Filogin mai yana nufin na'urar auna matsin lamba ta mai. Ka'idar ita ce lokacin da injin ke aiki, na'urar auna matsin lamba tana gano matsin lamba ta mai, tana mayar da siginar matsin lamba zuwa siginar lantarki, sannan ta aika ta zuwa da'irar sarrafa siginar. Bayan ƙara ƙarfin lantarki da ƙara ƙarfin lantarki, siginar matsin lamba da aka ƙara tana haɗuwa da ma'aunin matsin lamba ta hanyar layin sigina.
Ana nuna matsin lamba na mai na injin ta hanyar rabon halin yanzu tsakanin na'urori biyu a cikin alamar matsin lamba mai canzawa. Bayan ƙara ƙarfin lantarki da ƙara ƙarfin lantarki, ana kwatanta siginar matsin lamba da ƙarfin lantarki na ƙararrawa da aka saita a cikin da'irar ƙararrawa. Lokacin da ƙarfin lantarki na ƙararrawa ya yi ƙasa da ƙarfin lantarki na ƙararrawa, da'irar ƙararrawa tana fitar da siginar ƙararrawa kuma tana kunna fitilar ƙararrawa ta layin ƙararrawa.
Na'urar firikwensin matsin lamba na mai muhimmiyar hanya ce ta gano matsin lamba na injin mota. Ma'aunin yana taimakawa wajen sarrafa yadda injin yake aiki yadda ya kamata.
Filogin mai yana ƙunshe da guntu mai kauri na na'urar firikwensin matsin lamba, da'irar sarrafa sigina, wurin zama, na'urar allon kewaye mai tsayayye da kuma jagorori biyu (layin sigina da layin ƙararrawa). Da'irar sarrafa sigina ta ƙunshi da'irar samar da wutar lantarki, da'irar diyya ta firikwensin, da'irar sifili, da'irar ƙara ƙarfin lantarki, da'irar ƙara ƙarfin lantarki, da'irar ƙara ƙarfin lantarki, da'irar tacewa da kuma da'irar ƙararrawa.
