ETYM Greek solen channel + -oid.
An electromagnetic device that converts electrical energy to mechanical movement, typically consisting of an electromagnet with a movable rod through the center.
Cylindrical wire coil acting as a magnet when charged.
A coil of wire around an iron core; becomes a magnet when current passes through the coil.
Coil of wire, usually cylindrical, in which a magnetic field is created by passing an electric current through it (see electromagnet). This field can be used to move an iron rod placed on its axis.
Mechanical valves attached to the rod can be operated by switching the current on or off, so converting electrical energy into mechanical energy. Solenoids are used to relay energy from the battery of an automobile to the starter motor by means of the ignition switch.
Tubular coil of wire producing magnetic field. + prikaži više