Cov lus qhia txog kev nrhiav nrawm nrawm hauv cov khoom siv hluav taws xob nrog lub multimeter
Raws li yog cov paub zoo, cov khoom siv hluav taws xob tsis muaj zog tuaj yeem tshwm sim txhua lub sijhawm. Yuav ua li cas kuaj kom xau dej kom raws sijhawm? Ntawm no yog ob peb txoj kev yooj yim rau txhua tus neeg sim.
Firstly, siv ntau ntau rau kev ntsuas cov tofile voltage. Muab cov malideter hloov nyob rau hauv lub ac voltage ntsuas hom, feem ntau ntawm 250V AC voltage. Tom qab ntawd ntxig cov kev sojntsuam dub rau hauv cov av nyob ze ntawm cov cuab yeej nyob ze ntawm lub cuab yeej raug ntsuas thiab txuas cov kev sojntsuam liab rau cov khoom siv. Txij ntawm no, saib cov kev nyeem rau ntawm multimeter. Yog tias rab koob tsis txav mus, koj tuaj yeem hloov mus rau cov iav tsawg los ntawm ib qho los ntawm ib qho kom txog thaum cov ntaub ntawv tshwj xeeb tau tso tawm, uas yog cov totion ntawm lub cuab yeej. Yog tias tseem tsis muaj qhov taw qhia thaum cov kev sojntsuam yog nyob ntawm qis tshaj, nws txhais tau tias tsis muaj qhov tshwm sim tsis txaus hauv cov khoom siv.
Thib ob, siv lub tshuab hluav taws xob kom kuaj xyuas cov tshuaj lom hluav taws xob. Tus kuaj xyuas tuav tus cwj mem xeem thiab ncaj qha txuas rau cov hlau pov cov khoom siv hluav taws xob. Thaum Neon Tube nyob rau hauv kev sim mem teeb ntsia, nws qhia tau tias muaj qhov tshwm sim tsis muaj nyob rau hauv cov khoom siv thiab hais tias lub tenter yog siab. Thaum Neon Tube tsis teeb li, nws tsis qhia tau tias tsis muaj qhov tshwm sim tsis muaj kev xau nyob rau hauv cov khoom siv. Nws yuav yog vim tsis muaj voltage, thiab neon tub raj yuav tsis taws, lossis tej zaum yuav tsis muaj kev xau.
Thib peb, thaum tsis muaj cov ntsuas hluav taws xob multimeter lossis voltage kuaj, koj tuaj yeem kov cov hlau pov tseg ntawm cov khoom hluav taws xob nrog sab nraub qaum. Thaum muaj loog lossis hluav taws xob, nws qhia tau tias cov cuab yeej muaj kev xau dej. Thaum muaj kev nkag siab ntawm hluav taws xob hluav taws xob, nws yog qhov tsim nyog yuav tsum ceev faj, qhia tias to volage yog qhov siab. Nres lub tshuab los kuaj xyuas thiab txheeb xyuas qhov ua rau, tshem tawm qhov txhaum ua ntej siv, lwm yam hluav taws xob sib tsoo yuav tshwm sim.
