In order to adjust the color temperature of white LED light source modules, it is necessary to white LED modules in the blue, green and red 3 LED chip drive current controlled individually, we need three separate constant current drive circuit. Currently, color led module, constant current drive circuit is generally used switch-mode PWM controller to achieve its drive current regulation is divided into analog adjustment mode and PWM adjustment method. advantage led module manufacturers cost of the current grain products led module, the LED module industry are continuing efforts to reduce costs. At present, most application vendors are using SMD LED to assemble a variety of lighting structures. As mentioned above, led module SMD LED light source compared to the use of more materials and manufacturing process, the cost of these important factors are taken into account. Led module light source in Hebei led module, SMD LED by reducing the number of materials (such as aluminum plates, welding materials), as well as the production process led module manufacturers which costs, which can significantly reduce the cost of LED applications. Hebei led module, Gao Jin photoelectric, procurement led modules provided by Jinan Optoelectronics Technology Co., Ltd. Gao Jin. Hebei led module, Gao Jin photoelectric, procurement led module Jinan Gao Jin Optoelectronics Technology Co., Ltd. (www.gjlled.cn) this year introduced a new upgrade, the above picture is for reference only, please call the telephone or pictures on this page, For the latest information, contact: high total.