- the part of an electric machine that includes the main current-carrying winding and in which the electromotive force is induced.
- the pivoted part of an electric device, as a buzzer or relay, that is activated by a magnetic field.
- the iron or steel applied across the poles of a permanent magnet to close it, or across the poles of an electromagnet to transmit a mechanical force.
Origin of armature
Examples from the Web for armature
But Tarzan is also the armature for a heady display which reaches way beyond the simple chronicling of a pop phenomenon.
Fig. 307 is a form of armature similarly constructed, but with four independent coils wound upon the four projections.
The two armature coils are in series with the field-coils and the same disposition of the shunt or short-circuit D is used.
What is the nature of the current produced in the armature coil of a magneto, that is, is it direct or alternating?Physics|Willis Eugene Tower
As armature, commutator, and shaft rotate, the brushes connect first with one segment of the commutator and then with the other.General Science|Bertha M. Clark
The armature is straight, however, the part F resting upon D.How Two Boys Made Their Own Electrical Apparatus|Thomas M. (Thomas Matthew) St. John
Word Origin for armature
c.1400, "an armed force," from Latin armatura "armor, equipment," from armatus, past participle of armare "to arm, furnish with weapons" from arma (see arm (n.2)). Meaning "armor" is mid-15c.; that of "protective covering of a plant or animal" is from 1660s. Electromagnetic sense is from 1835.