Yuav ua li cas siv ib tug multimeter los ntsuas voltage
1. Ntsuas qhov voltage:
Thaum ntsuas qhov voltage (los yog tam sim no), yuav tsum xaiv qhov zoo. Yog tias ib qho me me siv los ntsuas qhov hluav taws xob loj, yuav muaj kev phom sij ntawm qhov ntsuas kub; Yog tias siv ntau yam los ntsuas qhov hluav taws xob me me, tus pointer deflection tsawg dhau los nyeem.
Kev xaiv ntawm qhov ntau yuav tsum sim ua kom tus pointer deflect mus txog 2/3 ntawm tag nrho cov nplai. Hauv qhov ntsuas qhov tseeb, thaum kwv yees tus nqi ntawm qhov ntsuas qhov ntsuas tsis tuaj yeem txiav txim siab, qhov hloov pauv tuaj yeem hloov mus rau qhov siab tshaj plaws ua ntej, thiab tom qab ntawd qhov ntau tuaj yeem raug txo mus rau qhov tsim nyog. Feem ntau, thaum ntsuas qhov hluav taws xob, lub ntsuas hluav taws xob yuav tsum tau txuas nrog lub voj voog nyob rau hauv kev sim nyob rau hauv parallel.
ib. Kev ntsuas ntawm AC voltage: Muab ib qho kev hloov ntawm multimeter ntawm AC thiab DC voltage ntau, thiab lwm qhov hloov ntawm qhov tsim nyog ntawm AC voltage. Ob qhov kev xeem coj ntawm lub multimeter txuas nrog rau qhov sib npaug nrog lub voj voog lossis thauj khoom hauv kev sim.
b. Kev ntsuas ntawm DC voltage: muab ib qho kev hloov ntawm lub multimeter ntawm AC thiab DC voltage zog, thiab lwm qhov hloov ntawm qhov tsim nyog ntawm DC voltage, thiab qhov "ntxiv" xeem lead (liab test lead) txuas nrog lub peev xwm siab, "Lub -" xeem lead (dub xeem lead) yog txuas nrog lub peev xwm uas tsis muaj, uas yog, tam sim no ntws los ntawm lub "ntxiv" xeem lead thiab ntws tawm ntawm lub "-" xeem lead. Yog hais tias qhov kev xeem coj tau thim rov qab, tus pointer ntawm lub taub hau ntawm lub 'meter' yuav raug deflected nyob rau hauv qhov opposite direction, thiab nws yog ib qho yooj yim rau khoov tus pointer.
