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What Is a DC Power Jack Connector and How Does It Work?

Views: 224     Author: Lydia     Publish Time: 2023-11-30      Origin: Site

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What Is a DC Power Jack Connector and How Does It Work?

DC Jack power connectors are an important part of modern electronic gadgets that use a direct current (DC) power supply. DC power connectors are the way to go if you need to connect external power sources, such as AC adapters or batteries, to electronic devices like laptops, tablets, routers, or other gadgets that require a constant DC power supply.

What Is a DC Power Jack Connector and How Does It Work? Picture of the Day

Concerning Power Connectors

Electrical devices require a secure and dependable power transfer, which power connectors provide. These connections are designed to be an important electrical component that facilitates the safe and efficient transfer of electricity from one device to another. One of these is the DC Power Jack connector.

Connectors for Power

DC Power connectors are available in a range of shapes and sizes, and are normally designed to suit the voltage and amperage needs of the item being powered. The power connectors are composed of two or three metal prongs that are installed on the device's printed circuit board (PCB) or on a separate power jack board.

2.Degree Dc Cable

Some examples of common power connectors are:

AC power plugs: are used to connect gadgets to electrical outlets.

DC power connectors (jacks) are used to connect devices to power sources or batteries.

USB connectors are used to power and transfer data between devices.

DC Power Connectors of Various Types

IEC DC power connectors are dc power connectors that adhere to the International Electrotechnical Commission (IEC) standard. IEC DC power connectors come in a variety of styles, including:

5.5 mm OD, 2.5 mm: Type A It is a male plug coaxial power connector with a central pin for positive voltage and an outside shell for ground connection. In audio applications, this equipment is often used in amplifiers and mixers.

6.0 mm OD, 2.5 mm: Type B It is a coaxial power connector with a female jack and a threaded outer shell for the negative or ground connection, as well as a center hole for the male plug's central pin. Routers, modems, and external hard drives are just a few of the many electrical gadgets that make use of this technology.

Type C: 3.8 mm OD, 1.1 mm: This is a male DC power connector with two pins for positive and negative connections. This gear is frequently used in automotive and marine applications.

6.3 mm OD, 3.1 mm: Type D This is a DC power connector with a female jack and two holes for the two pins of the male plug. It is extensively utilized in low-power LED lighting and other applications.

Type E: 3.4 mm OD, 1.3 mm: This is a male DC power connector with three pins for positive, negative, and ground connections. It's ubiquitous in electronic equipment like laptops and printers.

How Does a DC Power Jack Connector Work?

DC Jack power connectors have become a widely recognized element of modern technology, and their dependability and longevity are crucial for assuring the proper operation of electronic devices. It is vital to understand the many types of DC Jack power connections and select the proper connector for a given device to avoid compatibility issues or damage to electronic equipment.

Connectors for direct current

Understanding the Varieties of DC Power Jack Connectors

DC There are various types of Jack Power connections, each having its own design, shape, and size. Here are some examples of the most common:

1. Barrel Connector: This is one of the most prevalent DC Jack connector kinds. It is made up of a male plug and a female jack. The male plug has a pin in the center, and the female jack has a hole with the same radius as the pin.

2. Coaxial Power Connector: This type of Jack connector has a cylindrical form, similar to a barrel connector. has a center pin and an outer ring that acts as a ground connection, while the central pin carries power.

3. Screw Terminal Connector: This type of connector is used to secure wires and offer a dependable connection in high-current applications. This Jack connector with screw terminals is a great option.

4. DC push-on Terminal Connector: A push-on DC plug, also known as a snap-in DC plug, is a form of power connector that consists of a male plug and a female jack.


DC connectors have standard dimensions of 5.5mm (outer) x 2.1mm (inner) and 5.5mm x 2.5mm.

5V, 9V, 12V, and 24V are some common voltage levels for power coaxial connectors.

Connectors for barrels

Plugs composed of circular iron sleeves (barrels) isolated by an insulating layer are the most prevalent type of barrel connector. The barrel jack has a pin that fits into the inner sleeve of the plug, typically with a loose clearance, and a spring that makes contact with the sleeve of the plug.

image credit: cuidevices

It should be noted, however, that not all barrel power connectors are created equal. The sizes, shapes, and pin combinations of barrel connections might vary. To avoid harm to the device or power source, it is vital to select a connector that fits the device's power requirements.

A coaxial power connector is a dc power connector with a cylindrical outer shell and a central pin. Another term for it is a coaxial DC power plug, coaxial power jack, or simply coaxial connector. The positive voltage is carried by the central pin, while the negative or ground connection is carried by the outer shell. It is normally threaded to connect to the device's power input or the power supply.

DC Coaxial Connector

If you need a DC power connector that is suited for high-current applications. A screw terminal adapter connector is an excellent choice. It is made up of a male and female plug, as well as screw terminals for attaching wires to the power supply.

On the circuit board of the device, the female jack normally has a central hole that matches the diameter of the male plug. If the power requirements of the device change, screw terminal adapter connectors can be readily replaced or upgraded.

The male plug, which has a cylindrical shape with a central pin that carries the positive voltage and a spring-loaded outer sleeve that connects to the negative or ground connection, is commonly connected to the device's power input's female jack. The female jack is installed on and has a center hole that matches the diameter of the male plug.

Simply push the male plug into the female jack until it snaps into position to connect the push-a-plug. Pushing down on the outer sleeve unlocks the connection, allowing you to unplug the plug.

Push adapter plugs are an ideal solution for frequent plugging and unplugging. Because of their simplicity of connection and disconnection, they provide the benefit of convenience.


Finally, a DC power jack connector is an important component that allows electronic equipment to be powered efficiently. It is made up of a male plug and a female jack that connect to transmit electricity to the device. A DC power jack connector, when used and handled correctly, can provide a long-lasting power connection for your electronic gadgets.

Understanding the fundamentals of DC power jack connectors is essential for anyone dealing with electronics or powering equipment.

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