Quick charger's circuit structure

The utility model discloses a quick charger's circuit structure, including elementary IC, transformer, secondary IC, pull -up resistance and pull down resistor, the AC input is connected to elementaryIC's input, and the primary side of transformer is connected to elementary IC's output, the positive pole of the secondary side of transformer and the stitch that the USB interface is connected respectively to the negative pole, the stitch of USB interface is connected to secondary IC's input, detect USB interface D+ and D elementary IC's input is connected to signal, secondary IC's the output first via, and pull -up resistance one end is connected on secondary IC's output second way, pull -up resistance other end ground connection, and pull down resistor one end is connected on secondary IC's output third way, and the positive pole of the secondary side of transformer is connected to the pull down resistor other end. The utility model discloses can realize big capacity batteries's quickcharge. 本实用新型公开种快速充电器的电路结构