Kev paub yooj yim ntawm cov khoom siv hluav taws xob Part II
lub Capacitor
1. Lub capacitor feem ntau sawv cev los ntawm "C" ntxiv rau tus lej hauv Circuit Court (piv txwv li, C13 sawv cev rau lub capacitor naj npawb 13). Lub capacitor yog ib yam khoom uas muaj ob lub yeeb yaj kiab hlau abutting thiab sib cais los ntawm cov khoom siv insulating. Cov yam ntxwv ntawm lub capacitor feem ntau yog DC-thaiv AC.
Qhov loj ntawm lub peev xwm capacitor yog qhov loj ntawm lub zog uas tuaj yeem khaws cia. Qhov thaiv cov nyhuv ntawm lub capacitor ntawm lub teeb liab AC yog hu ua capacitive reactance, uas muaj feem xyuam rau qhov zaus thiab capacitance ntawm AC teeb liab.
Capacitive reactance XC=1/2πf c (f qhia qhov zaus ntawm AC teeb liab, C qhia txog 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. Cov txheej txheem kev txheeb xyuas: Cov txheej txheem kev txheeb xyuas ntawm lub capacitance yog qhov tseem ceeb tib yam li kev txheeb xyuas qhov kev tiv thaiv, thiab muaj peb hom: txoj kev ncaj nraim daim ntawv lo, xim txheej txheej txheem thiab tus lej txheej txheem. Lub hauv paus chav tsev ntawm lub capacitor yog siv los rub (F), lwm units
Tsis tas li ntawd: millifarad (mF), microfarad (uF), nanofarad (nF), picofarad (pF). Qhov twg: 1 Farad=103 millifarads=106 microfarads=109 nanofarads=1012 picofarads
Lub peev xwm ntawm lub peev xwm loj capacitor yog qhia ncaj qha rau ntawm lub capacitor, xws li 10 uF / 16V.
Capacitance qhov tseem ceeb ntawm me me capacitance yog sawv cev los ntawm cov tsiaj ntawv lossis cov lej ntawm cov capacitors.
Letter notation: 1m=1000 uF 1P2=1.2PF 1n=1000PF
