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An “armature” can refer to several different components depending on the context:

  1. Relay, Regulator, Horn, etc.: The movable part of the unit that responds to electric current, typically to actuate or control a mechanism.
  2. Magnetic Application: A piece of low-reluctance ferromagnetic material (often called a keeper) used to bridge the poles of a permanent magnet temporarily, reducing the leakage field and preserving magnetization.
  3. Starter or Generator: The rotating part between the pole shoes, consisting of wire windings (often copper) on an iron core or axle. When the armature rotates, it induces an electric current.
  4. Electric Motor or Generator: The part moved by magnetism within these devices, consisting of wire windings on an iron core, responsible for generating or receiving electrical energy.
  5. Model Making: The supporting structure (wooden, metal, or hard-foam) under a clay model, used in sculpture or prototyping.

Each definition highlights the versatility of the term “armature” across different fields of technology, engineering, and art.

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