Ahakoa he aha nga hua e whakamahia ana me maarama etahi korero, he mea kee te kaiwhakahaere motuka dc. Ki te dc motini mana kia pai ake te whakamahi, me whakamahi nga korero i raro nei. 1. Ki te kore he whakaritenga motuhake o te hua i raro i te ngaohiko whakatau o te dc motika pūmana e kore e whakaaetia ki te whakahaere i te pūnaha hononga whakamuri. No te mea kotahi ki te whakahaere i te pūnaha whakamuri, ka taea e aukume demagnetization pūmau, ki te kore e hiahia ki te rere i roto i tenei ara, ka tāpiri i nāianei whāiti parenga ki te whakawhāiti nāianei he nui rawa. 2. Kia mahara ki te karo i te taikaha o te naianei, te pāmahana me te ara iahiko autō i te wa e wetewete ana ka puta te demagnetization aukume tuturu, ina koa ko te konumohe nickel me te konukawata mauku motuka motuka, ka wetewete i te hiahia mo te whakamarumaru ara iahiko poto, karohia kia paheke. 3. A, no te te whakakapinga paraihe, Me ki i runga i te puehu waro hiko a tawhio noa ki te horoi ake, ka whakamahi waipiro, penehīni ki te horoi i te commutator. I te wa ano me aro ki te whakamahi i te paraihe hou kaore he kawenga e rere ana. Neke atu i te whakamahinga o nga korero motika motuka dc i tenei wa, ko te tumanako ka awhina koe.
Ko te roopu HOPRIO he kaihanga ngaio o te kaiwhakahaere me nga motuka, i whakapumautia i te 2000. Te tari matua o te roopu i Changzhou City, Jiangsu Province.
