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, etc. 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.

Classification of DC socket

DC socket can be divided into different types according to different classification. According to the shape, DC socket can be categorized into straight plug type and side plug type. The straight plug socket plug is parallel to the socket and is suitable for equipment installed horizontally; the side plug socket plug is perpendicular to the socket and is suitable for equipment installed vertically. 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. dc sockets usually have a high current capacity, which can satisfy the power demand of various different equipments.

DC Power Socket Pin Definition

The dc socket consists of three pins, pin 1 represents the common pole, which means the negative pole, and pins 2 and 3 are the same pole, which means the positive pole. pin 2 is for internal power and pin 3 is for external power.

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