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Alternating Current (AC)

maker

Alternating Current (AC) is an electric current which periodically reverses direction.

expanded

AC is used in most power distribution systems due to its efficiency in long-distance transmission and compatibility with electrical appliances like motors and heaters. This current type allows for easy voltage transformation using transformers, which is crucial for efficient electric grid design and operation.

examples

Household electrical outlets in the USA commonly provide 120 volts AC at a frequency of 60 Hz.

These outlets are used to power domestic appliances such as microwaves and lamps.

Industrial power systems typically use 380-415 volts AC, 50 Hz for heavy machinery operation in Europe.

AC systems in manufacturing facilities are used for engines, conveyor belts, and welding equipment.

related terms

Direct Current (DC)
Direct Current (DC) is the unidirectional flow of electric charge.
Inverter
An inverter is an electrical device that converts direct current (DC) to alternating current (AC).
Current
Current is the rate of flow of electric charge past a point in a circuit, expressed in amperes (A).
Converter
A device that transforms electrical signals or power from one format to another.
DC motor
An electric motor that runs on direct current (DC) electricity.