Txhim kho twj ywm nrhiav kom tau txoj kev
1. Txheeb xyuas lub zog me me hauv qab 10pF: Vim tias lub peev xwm ruaj khov hauv qab 10pF tsawg dhau, siv cov multimeter ntsuas ntsuas, tsuas yog ntsuas xyuas qhov zoo rau cov dej xau, sab hauv luv luv lossis sab nraud. Thaum ntsuas, koj tuaj yeem siv cov multimeter R × 10k block, siv ob lub ntsuas pob cwj mem los txuas ob lub pins ntawm lub capacitor, qhov tawm tsam yuav tsum yog infinity. Yog tias qhov ntsuas tus nqi tsis kam (tus pointer hloov mus rau sab xis) yog xoom, lub capacitor paim quav yog qhov puas ntsoog lossis sab hauv.
2. Txheeb 10PF ~ 001μF ruaj ruaj capacitor: txiav txim seb nws puas zoo lossis tsis tau los ntawm kev txiav txim seb puas muaj qhov tshwm sim them. Qhov multimeter siv R × 1k block. Cov nqi ntawm beta ntawm ob lub triodes yog txhua yam saum toj 100 thiab qhov nkag mus tam sim no tseem me me. Lub raj xa hluav taws xob ntawm 3DG6 thiab lwm hom ntawm silicon triodes tuaj yeem xaiv. Kev ntsuam xyuas xim liab thiab dub coj los ntawm cov multimeter yog feem txuas nrog emitter e thiab cov c collector ntawm cov raj sib txuas. Vim tias qhov ua kom pom tseeb hauv cov thooj triode, qhov them nyiaj thiab tawm cov txheej txheem ntawm lub ntsuas capacitor tau nthuav dav, kom qhov multimeter pointer viav vias amplitude muaj ntau dua, thiaj li ua kom pom kev soj ntsuam.