Changes

''For the [[rock]] band, see [[AC/DC (band)]]''

''For the [[rock]] band, see [[AC/DC (band)]]''

'''AC/DC''' refers to [[alternating current]] and [[direct current]] [[electricity|electrical]] systems.

'''AC/DC''' refers to [[alternating current]] and [[direct current]] [[electricity|electrical]] systems. When an electrical appliance is labelled AC/DC, this means that it will work equally well on either an alternating current or a direct current supply.

[[Thomas Edison]] was opposed to AC current, and prompted DC current unsuccessfully.

In the past, the electricity supplies to homes and businesses might use direct current or alternating current, hence the need for AC/DC appliances.  [[Thomas Edison]] favored the direct current system, while [[George Westinghouse]] favored the alternating current system. Each system had its advantages and disadvantages but the AC system became the dominant one and is now almost universal.

==References==

==References==