Lub capacitance ntawm tus capacitor nyob ntawm qhov kev ncua deb ntawm daim hlau, lawv thaj chaw, ntxiv rau qhov txheeb ze ntawm qhov nruab nrab nyob nruab nrab ntawm lawv. Nws yog inversely xwm yeem mus rau thawj ntawm cov tsis sib haum thiab ncaj qha ncaj qha rau ob.
Cov Lus Qhia
Kauj ruam 1
Laij thaj tsam ntawm ib qho ntawm daim phiaj (yog tias lawv sib txawv, tom qab ntawd me dua ntawm lawv), tom qab txhais cov ntaub ntawv thawj zaug mus rau hauv meters. Qhov muab xam yog nyob ntawm cov duab puab. Piv txwv li, rau cov duab plaub: S = ab, qhov twg S yog thaj chaw (m2), a yog qhov ntev (m), b yog qhov dav (m); rau lub voj voog: S = π (R ^ 2), qhov twg S yog thaj chaw (m2), π - naj npawb "pi", 3, 1415926535 (dimension tsis muaj nqi), R - hluav taws xob (m). Tom qab ntawd, thaum xam, xav txog lawv nthuav.
Kauj ruam 2
Los ntawm cov lus, qhov txuas txuas uas tau muab rau hauv qhov kawg ntawm tsab xov xwm, nrhiav cov dielectric tas li ntawm cov khoom nruab nrab uas nyob nruab nrab ntawm daim phiaj. Qhov no yog qhov ntau thiab tsawg tsis muaj qhov sib npaug sib luag rau lub tshuab nqus tsev. Hauv huab cua, nws yog li ntawd ze rau kev sib koom siab (1, 00058986) tias nws feem ntau tau ua rau 1 rau kev yoojyim.
Kauj ruam 3
Hloov cov ntawv pib rau hauv tus qauv: C = (ε abs. Vac. * Ε rel. Yam * S) / d, qhov twg C yog qhov muaj peev xwm (F), ε abs. tseg. - meej dielectric tas mus li ntawm lub tshuab nqus tsev, 8, 8541878176 (F / m), ε rel. tiag * S yog tus txheeb ze dielectric tas mus li ntawm cov khoom sib luag (tsis pom qhov loj me), S yog thaj chaw ntawm qhov tsawg tshaj plaws ntawm daim hlau (m2), d yog qhov kev ncua deb ntawm daim hlau (m).
Kauj ruam 4
Ntawm lub capacitors lawv tus kheej thiab hauv cov voj voos, nws yog ib txwm coj mus rau denote capacitance tsis yog hauv farads lossis millifarads, tab sis, nyob ntawm qhov ntau, hauv microfarads, nanofarads thiab picofarads. Txhais cov lus muab xam rau hauv cov ntawm cov koog uas nws yooj yim tshaj rau sawv cev ntawm nws.
