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commutator
noun
com·mu·ta·tor ˈkäm-yə-ˌtā-tər 
-yü-
1
: a series of bars or segments connected to the armature coils (see armature sense 2b)of a generator or motor so that rotation of the armature will in conjunction with a set of fixed brushes (see brush entry 2 sense 3) convert alternating current into direct current
Example Sentences
Recent Examples on the Web The commutator and wires inside the fuel pump may be fused incorrectly, potentially causing the fuel pump to fail. 
USA TODAY, 11 Feb. 2022 Instead of brushes and a commutator, a small circuit board coordinates the energy delivery to the windings. Doug Mahoney, Popular Mechanics, 14 June 2021 Before Tesla, inventors had always designed electric motors so that the magnetic field of the stator was kept constant and the magnetic field in the rotor was changed by means of a commutator. National Geographic, 27 Sep. 2019 While watching how a DC motor sparked during a demonstration in his physics class, Tesla suggested that the commutator (the rotating switch feeding electricity to the rotor in the motor) should be eliminated. National Geographic, 27 Sep. 2019
USA TODAY, 11 Feb. 2022 Instead of brushes and a commutator, a small circuit board coordinates the energy delivery to the windings. Doug Mahoney, Popular Mechanics, 14 June 2021 Before Tesla, inventors had always designed electric motors so that the magnetic field of the stator was kept constant and the magnetic field in the rotor was changed by means of a commutator. National Geographic, 27 Sep. 2019 While watching how a DC motor sparked during a demonstration in his physics class, Tesla suggested that the commutator (the rotating switch feeding electricity to the rotor in the motor) should be eliminated. National Geographic, 27 Sep. 2019 Word History
First Known Use
1880, in the meaning defined at sense 1
Time Traveler
The first known use of commutator was in 1880 👨🏻🏫 Mr. Ng 韋氏詞典 📚 – mw.mister5️⃣.net
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