Isibalo esikumlawuli wethu kagesi siyashintsha ngoba sibonisa i-voltage yangempela.Ngokuvamile, isilawuli sikagesi singazinzisa i-voltage, kodwa kunzima cishe kuzo zonke izilawuli zamandla kagesi zesigaba esisodwa ukugcina amandla kagesi azinzile ezingeni elifanayo ngaso sonke isikhathi.Kufanele kube khona ukulahleka kwamandla phakathi nayo yonke inqubo.Okufana nokushisisa okubangela ukuphelelwa amandla.Nakuba izilawuli zamandla kagesi zabakhiqizi abathile zizohlala zingashintshile, zisethe ezinye izinhlelo zokugcina isibalo singashintshile.