Dab tsi yog vim li cas yog vim li cas lub koob ntawm multimeter ntsuas DC tam sim no nyob rau hauv qhov kev taw qhia?
Muaj feem ntau yog digital thiab pointer multimeters. Txij li thaum koj siv hom pointer, koj tuaj yeem siv tus pointer multimeter los piav qhia nws.
1. Muaj nuj nqi ntawm pointer multimeter
Qhov tseeb, tus pointer multimeter yog tib yam li lwm cov khoom siv ntau yam, uas tuaj yeem ntsuas DC tam sim no, DC voltage, AC tam sim no, AC voltage, tsis kam thiab lwm yam ntaub ntawv.
2. Yuav ua li cas kom paub qhov ntsuas ntawm qhov hluav taws xob ncaj qha
Lub taub hau ntawm tus pointer multimeter yog lub taub hau ntawm DC ammeter. Thaum nws yog ib qho tsim nyog los ntsuas qhov DC tam sim no, txhua lub iav yog sib npaug rau kev sib txuas ntawm cov resistor nrog ib qho kev sib txawv nyob rau hauv parallel nrog lub taub hau, thiaj li mus faib cov tam sim no. Thaum ntsuas DC voltage, ib qho kev sib txawv ntawm qhov sib txawv yog txuas nrog rau hauv series nrog lub ntsuas lub taub hau kom txo qhov voltage.
Yuav ua li cas ntsuas nrog ib tug multimeter
Kev siv multimeter tuaj yeem muab faib ua ob peb kauj ruam:
1. Kev soj ntsuam thiab kev hloov kho tshuab xoom yog yuav tsum tau ua ntej siv, uas yog, kom ntseeg tau tias tus pointer nyob ntawm xoom nplai ua ntej siv.
2. Xaiv lub iav kom raug raws li cov ntaub ntawv ntsuas. Piv txwv li, thaum ntsuas DC tam sim no, lub iav raug xaiv raws li DCmA. Ntawm no, DC iav yuav tsum raug xaiv, vim DC yog tam sim no ncaj qha thiab AC yog hloov tam sim no. Cov iav tshwj xeeb yuav tsum tau kwv yees raws li cov ntaub ntawv ntsuas tiag tiag.
3. Cov hlau lead kuaj liab yuav tsum tau muab tso rau hauv qhov "ntxiv" txoj hauj lwm, thiab cov hlau kuaj dub yuav tsum muab tso rau hauv qhov chaw nres nkoj "com". Thaum ntsuas, cov hlau lead kuaj liab yuav tsum nyob ntawm tus ncej zoo ntawm lub cuab yeej hauv kev sim, thiab cov hlau lead dub yuav tsum nyob rau ntawm tus ncej tsis zoo ntawm lub cuab yeej hauv kev sim (ntawm no yog qhov tseem ceeb ntawm cov lus nug no)
Vim hais tias tus yam ntxwv ntawm cov tam sim no ncaj qha yog qhov kev taw qhia tsis hloov nrog lub sij hawm, nws muaj kev taw qhia, thiab cov kev taw qhia yuav tsum tau them sai sai rau thaum ntsuas. Yog ntsuas raws li qhia saum toj no, tus nqi rov qab yuav tshwm sim.
