Monthly Archives: November 2013

November 26, 2013 by

Current and amps – in a flash

I get asked about amperage several times a day – questions like “My router needs 1A, but your power adaptor says 2A – won’t that damage it?”

Current (also called amperage) is drawn by the device, not delivered to it, and the device draws only the current it needs from the max available to it. So if your device needs 1A, and our power adaptor provides max 2A, then your device will draw only the 1A it needs, and will power up no problem. Hurrah!

TLDR; As long as your device needs less A than the max A written on the PSU, you’re good to go.

But you’ll still need to worry about voltage, polarity, tip size, and whether the PSU gives out AC or DC voltage. Things are never simple, are they?