1. Lub capacitor feem ntau yog sawv cev los ntawm "C" ntxiv rau cov lej hauv Circuit Court (xws li C13 txhais tau hais tias lub capacitor suav nrog 13). Lub capacitor yog tsim los ntawm ob lub yeeb yaj kiab hlau ze rau ib leeg, sib cais los ntawm cov khoom siv insulating hauv nruab nrab. Cov yam ntxwv ntawm lub capacitor yog Nws yog DC rau AC.

Qhov luaj li cas ntawm lub peev xwm capacitor yog tus nqi hluav taws xob uas tuaj yeem khaws cia.Qhov cuam tshuam ntawm lub capacitor ntawm lub teeb liab AC hu ua capacitive reactance, uas muaj feem xyuam rau qhov zaus thiab capacitance ntawm AC teeb liab.

Capacitance XC = 1 / 2πf c (f sawv cev rau qhov zaus ntawm AC teeb liab, C sawv cev rau qhov capacitance)

Hom capacitors feem ntau siv hauv xov tooj yog electrolytic capacitors, ceramic capacitors, nti capacitors, monolithic capacitors, tantalum capacitors thiab polyester capacitors.

2. Kev txheeb xyuas txoj kev: Cov txheej txheem kev txheeb xyuas ntawm lub capacitor yog qhov tseem ceeb tib yam li cov txheej txheem kev txheeb xyuas ntawm cov resistor, uas tau muab faib ua peb hom: txoj kev ncaj ncaj, xim qauv qauv thiab tus lej qauv. Lub hauv paus chav tsev ntawm lub capacitor yog qhia los ntawm Farah (F), thiab lwm yam units yog: millifa (mF), microfarad (uF), nanofarad (nF), picofarad (pF).

Ntawm lawv: 1 farad = 103 millifarad = 106 microfarad = 109 nanofarad = 1012 picofarad

Tus nqi capacitance ntawm lub capacitor loj yog cim ncaj qha rau ntawm lub capacitor, xws li 10 uF / 16V

Tus nqi capacitance ntawm lub capacitor nrog lub peev xwm me me yog sawv cev los ntawm cov ntawv lossis cov lej ntawm lub capacitor

Letter notation: 1m = 1000uF 1P2 = 1.2PF 1n = 1000PF

Kev sawv cev digital: Feem ntau, peb tus lej yog siv los qhia qhov loj ntawm lub peev xwm, thawj ob tus lej sawv cev rau tus lej tseem ceeb, thiab tus lej thib peb yog qhov loj.

Piv txwv li: 102 txhais tau tias 10 × 102PF = 1000PF 224 txhais tau tias 22 × 104PF = 0.22 uF

3. yuam kev rooj ntawm capacitance

Symbol: FGJKLM

Kev tso cai yuam kev ± 1% ± 2% ± 5% ± 10% ± 15% ± 20%

Piv txwv li: ceramic capacitor ntawm 104J qhia tias muaj peev xwm ntawm 0.1 uF thiab qhov yuam kev ntawm ± 5%.