Nkag siab Capacitors

Capacitors yog cov cuab yeej siv hauv ntau lub tshuab hluav taws xob los khaws lub zog rau kev siv yav tom ntej. Lawv kuj tuaj yeem ua raws li cov ntxaij lim dej kom hloov cov cim spurious uas yuav ua rau muaj kev puas tsuaj rau cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob. Lawv yog cov tseem ceeb hauv computer nco backup thiab lub hwj chim txias.

Cov qauv yooj yim tshaj plaws ntawm cov capacitors yog ib khub ntawm cov hlau nyias nyias cais los ntawm qhov sib txawv hauv dielectric. Lub cheeb tsam ntawm daim hlau nce raws li ib tug square thiab kev sib cais ntawm lawv nce linearly, thiaj li hais tias lub capacitance (C displaystyle C) yog sib npaug zos rau lub hauv paus square ntawm lub phaj cheeb tsam thiab qhov sib txawv d displaystyle d.

Lub capacitance ntawm ib tug farad (F) txhais tau hais tias ib coulomb nqi ntawm txhua phaj ua rau ib tug voltage ntawm ib volt thoob plaws lub capacitor. Qhov no yog vim hais tias cov nqi sib txawv ntawm cov phaj nyiam ib leeg vim lawv cov hluav taws xob muaj zog. Qhov no yog tus cwj pwm tsis zoo rau cov tswv yim capacitors, tab sis nws tseem yog qhov tseem ceeb uas yuav tsum nco ntsoov.

Qee yam tseem ceeb cuam tshuam txog kev muaj peev xwm muaj xws li cov khoom siv dielectric, cov phaj phaj, thiab kev sib cais ntawm cov phaj. Qhov siab tshaj plaws capacitance feem ntau tau txais thaum cov khoom siv dielectric muaj qhov siab permittivity, cov phaj phaj loj, thiab kev sib cais ntawm cov phaj me me.

Lwm qhov tseem ceeb yog qhov chaw insulating ntawm cov phaj, uas tuaj yeem cuam tshuam qhov siab tshaj plaws capacitance. Qhov siab dua qhov chaw insulating, cov khoom siv hluav taws xob ntau dua yuav tsum tau sau nws. Qhov no tuaj yeem ua rau qis tshaj qhov capacitance thiab tuaj yeem txo qhov peev xwm tag nrho ntawm lub capacitor.

Qhov no tuaj yeem yog qhov tseem ceeb rau kev txiav txim siab thaum tsim lub capacitor, tshwj xeeb tshaj yog rau cov ntawv thov uas xav tau ntau lub peev xwm. Nws tseem tuaj yeem pab txiav txim siab seb cov khoom siv twg yuav zoo dua rau ib daim ntawv thov tshwj xeeb.

Muaj ntau ntau hom capacitor, txhua qhov sib txawv ntawm qhov loj, qhov hnyav, thiab tus nqi. Lawv tau muab faib ua pawg raws li lawv tsim thiab lub hom phiaj, suav nrog:

Xaiv cov khoom tsim nyog rau koj daim ntawv thov

Capacitors tuaj nyob rau hauv ntau hom thiab cov ntaub ntawv, nrog rau txhua tus tsim los rau kev siv tshwj xeeb. Lawv tuaj yeem ua los ntawm ntau txheej ceramic, tubular ceramic, lossis polyester zaj duab xis, nrog rau txhua tus muaj cov khoom sib txawv thiab kev siv.

Piv txwv li, PPS zaj duab xis capacitors feem ntau yog siv rau hauv circuits uas yuav tsum tau zoo kub stability thiab zaus kam rau ua. Lawv muaj nyob rau hauv ntau yam duab, thiab nyob rau hauv nto mount los yog los ntawm-qhov configurations.

Lawv muaj nyob rau hauv ntau qhov sib txawv voltage, los ntawm DC rau AC, thiab feem ntau yog ntsuas rau 50 volts lossis ntau dua. Lawv yog siv nyob rau hauv industrial hluav taws xob motors thiab computer nco backup, raws li zoo raws li rau lub zog cia.

Qee cov capacitors kuj tseem siv los ua cov khoom siv hluav taws xob hloov kho hauv hluav taws xob hluav taws xob, los tiv thaiv kev thauj khoom inductive los ntawm cov motors thiab cov kab sib kis. Cov no feem ntau yog peb-theem capacitors txuas nrog hauv cov koob mus rau qhov chaw thauj khoom hauv lub tsev lossis chaw siv hluav taws xob.

Capacitors yog ib qho tseem ceeb ntawm cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob uas yuav tsum muaj peev xwm tiv thaiv qhov poob ntawm hluav taws xob los ntawm lub zog tsis ua hauj lwm. Qhov no tso cai rau khaws cia cov ntaub ntawv khaws cia hauv digital circuits, ua rau lawv ua haujlwm txuas ntxiv thaum lub zog rov qab los.