Loaʻa nā noi o nā commutators i nā mīkini DC (direct current) e like me nā mea hana DC, nā kaʻa DC he nui, a me nā kaʻa honua. Ma kahi kaʻa DC, hāʻawi ka commutator i ka uila i nā wili. Ma ka hoʻololi ʻana i ka ʻaoʻao o ke au i loko o nā wiliwili ʻāwili i kēlā me kēia hapalua o ka huli ʻana, e hana ......
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