AC-DC wall adapters aka "wall warts" are power supplies that may or may not be regulated. They convert 120Vac (or 220Vac) to a lower DC voltage. If unregulated the output voltage can fluctuate depending on the load. The output load is always higher than listed because it drops to the correct voltage when in use, so it is a good idea to get an AC-DC wall adapter that operates close to the desired current. We have a large selection of regulated and unregulated DC-DC wall adapters.
