REB 05C Series Spring da aka yi amfani da birki na EM

An haɗa mashin ɗin motar zuwa cibiyar murabba'i (cibiyar spline).Lokacin da aka kashe wutar lantarki, na'urar lantarki na lantarki ba ta da iko, ƙarfin da ruwan bazara ya haifar yana aiki a kan armature don matsa rotor, wanda ke juyawa ta cikin murabba'in cibiya (cibiyar spline), tam tsakanin armature da farantin murfin, don haka yana haifar da karfin juyi na birki.A wannan lokacin, an ƙirƙiri ratar iska tsakanin armature da stator.
Lokacin da birki yana buƙatar sassautawa, ana haɗa na'urar lantarki zuwa wutar lantarki ta DC, kuma filin maganadisu yana jan hankalin ƙwanƙwasa don matsawa zuwa stator, kuma armature yana matsa ruwan bazara idan ya motsa, a lokacin ne aka saki rotor kuma birki ya saki.