The power connector consists of a female connector, a blade, a needle, a socket and a plug. Power connector is an important link connecting the power supply and equipment, providing electric energy for the normal operation of the equipment. Power entry connector is an indispensable component of electronic products and equipment. Its main function is to connect two active devices, transmit current or signal, thus building a bridge between the interrupted parts of the circuit and encourage different circuits, so that the current can flow smoothly.