Kev npaj ua ntej siv multimeter (AC millivoltmeter):
(1) Paub txog lub ntsiab lus ntawm cov cim ntawm lub dial thiab lub luag haujlwm tseem ceeb ntawm cov pob qhov rooj thiab cov keyboards xaiv.
(2) Ua raws li kev hloov kho tshuab xoom. Ntawd yog, thaum tsis muaj hluav taws xob ntsuas, ua tus pointer ntawm multimeter taw tes rau txoj hauj lwm ntawm xoom voltage lossis xoom tam sim no.
(3) Raws li hom thiab qhov loj ntawm qhov ntsuas, xaiv lub iav thiab ntau yam ntawm kev hloov pauv, thiab nrhiav cov kab sib txuas. Txhawm rau ntsuas qhov hluav taws xob, ua kom lub taub hau ntawm qhov kev xaiv ntau yam hloov nyob rau hauv tsib kauj ruam ntau yam cim nrog V. Yog tias ntsuas AC voltage, nws yuav tsum taw tes rau V. Thiab yog li ntawd, yog tias koj xav hloov qhov tsis kam, qhov hloov yuav tsum taw tes. mus rau Ω ntau. Qhov ntsuas tam sim no yuav tsum taw tes rau mA lossis UA.
(4) Xaiv txoj hauj lwm ntawm qhov kev ntsuam xyuas cov hlau lead.
(5) Yuav ua li cas nkag siab txog kev nyeem ntawv multimeter
Raws li qhov kwv yees tus nqi ntawm lub voj voog nyob rau hauv kev sim, xaiv ib txoj haujlwm tsim nyog. Nco ntsoov tias qhov ntsuas tus nqi qhia los ntawm qhov ntxeev ntawm qhov hloov pauv yog tus nqi sib xws ntawm kev nyeem ntawv tag nrho ntawm rab koob ntawm lub taub hau ntsuas. Thaum nyeem cov 'meter', koj tuaj yeem nyeem tus nqi tiag tiag ntev npaum li nws hloov dua siab tshiab.
Piv txwv li, tus nqi siab tshaj plaws ntawm txhua lub xov tooj ntawm tes qhuav yog 1.5V, yog li nws tuaj yeem muab tso rau hauv 5V ntau yam. Lub sijhawm no, 500 ntawm tag nrho cov nplai nyeem ntawm rab koob ntawm lub vaj huam sib luag yuav tsum tau nyeem raws li 5. Qhov ntawd yog 100 zaus me dua. Yog tias rab koob taw qhia ntawm 300 cim, nws nyeem 3V. Tsuas yog rau cov iav tiv thaiv, txhua lub zog ntawm qhov hloov pauv tau nyeem qhov ntsuas tau ua li no.
