Uma siqonda ama-capacitor, enye yemingcele ebalulekile okufanele icatshangelwe yi-ESR (ukumelana nochungechunge olulinganayo). I-ESR iyisici esingokwemvelo sawo wonke ama-capacitor futhi idlala indima ebalulekile ekunqumeni ukusebenza kwawo jikelele. Kulesi sihloko, sizohlola ubudlelwano phakathi kwe-ESR nama-capacitor, sigxile kakhulu ku-ama-MLCC aphansi e-ESR(ama-capacitor e-ceramic anezingqimba eziningi).
I-ESR ingachazwa njengokumelana okwenzeka ngokulandelana nge-capacitance ye-capacitor ngenxa yokuziphatha okungekuhle kwezinto ze-capacitor. Kungacatshangwa njengokumelana okunciphisa ukugeleza kwamandla kagesi nge-capacitor. I-ESR iyisici esingathandeki ngoba ibangela ukuthi amandla ahlakazeke njengokushisa, ngaleyo ndlela kuncishiswe ukusebenza kahle kwe-capacitor futhi kuthinte ukusebenza kwayo.
Ngakho-ke, i-ESR inamuphi umphumela kuma-capacitor? Ake sibheke imininingwane.
1. Ukushabalalisa Amandla: Uma ugesi ugeleza nge-capacitor, amandla alahleka ngesimo sokushisa ngenxa yokumelana okunikezwa yi-ESR. Lokhu kushabalalisa kwamandla kungabangela ukwanda kwezinga lokushisa, okungathinta kabi ukusebenza kanye nokuphila kwenkonzo ye-capacitor. Ngakho-ke, ukunciphisa i-ESR kubalulekile ukunciphisa ukulahleka kwamandla nokuqinisekisa ukusebenza kahle kwe-capacitor.
2. Ukugobhoza Kwe-Voltage: Ezinhlelweni lapho ama-capacitor esetshenziselwa ukuhlunga nokwenza kube bushelelezi, i-ESR iba yipharamitha ebalulekile. I-ESR ikhiqiza ama-voltage ripple noma ukuguquguquka lapho i-voltage kuyo yonke i-capacitor ishintsha ngokushesha. La ma-ripple angabangela ukungazinzi kwesekethe kanye nokuphambuka, okuthinta ikhwalithi yesiginali yokukhipha. Ama-capacitor e-ESR aphansi aklanyelwe ngqo ukunciphisa la ma-voltage ripple futhi anikeze imigqa yamandla ezinzile.
3. Isivinini sokushintsha: Ama-capacitor avame ukusetshenziswa kumasekethe kagesi ahilela imisebenzi yokushintsha okusheshayo. I-ESR ephezulu inganciphisa kakhulu isivinini sokushintsha kwesekethe, okubangela ukubambezeleka nokunciphisa ukusebenza kahle. Ama-capacitor e-ESR aphansi, ngakolunye uhlangothi, anikeza amazinga okushaja nokukhipha okusheshayo, okwenza afaneleke kakhulu ezinhlelweni zokusebenza ezidinga ukushintsha okusheshayo.
4. Impendulo yemvamisa: I-ESR nayo inomthelela omkhulu empendulweni yemvamisa ye-capacitor. Yethula impedance eshintsha ngemvamisa. Ama-capacitor e-ESR aphezulu abonisa impedance ephezulu kuma-frequency aphezulu, okunciphisa ukusebenza kwawo ezinhlelweni ezidinga ububanzi bemvamisa ebanzi. Ama-capacitor e-ESR aphansi ane-impedance ephansi ku-wide frequency spectrum futhi afakazelwe ukuthi asebenza kangcono kulesi simo.
Ukuze kuxazululwe izinselele ezibangelwa yi-ESR ephezulu,ama-MLCC aphansi e-ESRziye zathandwa kakhulu eminyakeni yamuva nje. Lawa ma-MLCC akhiqizwa kusetshenziswa izinto ezithuthukisiwe kanye namasu okukhiqiza ukuze kufezwe amanani e-ESR aphansi kakhulu uma kuqhathaniswa nama-capacitor avamile. Impendulo yawo yemvamisa ethuthukisiwe, ukusetshenziswa kwamandla okuphansi kanye nokuqina okuthuthukisiwe kuwenza afaneleke kakhulu ezinhlelweni ezahlukahlukene okuhlanganisa izinsiza zikagesi, amasekethe okuhlunga, ukuhlukanisa kanye nokweqa.
Ngamafuphi, i-ESR iyipharamitha ebalulekile ethinta ukusebenza kwe-capacitor. Inquma ukushabalaliswa kwamandla kwe-capacitor, i-voltage ripple, isivinini sokushintsha, kanye nempendulo yemvamisa. Ama-MLCC e-ESR aphansi avele njengesixazululo sokunciphisa izinselele ezihambisana ne-ESR ephezulu, enikeza ukusebenza okusebenzayo nokuthembekile kwamadivayisi ahlukahlukene kagesi kanye namasekethe.
Isikhathi sokuthunyelwe: Septhemba-27-2023