Ekwakhiweni kwemishini ye-elekthronikhi, ukukhethwa kwama-capacitors okuphepha kubalulekile, ikakhulukazi kufanele kukhokhwe izindlela zazo zokwehluleka kanye nezinqubomgomo ze-voltage zimelana nezinkomba.Imodi yokuhluleka okuvame kakhulu yama-capacitos ezokuphepha ukuhluleka okuphansi kwamandla kagesi, okuhlobene eduze nomugqa wokuphepha ekwakhiweni kwawo.Ngokombono wokuphepha, abaqambi bavame ukukala ukukhetha ama-capacitors anomugqa omkhulu wokuphepha ethembeni lokuthi ukudishaka kwemiklamo ngeke kuholele ekuhlulekeni kweCapacitor.Kodwa-ke, le ndlela ingaba namaphutha.
Izimpawu eziphambili zokuhluleka kwamandla kagesi eziphansi zifaka: I-voltage yangempela esetshenzisiwe iphansi kakhulu kunenani elilinganiselwe le-volaji inani le-capacitor, ngokuvamile akukho ngaphezu kwe-10% yenani elikalwe;I-capacitor ithambekele ekwehlulekeni ngemuva kokuhlolwa okushisayo nokunomswakama noma ukuncipha komswakama;ICapacitor ithambekele ekwehlulekeni ngemuva kokuhlolwa okushisa okuphezulu noma ukubhaka kwebhodi lesekethe.I-capacitor izobe isibuyela kokujwayelekile;Ukusebenza kweCapacitor kuzobuye kubuyele emuva kokuthi i-capacitor isuswe ebhodini lesekethe kanye ne-voltage ephakeme kune-voltage evamile yokusebenza iyasetshenziswa.Lezi zimo zikhombisa ukuthi ukwehluleka kwamandla kagesi aphansi kwe-capacitors yezokuphepha kuyinkinga efanele ukunakwa.
Isizathu sokwehluleka kwamandla kagesi aphansi ukuthi eliphakathi nendawo e-capacitor yezokuphepha lifakwe yi-casing, futhi lezi zikhuthalo azivaliwe ngokuphelele, ngaleyo ndlela zinikeze ithuba lokungena komswakama.Isibonelo, i-capacitor yezokuphepha ene-aptandle ye-50v, lapho ivotashi ye-5V isetshenziswa kuwo womabili ama-Exs, umswakama omaphethelweni aphakathi nendawo avuza isiteshi samanje.Ngenxa yamandla kagesi aphansi, okukhona okuvuzayo akukukhulu futhi amanzi awakwazi ukuhwamuka, ngaleyo ndlela achithe izici zokugcina amandla ze-capacitor.Kodwa-ke, emazingeni okushisa aphezulu noma lapho kufakwa khona ama-voltage
Ngakho-ke, lapho ukhetha ama-capacitors ezokuphepha, inkomba ye-volatage ye-volage akufanele ibekwe phezulu kakhulu.Leli iphuzu eliyisihluthulelo elithambekele ezinkingeni ekukhetheni.Ama-capacitor ezokuphepha asetshenziswa kabanzi emikhiqizweni ehlukahlukene kagesi, futhi ikhwalithi yomkhiqizo yawo ithinta ngqo ikhwalithi yethu yempilo nokuphepha.Lapho ukhetha ama-capacitors okuphepha, kufanele ubeke kuqala imikhiqizo yangempela evela efektri yasekuqaleni futhi uqinisekise ukuthi anezitifiketi zokuphepha ezivela emazweni ahlukahlukene ukuqinisekisa ikhwalithi nokuphepha kwawo.