Examples of dynamo in the following topics:
-
- If Earth's dynamo shut off, the dipole part would disappear in a few tens of thousands of years.
- Electric currents induced in the ionosphere generate magnetic fields (ionospheric dynamo region).
- Shorter time scales mostly arise from currents in the ionosphere (ionospheric dynamo region) and magnetosphere, and some changes can be traced to geomagnetic storms or daily variations in currents.
-
- Direct current is produced by sources such as batteries, thermocouples, solar cells, and commutator-type electric machines of the dynamo type.