I recently bought a replacement laptop PC from Dell and was happy to see that its AC/DC power adapter had the same ratings as the ones I had from two now-defunct Dell laptops (19.5 V, 2.3 A/45 W).

AC/DC adapters are common types of external power supply units that are used for electronic equipment and other devices that cannot draw power directly from the main network. They change the ...

Portable consumer products increasingly rely on the USB port as a dc power port. The ubiquitous port obviates the need for designers to use that annoying external-power-supply “wall wart” to charge a ...

Traveling abroad and needing to charge all your devices? One downside to bringing electronics on a trip is figuring out which plug type fits where – especially since there’s a lot of different types ...