Kuj ntawm lub capacitor

Ib tug capacitor yog ib qho ntawm feem ntau cov ntsiab ntawm cov hluav taws xob circuits. Hom capacitors, ib co ntawm cov tsis, xws li cov kuj ntawm lub capacitor, sib tham nyob rau hauv no tsab xov xwm.

Peb hais tau tias ob tug hlau electrodes sib cais los ntawm ib tug txheej ntawm huab cua, thiab muaj ib tug capacitor. Txhua yam ntawm cov phiaj nws muaj nws cov zis thiab yuav tsum txuas nrog rau ib tug hluav taws xob Circuit Court. Xws li ib tug ntaus ntawv muaj tej yam ntxwv, thiab ib tug ntawm lawv yog cov tsis kam ntawm cov capacitor.

Capacitor los yog raws li nws yog hu ua, lub peev xwm mus ua tau ib tug heev interesting ntaus ntawv. Suffice nws hais tias nws tsis dhau DC. Yog hais tias koj saib nyob rau hauv lub DC los ntawm no taw tes ntawm view, cov kuj ntawm lub capacitor yog heev loj, yuav luag infinite DC.

Nyob rau tib lub sij hawm, thawj lub sij hawm ntawd thaum txuas lub thawv mus rau lub DC Circuit Court tam sim no yog nws xwb. Hauv lub complex dab coj qhov chaw. Thaum cov capacitance yog them, tam sim no khiav zoo tsis tu tsis tseg. Tab sis muaj ib tug caveat, vim lub dielectric zoo. Tsis muaj teeb meem li cas zoo ib insulator tej zaum yuav, tseem ntws los ntawm nws tam sim no tu siab heev. Nws yog hu ua to tam sim no.

Uas to tam sim no yog qhia txog qhov uas zoo tshaj ntawm cov insulator siv nyob rau hauv qhov siv thiab ua capacitors. Lub zoo insulator, lub to tam sim no yog me me thiab. Ntawm no, ib tug yuav xav txog cov teeb meem yog lub voltage uas tus capacitance yog them, muaj ib tug to tam sim no uas ntws los ntawm cov them neeg. Yog li ntawd, los ntawm Ohm txoj cai peb yuav tau xam lub impedance ntawm lub capacitor. Nws yuav ua tau zoo kawg, to ntxhee nyob rau hauv niaj hnub ntim yog zauv feem ntawm microamps.

Ib tug sib txawv me ntsis duab zoo thaum lub capacitor yog raug rau ib tug alternating tam sim no. Tam sim no ntws dawb do los ntawm cov hlab. Yog vim li cas yog hais tias muaj yog ib tug txheej txheem lossi tawm-them cov capacitor. Ib tug txheej txheem ntawm tej tam sim no txaus txuam nrog nws poob vim muaj cov kuj nyob rau hauv cov ntaub ntawv no, dhau li ntawm tus active kuj nyob ntawm tej tam sim no capacitance ntawm lub capacitor vim nws cov dab, namely them thiab ntxub.

Cov hluav taws xob thaj chaw ntawm cov khoom tiav nyob ntawm ntau yam. Cov no muaj xws zoo, geometric qhov ntev, lub hom dielectric. Nws muaj ntau hom ntawm capacitors raws li ib tug dielectric yog siv nyob rau hauv ib lub tshuab nqus, huab cua, yas, mica, daim ntawv, iav, ceramics, txhuas-ntsha tantalum ntsha.

Lub ob hom yog hu ua electrolytic capacitors, lawv feem ntau muaj ib tug ntau dua muaj peev xwm. Lwm yam capacitors hu ua nyob rau dielectric hom - daim ntawv, tej hub, iav. Txhua yam ntawm lawv nws muaj nws tus yam ntxwv, lawv tus cwj pwm nyob rau hauv sib txawv tsis ntawm ib tug hluav taws xob tam sim no, nws tus yam ntxwv thiab daim ntawv thov.

Yog li, lub hub capacitors yog feem ntau siv nyob rau hauv filtering rau siab zaus suab nrov circuits electrolytic - rau filtering suab nrov thaum uas tsis muaj frequencies. Thiab ua ke nrog thaum uas tig mus kev twb kev txuas ntawm lub tej hub thiab electrolytic capacitors, nws hloov tawm lub feem ntau lim siv nyob rau hauv yuav luag tag nrho cov schemes. Nyob rau hauv txhua tus neeg mob lub thawv yog ib tug tsau muaj nqi xws li 0.15 microfarads.

Nws yog tsim nyog yuav tau nco ntsoov rau hauv lub xub ntiag ntawm ib tug nce mus nce los capacitor, nyob rau hauv lawv muaj peev xwm mas nws txawv nyob ntawm seb qhov chaw ntawm lub tswj lub pob caus. Qhov no yog tiav los ntawm kev hloov lub overlap ntawm lub capacitor daim hlau. Raws li ib tug tshwj xeeb cov ntaub ntawv ntawm ib tug nce mus nce los capacitor, muaj thiaj li hu ua trimmer capacitors. Nyob rau hauv lawv, dhau lawm, lub peev xwm tej zaum yuav txawv - tab sis mus rau ib tug tsawg raws li thiab tsuas yog nyob rau theem ntawm cov khoom haum.

Lub nomenclature siv nyob rau hauv capacitors yog loj loj - ob qho tag nrho nyob rau hauv lub dielectric hom thiab los ntawm tsim.