Jisho

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Noun
1. commutator
Wikipedia definition
2. Commutator (electric)A commutator is a rotary electrical switch in certain types of electric motors or electrical generators that periodically reverses the current direction between the rotor and the external circuit. In a motor, it applies power to the best location on the rotor, and in a generator, picks off power similarly. As a switch, it has exceptionally long life, considering the number of circuit makes and breaks that occur in normal operation.
Read “Commutator (electric)” on English Wikipedia
Read “整流子” on Japanese Wikipedia
Read “Commutator (electric)” on DBpedia

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