As an important power connector, DC socket is widely used in various electrical equipment. For example, mobile devices such as cell phones, tablet PCs, rechargeable batteries and other mobile devices need to use DC sockets for charging; new energy vehicles, electric bicycles and other means of transportation need to use DC sockets for charging; medical equipment, industrial control systems, and other special areas also need to use DC sockets for power connection.

DC power socket pin definition

The dc socket consists of three pins, pin 1 represents the common pole, that is, the negative pole, pin 2 and pin 3 are the same pole, that is, the positive pole. pin 2 is with the internal electricity, and 3 is with the external electricity.

Normal use of 2 pins and 3 pins on state, with the internal power supply, when inserted into the external power supply, 3 and 2 disconnected, then directly connected to the 3 pins, the external power supply through the 1 pin and the 3 pin power supply, the 2 pin is disconnected at this time.

Classification of DC sockets

DC sockets can be divided into different types according to different classifications. According to the shape, DC socket can be categorized into straight plug type and side plug type. Straight socket plug and socket parallel, suitable for horizontal installation of equipment; side plug socket plug and socket vertical, suitable for vertical installation of equipment. According to the number of interfaces, DC sockets can be divided into single-port and multi-port. Single-port sockets have only one interface and are suitable for simple power connections; multi-port sockets have multiple interfaces and are suitable for power connections of multiple devices. According to the voltage level, DC sockets can be categorized into high voltage and low voltage. High-voltage sockets are suitable for high-voltage power environments, and low-voltage sockets are suitable for low-voltage power environments.

Working Principle of DC Socket

DC socket is a kind of interface that connects the battery or power supply with electrical equipment through wires to realize the transmission of direct current. It consists of two parts, the plug and the socket. the plug is inserted into the socket, and the DC power is transmitted to the electrical equipment through the contact of the contact piece and the spring piece. the DC socket usually has a high current capacity, and it can meet the power demand of various different equipments.