Ib lub capacitor yog cov khoom siv hauv xov tooj cua uas muaj nyob hauv txhua daim duab kos duab. Nws muaj ob lub conductors sib cais los ntawm ib tug dielectric (nyob ntawm seb hom capacitors, ntau hom yog siv), uas yog, lub cev nws yog ib tug Circuit Court break, tab sis ib tug nqi yuav sau nyob rau hauv lub dielectric. Cov yam ntxwv tseem ceeb ntawm txhua tus capacitor yog lub peev xwm los khaws cov nqi - lub peev xwm, thiab qhov nominal voltage ntawm tus nqi no.
Electrolytic capacitors muaj qhov polarity thiab muaj lub peev xwm loj thiab qhov dav dav, cov ntawv capacitors tiv taus qhov hluav taws xob siab, tab sis muaj peev xwm me me. Kuj tseem muaj cov khoom siv uas muaj peev xwm sib txawv, tab sis txhua hom muaj nws tus kheej daim ntawv thov.
Feem ntau, xov tooj cua amateurs ntsib teeb meem ntawm kev xaiv capacitors los ntawm capacitance lossis voltage. Cov kws tshaj lij paub: thaum tsis muaj dab tsi koj xav tau, koj tuaj yeem sib sau ua ke ntawm ntau yam khoom siv, lub roj teeb ntawm lawv. hauv roj teebkev sib xyaw ua ke, kev sib txuas thiab kev sib txuas ntawm cov kab hluav taws xob tau tso cai.
Los ntawm kev sib txuas cov khoom siv sib txuas, koj tuaj yeem ua kom muaj peev xwm. Tag nrho cov nyob rau hauv xws li ib tug roj teeb yuav sib npaug zos rau tag nrho cov peev xwm (Sekv.=C1 + C2 + …), qhov voltage ntawm txhua lub caij yuav sib npaug. Qhov no txhais tau hais tias qhov tsawg kawg nkaus voltage ntawm lub capacitor siv nyob rau hauv kev twb kev txuas yog qhov siab tshaj plaws tso cai rau tag nrho cov roj teeb.
Series kev sib txuas ntawm cov capacitors yog siv thaum tsim nyog los nce qhov voltage uas tuaj yeem tiv taus cov cuab yeej lossis txo lawv cov peev txheej.
Nyob rau hauv qhov version no, cov ntsiab lus txuas nrog raws li cov tswv yim hauv qab no: qhov pib ntawm ib qho nrog qhov kawg ntawm lwm qhov, uas yog, "ntxiv" ntawm ib qho nrog "muab" ntawm lwm tus. Lub capacitance ntawm qhov sib npaug capacitor nyob rau hauv cov ntaub ntawv no yog xam raws li nram no cov mis: 1 / Seq. \u003d 1 / C1 + 1 / C2 + … tsawg tshaj li qhov tsawg kawg nkaus muaj peev xwm siv nyob rau hauv nws.
Ib lub txhab nyiaj capacitor feem ntau muab kev sib xyaw ua ke (sib xyaw)txuas. Txhawm rau xam lub peev xwm ntawm cov cuab yeej xws li cov khoom siv sib txuas thiab kev sib txuas ntawm cov khoom siv hluav taws xob, lub voj voog raug muab faib ua ntu, tom qab ntawd lub peev xwm ntawm lawv txhua tus yog xam nyob rau hauv lem. Yog li, lub peev xwm suav nrog С12=С1 + С2, thiab tom qab ntawd Сeq=С12С3 / (С12 + С3).
Vim yog tsim cov tsev txhab nyiaj capacitor nrog ntau yam teeb tsa thiab txuas, koj tuaj yeem xaiv ib qhocapacitance rau txhua qhov voltage ntawm kev txaus siab. Cov kev sib txuas ntawm cov capacitors, nrog rau kev sib xyaw ua ke, yog siv rau hauv ntau lub xov tooj cua sib txuas ua ke. Nyob rau tib lub sijhawm, nws yuav tsum tau coj mus rau hauv tus account qhov tseeb tias txhua lub capacitor muaj qhov tseem ceeb ntawm tus neeg tsis muaj zog - cov dej ntws tawm tam sim no, nws tuaj yeem ua rau tsis sib npaug ntawm qhov sib npaug ntawm qhov sib txuas thiab cov capacitance hauv series. Nws yog ib qho tseem ceeb heev los xaiv qhov yuav tsum tau shunt tsis kam.
Thaum ua haujlwm nrog cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob, yuav tsum paub txog kev nyab xeeb ntawm tus kheej thiab kev pheej hmoo ntawm hluav taws xob poob.
