High-frequency switching power supply for charging instrument

In this paper, a kind of high firequency switching power for charging system is introduced It is with the properties of high efficiency, small dimension and can be controlled by the central monitor The charging system consists of main loop and monitor system The main loop circuit transforms the AC voltage to stable DC voltage by switching power Monitor system receives all lands of parameter and control demand and it can detect operating parameter and output DC voltage. The monitor system will alarm when input voltage is higher or lower than the proper voltage, or when the IGBT is overload Monitor system can communicate with the central monitor system, thus remote-detection, remote-control and remote-adjustment is fulfilled To improve the reliability of system, watch-dog circuit is adopted to avoid the system falling into confusion. When the system power shut down, all lands of data are preserved and the charging instrument can be recovered Operating parameter, condition of breakdown will displayed on the screen. The anti-interference method of this system can guarantee the system work safely and reliably.