Originally Posted by crashbot
and what are these "wall warts" you all speak of?
Power sources for many electronic devices. Originally
they were all simply small transformers in a little
(usually) black box with a built in AC plug. when plugged
in to an AC outlet, they looked like a "wart" on the wall.
As they evolved, they became transformers with a linear
regulated DC supply, then finally morphed to switching
regulators. All versions seem to still be still available, with
switching regulators becoming more dominant.
In almost all cases, their job is turning high voltage
(117VAC/234VAC) into low voltage DC usually 3VDC
to maybe 20VDC........