Multimeter puas tuaj yeem ntsuas capacitance? Yuav ua li cas siv ib tug multimeter los ntsuas capacitance
1. Pointer multimeter ntes capacitance
1.1. Kev txheeb xyuas qhov ruaj khov capacitance
(1) Kev kuaj xyuas lub peev xwm ruaj khov nrog lub peev xwm saum toj no 0.01 pF Kho tus pointer multimeter rau R × 10k ohm thaiv, thiab ua qhov kev hloov kho ohm mus rau xoom, tom qab ntawd siv qhov ntsuas liab thiab dub cwjmem ntawm lub multimeter kom kov ob tus pins ntawm lub capacitor raws li, thiab saib tus pointer ntawm lub multimeter hloov, raws li qhia nyob rau hauv daim duab 1. Yog hais tias tus pointer ntawm lub multimeter viav vias me ntsis mus rau sab xis thaum qhov kev ntsuam xyuas yog tig rau, thiab ces. rov qab mus rau infinity. Tom qab hloov qhov kev xeem coj, ntsuas dua, thiab tus pointer kuj swings mus rau sab xis thiab ces rov qab mus rau infinity, ces nws yuav raug txiav txim tias lub capacitance yog li qub; , tus pointer ntawm lub multimeter viav vias mus rau thaj tsam ntawm "0", nws tuaj yeem txiav txim siab tias lub capacitor puas tawg lossis tawg loj heev; Yog tias tus pointer tsis viav vias, nws tuaj yeem txiav txim siab tias lub capacitor qhib.
(2) Kev kuaj xyuas cov capacitors ruaj khov nrog lub peev xwm tsawg dua 0.01 pF Thaum pom cov capacitors me me hauv qab 10pF, lub capacitance me dhau, yog li siv multimeter los ntsuas, tsuas yog xyuas seb puas muaj cov pa tawm, sab hauv luv. Circuit Court lossis tawg tshwm sim: xaiv Multimeter R × 10k thaiv, txuas ob qhov kev xeem coj mus rau ob tus pins ntawm lub capacitor ntawm qhov siab, thiab tus nqi kuj yuav tsum yog qhov kawg. Yog tias qhov ntsuas qhov ntsuas tsis zoo yog xoom, nws tuaj yeem txiav txim siab tias lub capacitor puas los ntawm kev xau lossis kev puas tsuaj sab hauv.
