DC SOCKET (BARREL JACK)

DC Socket is a power outlet that is found in automobiles and trucks. The socket is typically used for cigarette lighters, though most modern cars contain multiple outlets. These DC Socket provide low voltage power for cell phones and other small electronic devices that require DC power connections. Most portable generators include DC socket connections. This is a great option for campers and tailgaters. DC Socket adaptors work well on small radios and televisions. The socket uses a small male connection that is shaped like a light socket.

DC female power jack are commonly used in electronic industry to connect adapters to your circuit board. Most commonly used DC female jack is 2.1mm x 5.5 mm DC jack. Where 5.5mm is the outer diameter and 2.1mm is the intrenal pin size.

The DC plug (male) should match this dimension for proper matching. Most of the non proprietary co-axial power plugs match the 2.1 x 5.5 dimensions. In most of the DC plug the outer body is the negative supply and the internal is the positive.