Ib qho kev paub me ntsis ntawm kev nrhiav cov khoom siv hluav taws xob xau sai nrog Multimeter
Raws li peb txhua tus paub, qhov tshwm sim ntawm cov khoom siv hluav taws xob tuaj yeem tshwm sim txhua lub sijhawm, yuav ua li cas thiaj nrhiav tau qhov tshwm sim ntawm lub sijhawm? Nov yog ob peb txoj hauv kev yooj yim, koj tuaj yeem xav muab nws sim.
Ua ntej, siv lub tshuab ntsuas hluav taws xob los ntsuas qhov hluav taws xob xau, muab lub ntsuas hluav taws xob tso rau ntawm qhov ntsuas hluav taws xob AC, feem ntau hauv AC voltage 250V txoj haujlwm, tom qab ntawd ntxig cov xim dub coj mus rau hauv av ze ntawm lub cuab yeej hauv kev sim, thiab txuas cov kev xeem liab. coj mus rau cov hlau ntawm lub cuab yeej. ntawm lub plhaub. Lub sijhawm no, saib qhov ntsuas ntawm lub multimeter. Yog tias rab koob tsis txav mus, koj tuaj yeem hloov nws mus rau lub iav qis ib qho los ntawm ib qho kom txog thaum cov ntaub ntawv tshwj xeeb tau qhia, uas yog qhov hluav taws xob xau ntawm lub cuab yeej. Yog tias tseem tsis muaj qhov qhia tau tias thaum tus cwj mem xeem nyob rau theem qis tshaj plaws, nws txhais tau hais tias lub cuab yeej tsis muaj qhov xau.
Qhov thib ob, siv lub tshuab electroscope los kuaj xyuas qhov xau. Tus neeg soj ntsuam ncaj qha txuas cov cwj mem electroscope nrog lub plhaub hlau ntawm cov khoom siv hluav taws xob. Thaum lub raj neon nyob rau hauv electroscope cwj mem teeb, nws txhais tau hais tias cov cuab yeej muaj to thiab qhov hluav taws xob to yog siab. Thaum lub raj neon tsis ci, nws tsis tau txhais hais tias cov khoom siv tsis muaj qhov to. Tej zaum nws yuav yog qhov hluav taws xob xau qis thiab lub raj neon tsis tuaj yeem teeb, lossis tej zaum yuav tsis muaj hluav taws xob to.
Thib peb, thaum tsis muaj multimeter thiab electroscope cwj mem, koj tuaj yeem kov cov hlau casing ntawm cov khoom siv hluav taws xob nrog sab nraub qaum ntawm koj txhais tes. Thaum muaj kev loog lossis hluav taws xob poob siab, nws txhais tau hais tias lub cuab yeej muaj qhov hluav taws xob to. Thaum muaj hluav taws xob poob siab, koj yuav tsum tau ceev faj, qhia tias qhov hluav taws xob xau yog qhov siab heev. Nws yog ib qho tsim nyog yuav tsum tau nres lub tshuab los xyuas thiab txheeb xyuas qhov laj thawj, thiab siv nws tom qab kev daws teeb meem, txwv tsis pub nws yuav muaj kev sib tsoo hluav taws xob.
