Yuav ua li cas ceev faj yuav tsum tau coj mus rau lub installation thiab tu ntawm capacitors?
Apr 19, 2023
Lub hauv paus ntawm Capacitor
Capacitors khaws lub zog hauv daim ntawv ntawm cov nqi hluav taws xob uas tuaj yeem tso tawm thaum lawv txuas nrog lub voj voog. Lawv feem ntau yog ua los ntawm ob daim hlau uas sib cais los ntawm cov khoom siv insulating hu ua dielectric.
Capacitor thiab nws cov kev siv
Capacitor s yog siv nyob rau hauv ntau yam khoom siv hluav taws xob kom txo tau cov hluav taws xob dhau los ntawm lawv. Lawv tuaj yeem pom hauv ntau yam khoom siv hluav taws xob, suav nrog xov tooj cua, TV, khoos phis tawj, hluav taws xob xa hluav taws xob thiab lub cev muaj zog.
Lawv kuj tuaj yeem siv los tiv thaiv cov khoom siv hluav taws xob los ntawm qhov txaus ntshai voltage hloov pauv thiab suab nrov. Lawv tuaj yeem lim tawm cov ripples hauv AC fais fab mov, piv txwv li, thiab tuaj yeem siv los hloov pauv tam sim no (AC) mus rau tam sim no ncaj qha (DC).
Dab tsi yog Capacitors?
Lub capacitor muaj ob daim hlau uas muaj qhov sib txawv ntawm lawv. Qhov sib txawv yuav tau ntim nrog lub tshuab nqus tsev lossis cov khoom siv insulating xws li cua. Thaum cov hlau phaj muab tso rau hauv qhov sib npaug, lawv tsim ib qho chaw electrostatic uas attracts thiab repels tsub nqi. Qhov no ua rau cov nqi zoo thiab qhov tsis zoo ntawm txhua lub phaj sib koom ua ke, tsim kom muaj tus nqi hauv lub capacitor.
Lub capacitance ntawm lub capacitor tuaj yeem ntsuas hauv units hu ua farads. A 1-farad capacitor tuaj yeem khaws ib coulomb nqi ntawm 1 volt.
Muaj ntau ntau hom thiab qhov ntau thiab tsawg ntawm cov capacitors, yog li koj yuav tsum ua tib zoo nyeem cov chaw tsim khoom phau ntawv ua ntej sim siv lawv. Cov chaw tsim khoom yuav tsum muab cov lus piav qhia ntawm lub capacitor, nws lub peev xwm thiab nws qhov ntsuas hauv farads.
Yuav Ua Li Cas Ntsuas Lub Capacitor
Lub capacitor yuav tsum raug kuaj rau nws cov rwb thaiv tsev, raws li IEC 61000-4-8: 2002. Lub rwb thaiv tsev tiv thaiv yog ntsuas nyob rau hauv ib puag ncig tswj ntawm tus nqi tas li, rau lub sijhawm tsawg kawg ib feeb.
Qhov kev ntsuas no yog ua tiav siv cov khoom siv sab nraud xws li voltmeter, thiab feem ntau yog siv tib lub sijhawm raws li kev nyeem hluav taws xob sab hauv. Cov txiaj ntsig kev ntsuas yog ces summed muab ib tug tag nrho kev ntsuas ntawm lub rwb thaiv tsev tsis kam ntawm lub capacitor.
Nyob rau hauv lub txhab nyiaj capacitor, txhua lub capacitor hauv txhab nyiaj yuav tsum tau kuaj ib tus zuj zus rau nws cov rwb thaiv tsev tiv thaiv thiab rau nws lub peev xwm los tawm cov hluav taws xob khaws cia rau hauv kev tiv thaiv. Qhov no yog ua kom muaj kev nyab xeeb ntawm kev tiv thaiv thiab kev tiv thaiv nws tus kheej.
Lub capacitor yuav tsum raug cais tawm los ntawm lwm yam khoom siv uas tuaj yeem ua rau tsis muaj kev cuam tshuam cov hluav taws xob khaws cia. Qhov kev sib cais no yuav tsum tau ua los ntawm kev sib cais ntawm Circuit Court rau kev tiv thaiv kev tiv thaiv thiab kev sib cais thib ob, xws li lub fuse lossis lub Circuit Court breaker.
Lub capacitor yuav tsum tau sim rau nws lub peev xwm khaws cia, raws li IEC 61000-4-9: 2007. Lub capacitance tuaj yeem ntsuas hauv chav hu ua pF.
