Babban amfani na yau da kullun na masu gyara siliki mai sarrafa shi shine gyare-gyaren sarrafawa. Wurin gyara da aka sani shine da’irar gyara da ba za a iya sarrafawa ba. Idan an maye gurbin diode da mai gyara siliki mai sarrafawa, ana iya samar da da’irar gyara mai sarrafawa. Ɗaya daga cikin mafi sauƙi-ɗaya-lokaci ɗaya mai iya sarrafa da’irar gyarawa. A lokacin ingantaccen zagayowar rabin madaurin wutar lantarki ta sinusoidal AC u2, idan wutar lantarki ta VS bata shigar da bugun bugun jini ug ba, har yanzu ba za a iya kunna VS ba. Sai kawai lokacin da u2 ke cikin madaidaiciyar rabin zagayowar kuma ana amfani da bugun bugun bugun jini ug akan na’urar sarrafawa, ana kunna thyristor don kunna . Idan ug ya zo da wuri, thyristor zai kunna da wuri; idan ug ya zo a makare, thyristor zai kunna a makare. Ta hanyar canza lokacin isowar bugun bugun jini ug a kan sandar sarrafawa, ana iya daidaita matsakaicin ƙimar ul na ƙarfin fitarwa akan kaya. A cikin fasaha, rabin zagayowar alternating current ana saita shi azaman 180°, wanda ake kira kusurwar lantarki. Ta wannan hanyar, a cikin kowane madaidaiciyar rabin sake zagayowar u2, kusurwar lantarki da aka samu daga ƙimar sifili zuwa lokacin bugun bugun bugun jini ana kiranta kusurwar sarrafawa α; kusurwar lantarki wanda thyristor ke gudanarwa a cikin kowane rabin zagayowar tabbatacce ana kiransa angle conduction θ. Babu shakka, ana amfani da duka α da θ don nuna sarrafawa ko toshe kewayon thyristor yayin rabin zagayowar wutar lantarki ta gaba. Ta hanyar canza kusurwar sarrafawa α ko kusurwar gudanarwa θ, matsakaicin darajar ul na ƙarfin bugun jini na DC akan kaya yana canzawa, kuma ana samun gyara mai sarrafawa. A cikin da’irar gyara gada, diodes guda biyu ne kawai ake buƙatar maye gurbinsu da na’urorin gyaran gyare-gyaren silicon don samar da da’irar gyara mai cikakken igiyar ruwa.