Galimoto ya DC imalumikizidwa ndi magetsi kudzera pa burashi ya commutator.Pamene magetsi akuyenda mu koyilo, mphamvu ya maginito imapanga mphamvu, ndipo mphamvu imapangitsa kuti injini ya DC izungulira kuti ipange torque.Liwiro la brushed DC motor limatheka ndi kusintha voteji ntchito kapena maginito mphamvu.Ma mota a maburashi amakonda kutulutsa phokoso lambiri (zomveka komanso zamagetsi).Ngati maphokosowa sali okha kapena otetezedwa, phokoso lamagetsi likhoza kusokoneza kayendedwe ka galimoto, zomwe zimapangitsa kuti galimoto ikhale yosasunthika.Phokoso lamagetsi lopangidwa ndi ma motors a DC litha kugawidwa m'magulu awiri: kusokoneza kwamagetsi ndi phokoso lamagetsi.Ma radiation a electromagnetic ndi ovuta kuwazindikira, ndipo vuto litadziwika, zimakhala zovuta kulisiyanitsa ndi magwero ena a phokoso.Kusokoneza mawayilesi kapena kusokoneza kwa ma radiation kumachitika chifukwa cha kulowetsedwa kwamagetsi kapena ma radiation a electromagnetic opangidwa kuchokera kunja.Phokoso lamagetsi lingakhudze mphamvu ya mabwalo.Phokosoli limatha kuyambitsa kuwonongeka kosavuta kwa makina.

Pamene injini ikuyenda, nthawi zina pamakhala phokoso pakati pa maburashi ndi commutator.Spark ndi chimodzi mwazomwe zimayambitsa phokoso lamagetsi, makamaka injini ikayamba, ndipo mafunde okwera kwambiri amalowera m'makona.Mafunde okwera nthawi zambiri amayambitsa phokoso lalikulu.Phokoso lofananalo limachitika pamene maburashi amakhala osakhazikika pamtunda wa commutator ndipo kulowetsa kwa injini kumakhala kokwera kwambiri kuposa momwe amayembekezera.Zinthu zina, kuphatikizapo kutchinjiriza komwe kumapangidwa pamalo oyendera, kungayambitsenso kusakhazikika kwapano.

EMI imatha kulumikizana m'magawo amagetsi amotor, zomwe zimapangitsa kuti ma motor alephere kugwira ntchito ndikuchepetsa magwiridwe antchito.Mulingo wa EMI umadalira zinthu zosiyanasiyana monga mtundu wa mota (burashi kapena brushless), kuyendetsa mawonekedwe ndi katundu.Nthawi zambiri, ma motors opukutidwa azipanga EMI yochulukirapo kuposa ma motors opanda brush, ziribe kanthu mtundu wanji, kapangidwe kagalimoto kadzakhudza kwambiri kutayikira kwamagetsi, ma mota ang'onoang'ono opukutira nthawi zina amapanga RFI yayikulu, makamaka yosavuta LC Low pass fyuluta ndi chitsulo.

Phokoso linanso lochokera kumagetsi ndi magetsi.Popeza kukana kwamkati kwamagetsi si zero, pamayendedwe aliwonse ozungulira, ma motor osakhazikika amasinthidwa kukhala ma voliyumu pamagetsi opangira magetsi, ndipo mota ya DC ipanga panthawi yogwira ntchito kwambiri.phokoso.Kuti muchepetse kusokoneza kwa ma electromagnetic, ma mota amayikidwa kutali kwambiri ndi mabwalo ovuta momwe angathere.Chophimba chachitsulo cha mota nthawi zambiri chimapereka chitetezo chokwanira kuti chichepetse EMI yoyendetsedwa ndi mpweya, koma chowonjezera chachitsulo chowonjezera chiyenera kupereka kuchepetsa kwa EMI.

Ma electromagnetic ma sign opangidwa ndi ma mota amathanso kulumikizana m'mabwalo, ndikupanga zomwe zimatchedwa kusokoneza wamba, zomwe sizingathetsedwe ndi chitetezo ndipo zitha kuchepetsedwa bwino ndi fyuluta yosavuta ya LC.Kuti muchepetse phokoso lamagetsi, kusefa pamagetsi kumafunika.Nthawi zambiri zimachitika powonjezera capacitor yokulirapo (monga 1000uF ndi kupitilira apo) kudutsa ma terminals kuti muchepetse kukana kokwanira kwa magetsi, potero kuwongolera kuyankha kwakanthawi, ndikugwiritsa ntchito chojambula chowongolera zosefera (onani chithunzi pansipa) malizitsani overcurrent, overvoltage, LC fyuluta.

Kuthekera ndi inductance nthawi zambiri zimawoneka zofananira mudera kuti zitsimikizire kuti dera likuyenda bwino, kupanga fyuluta yotsika ya LC, ndikuletsa phokoso la conduction lomwe limapangidwa ndi burashi ya kaboni.The capacitor makamaka kupondereza nsonga voteji kwaiye ndi kutha mwachisawawa burashi mpweya, ndi capacitor ali ndi ntchito yabwino kusefa.Kuyika kwa capacitor nthawi zambiri kumalumikizidwa ndi waya wapansi.Inductance makamaka imalepheretsa kusintha kwadzidzidzi kwa kusiyana kwaposachedwa pakati pa burashi ya kaboni ndi pepala lamkuwa la commutator, ndipo kukhazikikako kumatha kukulitsa magwiridwe antchito ndi kusefa kwa LC fyuluta.Ma inductors awiri ndi ma capacitor awiri amapanga symmetrical LC filter function.The capacitor makamaka ntchito kuthetsa nsonga voteji opangidwa ndi burashi mpweya, ndipo PTC ntchito kuthetsa zotsatira za kutentha kwambiri ndi mopitirira muyeso mafunde panopa pa dera galimoto.