I-Electrolytic Capacitors Isizathu Esiyinhloko Sempilo Efushane Yezibani ze-LED
Kuvame ukuzwa ukuthi ukuphila okufushane kwezibani ze-LED ngokuyinhloko kubangelwa ukuphila okufushane kokunikezwa kwamandla, futhi ukuphila okufushane kokunikezwa kwamandla kungenxa yokuphila okufushane kwe-electrolytic capacitor. Lezi zimangalo zibuye zibe nomqondo othile. Ngenxa yokuthi imakethe igcwele inani elikhulu lama-electrolytic capacitor ahlala isikhathi esifushane futhi aphansi, okuhambisana neqiniso lokuthi manje alwa nentengo, abanye abakhiqizi basebenzisa lawa ma-electrolytic capacitor angaphansi kwesikhathi esifushane kungakhathaliseki izinga.
Okokuqala, impilo ye-electrolytic capacitor incike ekushiseni okuzungezile.
Ichazwa kanjani impilo ye-electrolytic capacitor? Yiqiniso, kuchazwa ngamahora. Kodwa-ke, uma inkomba yokuphila ye-electrolytic capacitor ingamahora angu-1 000, akusho ukuthi i-electrolytic capacitor iphukile ngemva kwamahora ayinkulungwane, cha, kodwa kuphela ukuthi amandla e-electrolytic capacitor ancishiswa ngesigamu ngemva kwamahora angu-1,000, okwakukhona. ekuqaleni 20uF. Manje isiyi-10uF kuphela.
Ngaphezu kwalokho, inkomba yokuphila ye-electrolytic capacitors nayo inesici okufanele kushiwo ukuthi mangaki amadigri okuphila okushisa kwendawo yokusebenza. Futhi ngokuvamile icaciswa njengempilo ekuzinga lokushisa kwe-ambient engu-105 ° C.
Lokhu kungenxa yokuthi ama-electrolytic capacitor esivame ukuwasebenzisa namuhla angama-electrolytic capacitor asebenzisa i-electrolyte ewuketshezi. Yiqiniso, uma i-electrolyte yomile, i-capacitance izobe ingasekho. Uma izinga lokushisa liphakeme, i-electrolyte ihwamuka kalula. Ngakho-ke, inkomba yokuphila ye-electrolytic capacitor kufanele ibonise impilo ngaphansi kwaliphi izinga lokushisa elizungezile.
Ngakho-ke wonke ama-electrolytic capacitor okwamanje amakwe ku-105 ° C. Isibonelo, i-electrolytic capacitor evamile inesikhathi sokuphila samahora angu-1,000 kuphela ku-105 ° C. Kodwa uma ucabanga ukuthi ukuphila kwawo wonke ama-electrolytic capacitor amahora angu-1,000 kuphela. Lokho kungaba okungalungile kakhulu.
Kalula nje, uma izinga lokushisa elizungezile lingaphezu kuka-105 ° C, ukuphila kwalo kuyoba ngaphansi kwamahora angu-1,000, futhi uma izinga lokushisa elizungezile lingaphansi kuka-105 ° C, ukuphila kwalo kuyoba isikhathi eside kunamahora angu-1,000. Ngakho-ke ingabe kukhona ubudlelwano obunzima bokulinganisa phakathi kokuphila nezinga lokushisa? Yebo!
Obunye bobudlelwano obulula futhi obulula ukubala ukuthi kukho konke ukukhuphuka kwezinga lokushisa elingu-10, ubude bempilo buncishiswa ngesigamu; ngokuphambene, kukho konke ukwehla kwezinga lokushisa elingu-10 degree, isikhathi sokuphila siphindwe kabili. Yebo lokhu kuwukulinganisa nje okulula, kodwa futhi kunembile impela.
Ngenxa yokuthi ama-electrolytic capacitor asetshenziselwa amandla okushayela e-LED abekwe nakanjani ngaphakathi kwendlu yesibani se-LED, sidinga kuphela ukwazi izinga lokushisa ngaphakathi kwesibani se-LED ukuze sazi impilo yokusebenza ye-electrolytic capacitor.
Ngoba kumalambu amaningi ama-LED kanye nama-electrolytic capacitor abekwe endaweni efanayo, izinga lokushisa lemvelo lalokhu okubili limane lifana. Futhi lokhu kushisa kwe-ambient kunqunywa ngokuyinhloko ibhalansi yokushisisa nokupholisa ye-LED kanye nokunikezwa kwamandla. Futhi izimo zokushisa nokupholisa zesibani ngasinye se-LED zihlukile.
Indlela yokwelula impilo ye-electrolytic capacitor
① Yelula impilo yayo ngokuklama
Eqinisweni, indlela yokwandisa impilo ye-electrolytic capacitors ilula kakhulu, ngoba ukuphela kwayo kokuphila kubangelwa ikakhulukazi ukuhwamuka kwe-electrolyte ewuketshezi. Uma uphawu lwayo luthuthukisiwe futhi lungavunyelwe ukuhwamuka, impilo yalo izokwelulwa ngokwemvelo.
Ngaphezu kwalokho, ngokwamukela ikhava yepulasitiki ye-phenolic ene-electrode ezungezile iyonke, kanye ne-gasket ekhethekile kabili ehlanganiswe ngokuqinile negobolondo le-aluminium, ukulahlekelwa kwe-electrolyte nakho kungancishiswa kakhulu.
② Yelula impilo yayo kusukela ekusetshenzisweni
Ukunciphisa i-ripple current nakho kunganweba impilo yayo yesevisi. Uma i-ripple current inkulu kakhulu, ingancishiswa ngokusebenzisa ama-capacitor amabili ngokuhambisana.
Ukuvikela ama-electrolytic capacitors
Ngezinye izikhathi ngisho noma i-electrolytic capacitor yesikhathi eside isetshenziswa, kuvame ukutholakala ukuthi i-electrolytic capacitor iphukile. Siyini isizathu salokhu? Eqinisweni, akulungile ukucabanga ukuthi izinga le-electrolytic capacitor ayanele.
Ngoba siyazi ukuthi kugridi yamandla e-AC yamandla edolobha, kuvame ukuba nokuphakama kwamandla kagesi aphezulu ngokushesha ngenxa yombani. Nakuba kuye kwasetshenziswa izindlela eziningi zokuvikela umbani ekushayweni kombani kumagridi amakhulu kagesi, kusengenakugwemeka ukuthi kuzoba nokuvuza kwenetha kubahlali Ekhaya.
Ezibani ze-LED, uma zinikwe amandla ama-mains, kufanele wengeze izinyathelo zokulwa nokuvuvukala kumatheminali okufaka ama-mains ekunikezeni amandla okukhanya, okuhlanganisa ama-fuse nama-resistors okuvikela u-overvoltage, okuvame ukubizwa ngokuthi ama-varistors. Vikela izingxenye ezilandelayo, ngaphandle kwalokho ama-electrolytic capacitor esikhathi eside azobhobozwa yi-voltage yokuqhuma.