Ib lub capacitor yog ib qho khoom siv hluav taws xob uas tso cai rau koj los sib sau ua ke thiab muab tawm hluav taws xob tawm. Lub ntsiab yam ntxwv ntawm lub ntsiab yog nws lub peev xwm, uas txiav txim siab qhov dependence ntawm tus nqi ntawm voltage.
Kev faib tawm ntawm cov capacitors
Txoj kev sib txawv rau kev tsim cov cuab yeej tso cai rau kev tsim cov khoom siv sib txawv. Cua capacitors yog cov khoom uas lub dielectric yog cua. Qhov zoo ntawm cov khoom siv no yog qhov yooj yim ntawm kev tsim khoom. Lawv yog npaj rau cov neeg kho tshuab kev tswj ntawm lub peev xwm thiab yog tsim los rau mechanical tas li influences. Qhov tsis zoo ntawm cov khoom siv no suav nrog kev tsis ruaj khov, tsis muaj kev ntseeg siab, kev vam khom ntawm cov av noo thiab qhov kub thiab txias ntawm ib puag ncig, qhov loj me, tsis tshua muaj hluav taws xob muaj zog, uas yog txwv los ntawm kev tawg ntawm huab cua platinum, thiab qis capacitance.
Muaj cov ntawv hom capacitors nyob rau hauv uas daim ntawv impregnated nrog transformer roj ua raws li ib tug dielectric. Cov khoom siv no muaj qhov siabkev ntseeg tau thiab hluav taws xob muaj zog. Ntawm qhov hluav taws xob siab, lawv muaj qhov muaj peev xwm loj thiab tsis tshua muaj tam sim no to.
Ntau lub capacitor rau cov chaw tsim hluav taws xob yog tsim raws li daim ntawv hauv paus ntsiab lus. Txhawm rau ua qhov no, ob daim hlau muab tso ua ke, nruab nrab ntawm daim ntawv twg yog muab tso rau. Tom qab ntawd cov cuab yeej yog dov thiab muab tso rau hauv ib lub hub, uas yog ntim nrog cov roj transformer, thiab ces kaw. Qhov tsis zoo ntawm cov cuab yeej suav nrog hnyav hnyav, siab tus kheej inductance thiab tsis kam.
Electrolytic hom capacitors muaj ib tug dielectric, nthuav tawm nyob rau hauv daim ntawv ntawm oxide txheej uas tshwm nyob rau saum npoo ntawm lub active hlau (feem ntau yog txhuas). Cov cuab yeej yog tsim los ntawm kev tso ib daim kab xev ua los ntawm cov hlau nquag ua rau hauv electrolyte, nyob rau saum npoo ntawm cov yeeb yaj kiab uas muaj zog oxide tsim, uas ua rau nws muaj peev xwm insulate cov hlau.
Lub ntsiab feature ntawm electrolytic hom capacitors yog lub xub ntiag ntawm polarity, ntawm ib tug nqi uas lawv tuav lub ntsuas voltage, thiab thaum nws hloov, lawv sai sai vau. Qhov no tshwm sim los ntawm cov txheej txheem tshuaj uas tshwm sim ntawm cov electrolyte thiab cov hlau ntawm cov phaj. Cov oxide zaj duab xis maj mam tawg thiab tawg.
Txawm li cas los xij, yog tias pom qhov tseeb polarity, microcracks tau nrawm nrawm nrog cov oxide tshiab. Qhov zoo ntawm cov khoom siv no suav nrog kev muaj peev xwm siab, qhov tsis zoo yog polarity, tsis muaj zog, hnav nrawm, siab inductance.
Viewscapacitors thiab lawv daim ntawv thov
Tseem muaj cov khoom siv uas mica ua raws li dielectric, lawv tau siv ntau yam khoom siv hluav taws xob. Txij li thaum mica muaj peev xwm khaws tau lub zog ntawm nws tus kheej, cov hom capacitors muaj peev xwm siab thiab hluav taws xob muaj zog. Qhov tsis zoo suav nrog qhov ntsuas tsis ruaj khov, tsis yog-linearity, tus nqi siab, thiab kev muaj peev xwm-tam sim no dependence.
Ntxiv rau, cov hom ceramic ntawm capacitors, zaj duab xis, Teflon, polypropylene thiab lwm yam khoom siv tau pom daim ntawv thov.
