Alternating current
principle · 1886 · Electric age
A current that periodically reverses direction; the Tesla–Westinghouse system.
Principles and materials it uses
- Electromagnetic induction — uses. Alternating current is produced by induction generators.
Where it is used
- Electrical grid — is used in. Grids run on alternating current.
- Transformer — is used in. It works only on alternating current.
- Three-phase system — is used in. A three-phase system is three alternating currents shifted against each other.
- Rectifier — is used in. A rectifier turns alternating current from the socket into direct current.