Lub capacitor yog ib qho khoom siv hluav taws xob siv los khaws cov hluav taws xob hluav taws xob. Nws muaj ob daim hlau conductive sib cais los ntawm cov khoom siv insulating hu ua **dielectric**. Thaum muaj hluav taws xob siv thoob plaws lub capacitor, ib qho hluav taws xob hluav taws xob yog tsim los ntawm cov phiaj, cia lub capacitor khaws lub zog.
Yuav ua li cas lub Capacitor ua haujlwm
1. Kev them nyiaj yug:
Thaum qhov hluav taws xob tau siv thoob plaws lub capacitor lub terminals, cov nqi sib sau rau ntawm daim hlau. Ib lub phaj sau cov nqi zoo, thaum lwm tus sau cov nqi tsis zoo. Cov khoom siv dielectric nyob nruab nrab ntawm daim hlau tiv thaiv cov nqi ntws ncaj qha los ntawm, khaws cia lub zog hauv hluav taws xob tsim. Kev them nqi txuas ntxiv mus kom txog thaum qhov hluav taws xob thoob plaws lub capacitor sib npaug ntawm qhov siv hluav taws xob.
2. Tso tawm:
Thaum lub capacitor txuas nrog lub voj voog, cov nqi khaws cia ntws rov qab los ntawm lub voj voog, tsim kom muaj qhov tam sim no. Qhov no tso tawm lub zog khaws cia rau hauv Circuit Court load kom txog thaum tus nqi depleted.
Cov yam ntxwv tseem ceeb ntawm Capacitor
- Muaj peev xwm:
Lub peev xwm ntawm lub capacitor los khaws cov nqi yog hu ua capacitance, ntsuas hauv farads (F). Ib tug loj capacitance txhais tau tiascapacitortuaj yeem khaws cov nqi ntau dua. Lub capacitance yog cuam tshuam los ntawm thaj tsam ntawm daim hlau, qhov kev ncua deb ntawm lawv, thiab cov khoom ntawm cov khoom siv dielectric.
- Zog Cia:
Capacitors ua zoo li ib ntus cia khoom siv hluav taws xob, zoo ib yam li cov roj teeb tab sis tsim los siv rau lub sijhawm luv. Lawv tswj cov kev hloov pauv sai hauv qhov hluav taws xob thiab du tawm qhov hloov pauv, ua rau kev ua haujlwm ruaj khov.
- Cov dej ntws tam sim no thiab sib npaug Series Resistance (ESR):
Capacitors muaj qee lub zog poob thaum lub sijhawm them thiab tawm mus. Leakage tam sim no hais txog qhov qeeb qeeb ntawm cov nqi los ntawm cov khoom siv dielectric txawm tias tsis muaj lub nra. ESR yog qhov kev tiv thaiv sab hauv los ntawm cov khoom siv hauv lub capacitor, cuam tshuam rau nws cov txiaj ntsig.
Kev siv tswv yim ntawm Capacitor
- Lim:
Hauv cov khoom siv hluav taws xob, cov capacitors ua raws li cov ntxaij lim dej kom du tawm qhov hloov pauv ntawm qhov hluav taws xob thiab tshem tawm cov suab nrov tsis xav tau, kom ntseeg tau tias qhov hluav taws xob ruaj khov.
- Coupling thiab Decoupling:
Nyob rau hauv cov teeb liab kis tau tus mob, capacitors yog siv los hla AC signals thaum thaivDC Cheebtsam, tiv thaiv DC hloov ntawm kev cuam tshuam kev ua haujlwm hauv Circuit Court.
- Zog Cia:
Capacitors khaws cia thiab tso tawm lub zog sai, ua rau lawv muaj txiaj ntsig zoo hauv cov ntawv thov xws li lub koob yees duab flashes, cov cuab yeej siv hluav taws xob, thiab lwm yam khoom siv uas xav tau luv luv ntawm qhov siab tam sim no.
Cov ntsiab lus
Capacitors ua lub luag haujlwm tseem ceeb hauv cov hluav taws xob hluav taws xob los ntawm kev khaws cia thiab tso tawm hluav taws xob hluav taws xob. Lawv pab tswj qhov voltage, khaws lub zog, thiab tswj cov teeb liab. Xaiv qhov zoo thiab qhov tshwj xeeb ntawm lub capacitor yog qhov tseem ceeb rau kev ua haujlwm thiab kev ntseeg siab ntawm cov khoom siv hluav taws xob.
Lub sij hawm xa tuaj: Sep-11-2024