HP INCFollow


In a PC the process of power delivery starts with the AC adapter and DC jack interconnect. The adapter is

plugged into a DC jack to supply power to the PC. A DC jack typically includes a center barrel made of plastic,

which helps separate the power and ground contacts to help to prevent a short from occurring. Figure 1 and 2 show

the normal state of the DC jack and the risk condition of exposed pins when the center barrel is damaged. The

center barrel and other internal plastic components of a DC jack plays a pivotal role in ensuring safety of a PC unit

during operation.

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