armature

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“
This armature is attracted by the electromagnet, E E (whose resistance is 1,200 ohms), whenever a current circulates through it.

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Definitions (15)

Toggle American Heritage definitions American Heritage Dictionary (5)

  1. noun Electricity The rotating part of a dynamo, consisting essentially of copper wire wound around an iron core.
  2. noun Electricity The moving part of an electromagnetic device such as a relay, buzzer, or loudspeaker.
  3. noun Electricity A piece of soft iron connecting the poles of a magnet.
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Examples (50)

  • If, on the contrary, the incoming current on the main line be strong, the armature will be strongly attracted, the carbon will be sharply compressed, the resistance in the local circuit will be proportionately lowered, and the signal heard on the local sounder will be a loud one. —  Edison, His Life and Inventions
  • He chose the drum form for his armature, and experimented with different kinds of iron. —  Edison, His Life and Inventions
  • He also considered various forms and shapes for the armature, and by methodical and systematic research obtained the data and best conditions upon which he could build his generator. —  Edison, His Life and Inventions
  • This extension arm is pivoted at B. Hence, as the armature is alternately attracted when current passes around its electromagnet, and drawn up by the spring on cessation of current, it moves up and down, thus actuating the escapement and causing a rotation of the toothed wheel in the direction of the arrow. —  Edison, His Life and Inventions
  • It will at once be perceived that this action takes place when current flows through the electromagnet and its armature is attracted downward, the platen again dropping away from the type-wheel as the armature is released upon cessation of current. —  Edison, His Life and Inventions
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Etymologies (2)

Toggle American Heritage etymologies American Heritage Dictionary (1)

  1. Middle English, armor, from Old French, from Latin armātūra, equipment, from armātus, past participle of armāre, to arm; see arm2.

Toggle Century etymologies Century Dictionary (1)

  1. = French armature = Provencal Spanish Portuguese armadura = Italian armadura, armatura, from Latin armatura, armor, equipment, armed troops, from armatus, past participle of armare, arm: see arm, v. Doublet, armor, q. v.
 

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/ˈɑrmətʃjur/
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