DC Jack

A DC jack male is a power connector used to supply DC electrical power from an adapter, battery, or power source to an electronic circuit or device. It is commonly used with DC barrel sockets and is available in different sizes, such as 5.5 mm × 2.1 mm. The male DC jack usually has two wires or terminals: positive (+) and negative (−). It is commonly used in Arduino projects, LED circuits, motor-driver projects, CCTV systems, and other electronic applications to provide a convenient and removable power connection.