Yuav txheeb xyuas cov capacitors nrog lub multimeter
1. Nrhiav tau ntawm cov chaw ruaj ruaj
(1) Rau kev kuaj pom ntawm cov chaw muaj peev xwm capacitors nrog lub peev xwm saum 0.01 PF, kho tus pointer multimeter rau lub poin 10k Ohm ntau tshaj thiab ua Ohm Xoom. Tom qab ntawd, siv cov kev sim liab thiab dub ntawm ntau qhov kev soj ntsuam me me, nws tau txiav txim siab rau infinity, nws tuaj yeem txiav txim siab tias lub catacters yog qhov qub; Yog hais tias tus pointer ntawm pultimeter plotimeter plotimat rau ib puag ncig "0" Lub sijhawm thaum lub catacitect tau raug tawg los yog xau dej ntau heev; Yog tias thaum lub sijhawm sojntsuam tau txuas, tus pointer tsis rov qab mus rau infinity tom qab viav vias tom qab viav vias; Yog hais tias pultimat analimeter tus pointer tsis viav ob zaug, nws tuaj yeem txiav txim siab tias lub cacacitor yog qhib Circuit Court.
(2) Thaum tshawb pom cov peev xwm ruaj khov nrog cov peev xwm tsawg dua 0.01 pf thiab cov pa hluav taws xob qis dua rau kev ntsuas mus rau qhov ntsuas tau me me. Tsuas yog xau, sab hauv cov kab hauv qab luv, lossis kev sib tsoo tuaj yeem tshawb xyuas. Thaum ntsuas kev ntsuas, siv R × 10K ntau ntawm multimeter thiab txuas ob yam kev sim rau tus lej papacitor. Tus nqi tsis kam yuav tsum muaj qhov tsis kawg. Yog hais tias tus nqi tiv taus yog xoom, nws tuaj yeem txiav txim siab tias cov capacitor yog vim li cas vim tsis muaj tseeb los yog sab hauv.
(3) Ntes 10PF ~ 0.01; TF cov capaport capacitor tuaj yeem kho tau siv cov qauv hauv qab no. Teem lub multogeter rau r × 10k ntau thiab xaiv ob tontorss 3dc6 (lossis 9013) nrog tus nqi raws siab dua 100 los tsim ib qho kev sib xyaw ua ke. Lub Circuit Court schematic yog qhia hauv daim duab 2. Los ntawm kev siv cov khoom siv ntsuas hluav taws xob, lub zog tam sim no ntawm lub viav vias nthuav dav ntawm cov potimeter. Txuas cov capacitor uas tau xeem ntawm lub hauv paus B thiab Collector C ntawm cov raj raj nrog, thiab txuas cov kev ua haujlwm liab thiab dub ntawm cov raj xa, feem nrog. Yog tias tus taw qhia ntawm cov viav vias me ntsis thiab rov qab mus rau infinity, nws qhia tau tias lub capacitance yog li qub; Yog hais tias tus pointer tsis txav lossis tsis tuaj yeem rov qab mus rau infinity, nws qhia tias lub capacitor yog puas. Thaum sim cov haujlwm, tshwj xeeb yog thaum ntsuas qhov peev xwm me me capacitors, nws yog ib qho tsim nyog yuav rov qab hloov ob lub capacitor pins kom pom meej lub viav vias ntawm tus pointer.
