Xa siqonda ii-capacitors, enye yeeparameter ezibalulekileyo ekufuneka ziqwalaselwe yi-ESR (ukumelana nochungechunge olulinganayo). I-ESR luphawu oluqhelekileyo lwazo zonke ii-capacitors kwaye idlala indima ebalulekileyo ekumiseleni ukusebenza kwazo ngokubanzi. Kweli nqaku, siza kuphonononga ubudlelwane phakathi kwe-ESR kunye nee-capacitors, sigxile ngokukodwa kwiii-MLCC eziphantsi kwe-ESR(ii-capacitor zeseramikhi ezineengqimba ezininzi).
I-ESR ingachazwa njengokumelana okwenzeka ngokulandelelana kunye nomthamo we-capacitor ngenxa yokuziphatha okungafanelekanga kwezinto ze-capacitor. Ingacingelwa njengokumelana okuthintela ukuhamba kombane nge-capacitor. I-ESR luphawu olungafunekiyo kuba ibangela ukuba amandla atshabalale njengobushushu, ngaloo ndlela inciphisa ukusebenza kakuhle kwe-capacitor kwaye ichaphazele ukusebenza kwayo.
Ngoko ke, yintoni impembelelo ye-ESR kwii-capacitors? Makhe sijonge iinkcukacha.
1. Ukusasazwa kwamandla: Xa umbane udlula kwi-capacitor, amandla ayalahleka ngohlobo lobushushu ngenxa yokumelana okunikezelwa yi-ESR. Oku kusasazwa kwamandla kunokubangela ukunyuka kobushushu, okunokuchaphazela kakubi ukusebenza kunye nobomi benkonzo ye-capacitor. Ke ngoko, ukunciphisa i-ESR kubalulekile ukunciphisa ukulahleka kwamandla kunye nokuqinisekisa ukusebenza kakuhle kwe-capacitor.
2. I-Voltage Ripple: Kwizicelo apho ii-capacitors zisetyenziselwa ukucoca kunye nokuthambisa, i-ESR iba yiparameter ebalulekileyo. I-ESR ivelisa ii-voltage ripples okanye ukuguquguquka xa i-voltage kwi-capacitor itshintsha ngokukhawuleza. Ezi ripples zinokubangela ukungazinzi kwesekethe kunye nokuphazamiseka, okuchaphazela umgangatho wesignali yokuphuma. Ii-capacitors ze-ESR eziphantsi zenzelwe ngokukodwa ukunciphisa ezi ripples ze-voltage kunye nokubonelela ngemigca yamandla ezinzileyo.
3. Isantya sokutshintsha: Ii-capacitors zihlala zisetyenziswa kwiisekethe ze-elektroniki ezibandakanya imisebenzi yokutshintsha ngokukhawuleza. I-ESR ephezulu inokucothisa kakhulu isantya sokutshintsha kwesekethe, ibangele ukulibaziseka kunye nokunciphisa ukusebenza kakuhle. Ii-capacitors ze-ESR eziphantsi, kwelinye icala, zibonelela ngamazinga okutshaja kunye nokukhupha ngokukhawuleza, nto leyo ezenza zilungele usetyenziso olufuna ukutshintsha ngokukhawuleza.
4. Impendulo yefrikhwensi: I-ESR ikwanefuthe elikhulu kwimpendulo yefrikhwensi ye-capacitor. Ingenisa i-impedance etshintsha rhoqo. Ii-capacitor ze-ESR eziphezulu zibonisa i-impedance ephezulu kwiifrikhwensi eziphezulu, nto leyo ethintela ukusebenza kwazo kwizicelo ezifuna uluhlu olubanzi lweefrikhwensi. Ii-capacitor ze-ESR eziphantsi zine-impedance ephantsi kwi-wide frequency spectrum kwaye zingqineke zisebenza ngakumbi kule meko.
Ukujongana nemingeni ebangelwa yi-ESR ephezulu,ii-MLCC eziphantsi kwe-ESRziye zathandwa kakhulu kwiminyaka yakutshanje. Ezi MLCC zenziwe kusetyenziswa izixhobo eziphambili kunye neendlela zokwenza ukuze kufezekiswe amaxabiso aphantsi kakhulu e-ESR xa kuthelekiswa nee-capacitors eziqhelekileyo. Impendulo yazo ephuculweyo yefrikhwensi, ukusetyenziswa kwamandla okuphantsi kunye nozinzo oluphuculweyo kuzenza zilungele ukusetyenziswa ngeendlela ezahlukeneyo kubandakanya izixhobo zamandla, iisekethe zokucoca, ukuqhawula kunye nokudlula.
Ngamafutshane, i-ESR yiparameter ephambili echaphazela ukusebenza kwe-capacitor. Imisela ukuchithwa kwamandla kwe-capacitor, i-voltage ripple, isantya sokutshintsha, kunye nempendulo ye-frequency. Ii-MLCC ze-ESR eziphantsi ziye zavela njengesisombululo sokunciphisa imingeni enxulumene ne-ESR ephezulu, zibonelela ngokusebenza okusebenzayo nokuthembekileyo kwezixhobo ezahlukeneyo ze-elektroniki kunye neesekethe.
Ixesha lokuthumela: Sep-27-2023