Yayin da samfuran abokin ciniki suka zama mafi girma kuma suna da ƙarfi, masu tuntuɓar, masu dacewa don sarrafa babban iko, ana amfani da su azaman na'urori masu sauya kaya don kayan aikin lantarki daban-daban waɗanda ke buƙatar babban halin yanzu da ƙarfin lantarki.
Koyaya, tare da karuwar buƙatun ƙanƙanta, nauyi, da ƙananan kayan aiki, yanayin maye gurbin manyan masu tuntuɓar masu tuntuɓar juna tare da ƙanana, babban ƙarfin bugu (PCB) relays masu iya katse babban halin yanzu da ƙarfin lantarki a zahiri yana kan haɓaka.
Bugu da ƙari kuma, wasu abokan ciniki, suna tsammanin karuwar buƙatu na gaba da ƙara yawan samar da kayayyaki, suna amfani da relays na PCB don rage farashi ta hanyar haɗa na'urori masu sauya kaya a kan allon da'irar da aka buga, a matsayin ma'auni guda don yanke lokacin samarwa.
Mafi wahalan matsala ta tunani don shawo kan maye gurbin masu tuntuɓar masu tuntuɓar PCB shine mahimman gyare-gyaren ƙira da ake buƙata don maye gurbin wayar da kebul na gargajiya tare da "allon allo{0}}.
Relay na PCB shine na'urar sarrafa lantarki da aka haɗa akan allon da'ira da aka buga. Ta hanyar haɗa gudun ba da sanda tare da allon kewayawa, ana samun ƙaƙƙarfan shimfidar da'ira mai ma'ana. Babban aikinsa shine sarrafa babban halin yanzu tare da ƙarancin halin yanzu, yana mai da shi dacewa don daidaitawa ta atomatik, kariyar aminci, da aikace-aikacen sauya kewaye.
