Some Tips On Shopping For Replacement AC Power AdaptersSkip Way Below to the Short Version
AC Adapters: Why we need them
Electronics devices can very rarely run off the power that comes straight out of your home's electrical outlets. That power has to be converted to something that more closely matches the needs of the electrical device you are trying to use. For one, the power that comes from your outlets is AC power and almost all electronics devices these days, need DC power.