Lapho ama-capacitors okuqonda, enye yamapharamitha abalulekile okufanele acatshangelwe yi-ESR (ukumelana kochungechunge okulinganayo). I-ESR isici esingokwemvelo sawo wonke ama-capacitors futhi idlala indima ebalulekile ekunqumeni ukusebenza kwawo jikelele. Kulesi sihloko, sizohlola ubudlelwano phakathi kwe-ESR nama-capacitors, sigxile ngqoI-LOW-ESR MLCCS(ama-capacitor we-multilayer ceramic).
I-ESR ingachazwa njengokumelana okwenzeka ochungechungeni ngokukhonkotha kwe-capacitor ngenxa yokuziphatha okungeke okuhleliwe kwezinto ze-capacitor. Kungaba umcabango njengoba ukumelana okukhawulela ukugeleza kwamanje nge-capacitor. I-ESR yisimo esingathandeki ngoba ibangela ukuba amandla ahlakazeke njengokushisa, ngaleyo ndlela anciphise ukusebenza kahle kwe-capacitor futhi athinte ukusebenza kwawo.
Ngakho-ke, i-ESR ibe naliphi ithonya kuma-capacitors? Ake sigaye imininingwane.
1. Ukuqedwa kwamandla: Lapho ukugeleza kwamanje nge-capacitor, amandla alahlekile ngendlela yokushisa ngenxa yokumelana okunikezwe yi-ESR. Lokhu kuhlukaniswa kwamandla kungadala ukukhuphuka kwamazinga okushisa, okungathinta kabi ukusebenza okuphelele kanye nempilo yenkonzo ye-capacitor. Ngakho-ke, ukunciphisa i-ESR kubalulekile ukunciphisa ukulahleka kwamandla futhi kuqinisekiswe ukusebenza kahle kwe-capacitor.
2. I-voltage ripple: Kuhlelo lokusebenza lapho ama-capacitors esetshenziselwa ukuhlunga nezinhloso ezibushelelezi, i-ESR iba yipharamitha ebucayi. I-ESR ikhiqiza ama-voltage ripples noma ukuguquguquka lapho i-voltage kuyo yonke i-capacitor ishintsha ngokushesha. Lezi zimbambo zingadala ukungazinzi kwesekethe nokuhlanekezela, okuthinta ikhwalithi yesiginali yokuphuma. Ama-capacitor aphansi e-ESR aklanyelwe ngokukhethekile ukunciphisa la ma-voltage ripples futhi ahlinzeke ngemigqa yamandla azinzile.
I-3. Ijubane lokushintsha: Ama-capacitors ajwayele ukusetshenziswa emibuthanweni ye-elekthronikhi ebandakanya ukusebenza okusheshayo kokushintsha. I-ESR ephezulu inganciphisa kakhulu isivinini sokushintsha isijikelezo, okwenza ukubambezeleka futhi kunciphise ukusebenza kahle kokusebenza. Ngakolunye uhlangothi, ama-capacitors aphansi e-ESR, anikela ngokusheshe ukushaja kanye namazinga okuphuma, abenze balungele izinhlelo zokusebenza ezidinga ukushintshwa okusheshayo.
4. Impendulo yemvamisa: I-ESR nayo inomthelela omkhulu ekuphenduleni imvamisa ye-capacitor. Kwethulwa ukungcola okushintsha ngokuvama. Ama-capacitor aphezulu e-ESR akhombisa ukubulawa okuphezulu ngamaza aphezulu, kunciphisa ukusebenza kwawo kuzinhlelo zokusebenza ezidinga ibanga lemvamisa elibanzi. Ama-capacitors aphansi e-ESR anokuphazamiseka okuphansi ngaphezulu kwemvamisa imvamisa ebanzi futhi kufakazelwa ukuthi kuphumelele kakhudlwana kulesi simo.
Ukubhekana nezinselelo ezibangelwe yi-ESR ephezulu,I-LOW-ESR MLCCSsekuya ngokuya kuthandwa eminyakeni yamuva. Lawa ma-MLCCs akhiqizwa esebenzisa izinto ezithuthukile kanye namasu okukhiqiza ukufezekisa kakhulu amanani e-ESR aphansi ngokuqhathaniswa nama-capacitor ajwayelekile. Ukuphendula kwabo okungcono kakhulu, ukusetshenziswa kwamandla okuphansi kanye nokuqina okuthuthukile kubenza balungele izinhlelo ezahlukahlukene ezibandakanya izinto zamandla, ukuhlunga amasekethe, ukuqothuka kanye nokudlula.
Ngamafuphi, i-ESR ipharamitha esemqoka ethinta ukusebenza kweCapacitor. Inquma ukuhlukaniswa kwamandla kaCapacitor, i-voltage ripple, isivinini sokushintsha, nokuphendula imvamisa. Ama-ESR MLCC asezingeni eliphansi aqhamuke njengesixazululo sokunciphisa izinselelo ezihambisana ne-ESR ephezulu, enikeza ukusebenza okusebenzayo nokuthembekile kwamadivayisi we-elekthronikhi ahlukahlukene.
Isikhathi sePosi: Sep-27-2023