"PFC" shine taƙaitaccen "Power Factor Correction", yana nufin daidaitawa ta hanyar tsarin kewayawa, gabaɗaya inganta ƙarfin wutar lantarki a cikin kewaye, rage ƙarfin amsawa a cikin da'irar, da inganta tasirin canjin wutar lantarki.A taƙaice, yin amfani da da'irar PFC na iya adana ƙarin ƙarfi.Ana amfani da da'irar PFC don nau'ikan wutar lantarki a cikin samfuran wuta ko na'urorin lantarki.