Mai ba da amsa naúrar yana tunatar da ku cewa kowane mai sauya mitar yana da naúrar birki (ƙananan wutar lantarki shine birki resistor, babban ƙarfi shine babban transistor GTR da kewayen tuƙi), ƙarancin wuta yana cikin ciki, kuma babban ƙarfin yana waje. Ƙa'idar naúrar birki: Lokacin da injin aiki yana buƙatar birki cikin sauri, kuma a cikin lokacin da ake buƙata, ba za a iya adana ƙarfin sake haɓakawa na mai sauya mitar a cikin matsakaicin matsakaicin ƙarfin lantarki a cikin kewayon ƙarfin lantarki da aka kayyade ba ko kuma mai birki na ciki ba zai iya cinye shi cikin lokaci ba, yana haifar da wuce gona da iri a ɓangaren DC, ana buƙatar ƙara wani ɓangaren birki na waje don haɓaka amfani da makamashin wutar lantarki. Lokacin da mai sauya mitar ya motsa motar ta kasance cikin yanayin birki (yanayin samar da wutar lantarki), kamar lokacin da hawan ya sauko ko lokacin da kaya mai tsayin daka ya tsaya da sauri. Kinetic makamashi (mai yiwuwa makamashi) za a mayar da shi zuwa wutar lantarki da kuma komawa zuwa DC bas na mitar Converter, haifar da wani babban bas ƙarfin lantarki. Idan mai sauya mitar ku yana da na'urar birki, lokacin da ya gano cewa wutar lantarkin bas ɗin yana sama da wani kofa, zai haɗa maɓalli tsakanin na'urar birki da bas ɗin, kuma makamashi zai ci ta hanyar birki resistor. A wannan lokacin, resistor birki zai yi zafi.
A al'ada, resistor birki baya haifar da zafi. Idan birki yana haifar da zafi yayin aiki na yau da kullun, yana nufin cewa sashin birkin ya karye ko kuma an sami matsala ta hardware wanda ke sa a koda yaushe a haɗa na'urar birkin zuwa bas ɗin DC. Don haka, aikin mai sauya mitar ku ba babbar matsala ba ce, amma amfani da makamashin yana da yawa.
Lokacin da fitarwa na mitar mai canzawa ke sarrafa motar a cikin hanzari ko yanayin gudu akai-akai, resistor ba ya aiki. Koyaya, lokacin da motar ta ɓace ko ta tsaya cikin gaggawa, saboda yanayin haɓakar birki na motar, ƙarfin wutar lantarki na da'irar DC a cikin injin mitar zai ƙaru, kuma resistor na birki zai cinye wannan ƙarin kuzari ta hanyar dumama.
Motar asynchronous zai kasance a cikin yanayin samar da wutar lantarki, yana samar da ra'ayi na yanzu. Wannan halin yanzu yana komawa da'irar DC ta hanyar diodes reflux (D1-D6) kuma yana cajin babban capacitor, yana haifar da ƙarfin wutar lantarki na DC. Don gujewa babban ƙarfin lantarki da lalacewa ga mai sauya mitar, ana haɗa resistor R zuwa gefen kewaye na DC. Lokacin da ƙarfin wutar lantarki na DC ya wuce wani ƙima, ana kunna transistor switch TR kuma an haɗa shi da resistor birking, kuma ana amfani da makamashin amsawa a cikin nau'in makamashin thermal akan resistor R.
Yayin aiwatar da rage mitar aiki, motar birki ta kasance cikin yanayin birki mai sabuntawa, kuma makamashin motsa jiki na tsarin tuki za a dawo da shi zuwa da'irar DC, wanda hakan zai sa wutar lantarki ta DC UD ta ci gaba da tashi har ma ta kai wani matsayi mai hatsari. Sabili da haka, ya zama dole a cinye makamashin da aka sake farfadowa a cikin da'irar DC don kiyaye UD cikin kewayon da aka yarda. Ana amfani da resistor na birki don cinye wannan makamashi. Naúrar birki ta ƙunshi babban transistor GTR da kewayar tuƙi. Ayyukansa shine samar da hanya don fitar da IB na yanzu don gudana ta hanyar birki resistor.