failure, because it is three chip 5050 SMD package led modules in parallel, it's current is 60MA. Now after understanding the current and voltage can follow the resistance R = U / I to forget, pay attention to the voltage here is the voltage difference, the general power supply is 12V. Ie, the resistance R = external supply voltage - voltage lamp beads / lamp beads is the current size of the resistor to be allocated. As 12V-3V / 0.02 * 3A = 150 Euro, which is the general approach with resistance. Size of the resistor is particularly important in the application, if you want to extend the service life of LED lamp beads, we must remember this point oh. Zhanjiang led module | led module | Gao Jin photoelectric provided by Jinan Optoelectronics Technology Co., Ltd. Gao Jin. Jinan Gao Jin Optoelectronics Technology Co., Ltd. (www.gjlled.cn) strong, credible, in Jinan, Shandong liquid crystal device industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Gao Jin photoelectric and you hand into the brilliant, for a better future!