How it works: The three-phase 380V 50Hz grid filter through, Linyi strip screen rectified and filtered DC voltage over 500 volts supply series resonant converter. Since the power output of up to 20kV, Linyi monochrome screen in order to reduce design complexity and reduce the voltage value of the transformer high-voltage rectifier diodes, Linyi full color to improve the reliability of power supply, Linyi door panel using transformer secondary are two full-bridge rectification outdoor LED display, then superimposed output. Linyi color screen full bridge converter consists of four IGBT, a high-frequency transformer and rectifier circuit. The control circuit provides two pairs of insulated from each other by 180 ° out of phase pulse input to IGBT drive circuit display, control IGBT-off. DC voltage converted into 20kHz pulse voltage alternating, via the transformer and full-bridge rectifier and filter circuit to obtain tens kV voltage. Auto (ratio) adjustment type 1, a mechanical booster type, Shandong full color that is driven by a servo motor carbon brush in the sliding surface of the autotransformer winding movement, full color display manufacturers to change the ratio of Vi Vo, and full color to adjust and achieve a stable output voltage. Shandong full color display manufacturers this kind of regulator can be from a few hundred watts to several kilowatts. It is characterized by simple structure in Shandong full color manufacturers, low cost Shandong LED display, output waveform distortion; Shandong full color Which is good but due to carbon brush sliding contacts is easy to produce a spark, causing damage and even burn brush and failure; and the voltage adjustment is slow. 2, change the tap-type LED display manufacturers, will be made autotransformer Shandong full color plurality of fixed taps through a relay or triac (solid state relay) full color manufacturers offer as a switching device 10, automatically change the wiper position, in order to achieve a stable output voltage. LED display, display, provided by the Thai macro photoelectric Linyi Wang Tai Electronics Co., Ltd. Linyi Wang Tai Electronics Co., Ltd. (www.ledzkd.com) (www.ledzkd.com) strong, credible, in Linyi display equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Hong Thai Optical into the brilliant and you work for a better future!