Lapho uqonda 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 kukonke.Kulesi sihloko, sizohlola ubuhlobo phakathi kwe-ESR nama-capacitors, sigxile ikakhulukazii-ESR MLCCs ephansi(ama-capacitor e-ceramic amaningi).
I-ESR ingachazwa njengokumelana okwenzeka ochungechungeni nge-capacitance ye-capacitor ngenxa yokuziphatha okungalungile kwezakhi ze-capacitor.Kungacatshangwa njengokumelana okuvimbela ukugeleza kwamanje nge-capacitor.I-ESR iyisici esingathandeki ngoba idala ukuthi amandla ahlakazwe njengokushisa, ngaleyo ndlela yehlise ukusebenza kahle kwe-capacitor futhi ithinte ukusebenza kwayo.
Ngakho-ke, imuphi umphumela i-ESR enawo kuma-capacitor?Ake simbe imininingwane.
1. Ukuchithwa kwamandla: Uma okwamanje kugeleza nge-capacitor, amandla alahlekile ngendlela yokushisa ngenxa yokumelana okunikezwa yi-ESR.Lokhu kuchithwa kwamandla kungabangela ukukhuphuka kwezinga lokushisa, okungaba nomthelela omubi ekusebenzeni okuphelele kanye nempilo yesevisi ye-capacitor.Ngakho-ke, ukunciphisa i-ESR kubalulekile ukunciphisa ukulahleka kwamandla nokuqinisekisa ukusebenza kahle kwe-capacitor.
2. I-Voltage Ripple: Kuzinhlelo zokusebenza lapho ama-capacitor esetshenziselwa izinjongo zokuhlunga nokushelela, i-ESR iba ipharamitha ebalulekile.I-ESR ikhiqiza ama-voltage ripples noma ukushintshashintsha lapho i-voltage ku-capacitor ishintsha ngokushesha.Lawa ma-ripples angabangela ukungazinzi kwesekethe kanye nokuhlanekezela, kuthinte ikhwalithi yesiginali yokuphumayo.Ama-capacitor e-ESR aphansi aklanyelwe ngokuqondile ukunciphisa lawa ma-voltage ripples futhi anikeze izintambo zikagesi ezinzile.
3. Isivinini sokushintsha: Ama-Capacitor avame ukusetshenziswa kumasekhethi e-elekthronikhi ahlanganisa imisebenzi yokushintsha ngokushesha.I-ESR ephezulu inganciphisa kakhulu isivinini sokushintshwa kwesekhethi, ibangele ukubambezeleka futhi inciphise ukusebenza kahle.Ama-capacitor e-ESR aphansi, ngakolunye uhlangothi, anikela ngezindleko ezisheshayo zokushaja nokukhipha, okuwenza alungele izinhlelo zokusebenza ezidinga ukushintshwa ngokushesha.
4. Impendulo yemvamisa: I-ESR nayo inomthelela omkhulu ekuphenduleni kwemvamisa ye-capacitor.Yethula i-impedance eshintsha ngokuvama.Ama-capacitor e-ESR aphezulu abonisa ukuthintana okuphezulu kumafrikhwensi aphezulu, akhawulela ukusebenza kwawo ezinhlelweni ezidinga ububanzi obubanzi.Ama-capacitor e-ESR aphansi ane-impedance ephansi phezu kwe-spectrum ebanzi futhi afakazelwa ukuthi asebenza kangcono kulesi simo.
Ukubhekana nezinselele ezibangelwa i-ESR ephezulu,i-ESR MLCCs ephansiziye zanda kakhulu eminyakeni yamuva.Lawa ma-MLCC akhiqizwa kusetshenziswa izinto ezithuthukisiwe nezindlela zokukhiqiza ukuze kuzuzwe amanani aphansi kakhulu e-ESR uma kuqhathaniswa nama-capacitor avamile.Ukusabela kwabo kwemvamisa okuthuthukisiwe, ukusetshenziswa kwamandla okuphansi kanye nokuzinza okuthuthukisiwe kubenza balungele izinhlelo zokusebenza ezihlukahlukene ezihlanganisa amandla kagesi, amasekhethi okuhlunga, ukuhlukanisa kanye nokudlula.
Kafushane, i-ESR iyipharamitha eyinhloko ethinta ukusebenza kwe-capacitor.Inquma ukuchithwa kwamandla e-capacitor, i-voltage ripple, isivinini sokushintsha, kanye nokuphendula kwamafrikhwensi.Ama-ESR MLCC aphansi avele njengesixazululo sokunciphisa izinselele ezihambisana ne-ESR ephezulu, ehlinzeka ngokusebenza okuphumelelayo nokuthembekile kwezinhlobonhlobo zemishini namasekethe kagesi.
Isikhathi sokuthumela: Sep-27-2023