Bambance-bambancen daban-daban na babban Copper & ƙananan abubuwan abun ciki na nickel tare da ƙayyadaddun juriya ko ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun zafin jiki na juriya. Mallakar babban juriya ga iskar shaka da lalata sinadarai, ana amfani da waɗannan allunan don madaidaicin juzu'i na waya-rauni, potentiometers, na'urorin sarrafa ƙara, iska mai nauyi na masana'antu rheostats da juriya na injin lantarki. Ana amfani da bambance-bambancen daban-daban don dumama igiyoyi tare da ƙananan yanayin zafi da kuma matsayin walda a cikin "na'urorin walda na lantarki".Copper manganese gamiana amfani da madaidaicin abu don daidaito, ma'auni da shunt resistors.