Txoj kev ntsuas voltage nrog multimeter
Txoj kev ntsuas qhov ntsuas hluav taws xob nrog lub ntsuas hluav taws xob ua ntej ntsuas qhov hloov pauv hauv qhov ntau ntawm tsib lub zog cim nrog V (kom ntsuas qhov hluav taws xob AC, ua kom nws nrog lub iav ntawm AC voltage, thiab thaum ntsuas qhov hluav taws xob DC, ua raws nws nrog. lub zog ntawm DC voltage). Thaum ntsuas qhov voltage, tus cwj mem ammeter yuav tsum txuas nrog lub voj voog hauv kev sim. Raws li qhov kwv yees tus nqi ntawm Circuit Court nyob rau hauv kev sim, xaiv ib qho chaw tsim nyog. Tus nqi siab tshaj plaws ntawm txhua lub roj teeb qhuav yog 1.5V, yog li nws tuaj yeem muab tso rau hauv 5V ntau yam.
Lub sijhawm no, 500 ntawm qhov ntsuas tag nrho ntawm txhais tes ntawm lub vaj huam sib luag yuav tsum tau nyeem raws li 5. piv txwv li scaled los ntawm ib qho ntawm 100. Yog tias rab koob nyob ntawm 300 cim, nws nyeem 3V. Nco ntsoov tias tus nqi ntsuas los ntawm qhov ntxeev ntawm qhov hloov pauv yog tus nqi sib xws ntawm kev nyeem ntawv puv ntawm rab koob ntawm lub taub hau 'meter'. Thaum nyeem cov 'meter', koj tsuas yog yuav tsum tau hloov nws raws li kev nyeem tus nqi tiag tiag. Tsuas yog rau qhov kev tiv thaiv ntau yam, txhua qhov kev hloov pauv hloov pauv tuaj yeem nyeem cov txiaj ntsig ntsuas hauv txoj kev no.
Hauv kev ntsuas qhov tseeb, yog tias koj tsis tuaj yeem txiav txim siab qhov kwv yees ntawm qhov ntsuas qhov ntsuas hluav taws xob, koj tuaj yeem tig qhov hloov mus rau qhov siab tshaj plaws ua ntej, thiab tom qab ntawd txo qhov ntau ntawm cov kauj ruam mus rau qhov chaw tsim nyog. Ua tib zoo saib xyuas qhov zoo thiab qhov tsis zoo polarity thaum ntsuas DC voltage. Yog tias qhov kev xeem coj tau thim rov qab, cov koob xeem yuav thim rov qab. Yog tias koj tsis paub qhov zoo thiab qhov tsis zoo ntawm lub voj voog, koj tuaj yeem tsim qhov ntau ntawm Wantian meter mus rau qhov siab tshaj plaws, sim nws sai sai ntawm lub voj voog hauv kev sim, thiab saib seb tus cwj mem deflects, koj tuaj yeem txiav txim qhov zoo. thiab tsis zoo polarity.
Ntsuas 220V AC. Tig qhov hloov mus rau AC 500V. Lub sijhawm no, qhov ntsuas tag nrho yog 500V, thiab nyeem tau raws li qhov ntsuas 1: 1. Ntxig ob qhov kev xeem coj mus rau hauv lub qhov hluav taws xob, thiab qhov ntsuas qhov ntsuas hluav taws xob yog nyob ntawm qhov ntsuas qhov twg txhais tes taw rau. Thaum ntsuas AC voltage, tsis muaj qhov sib txawv ntawm qhov ntsuas qhov zoo thiab qhov tsis zoo.
1. Kev ntsuas ntawm DC voltage, xws li roj teeb, Walkman fais fab mov, thiab lwm yam. Ua ntej ntxig cov hlau lead dub rau hauv "com" qhov, thiab cov xim liab coj mus rau hauv "V Ω". Xaiv lub pob qhov rooj rau ntau qhov loj dua li qhov kwv yees (ceeb toom: qhov tseem ceeb ntawm lub xov tooj yog qhov siab tshaj plaws, "V-" txhais tau tias DC voltage ntau, "V-" txhais tau tias AC voltage ntau, "A" txhais tau tias tam sim no ntau yam), thiab tom qab ntawd muab Connect qhov kev xeem coj mus rau lub hwj huam mov los yog ob qho tag nrho ntawm lub roj teeb; khaws kev sib cuag ruaj khov. Tus nqi tuaj yeem nyeem ncaj qha los ntawm lub vijtsam zaub, yog tias nws tshwm sim raws li "1.", nws qhia tau tias qhov ntsuas qhov ntsuas tsawg dhau, yog li nws yuav tsum tau nce qhov ntsuas ntau ua ntej ntsuas. Yog tias "-" tshwm nyob rau sab laug ntawm tus nqi, nws txhais tau hais tias qhov polarity ntawm qhov kev xeem cov hlau lead yog qhov txawv ntawm qhov tseeb ntawm cov khoom siv fais fab. Lub sijhawm no, cov hlau kuaj liab txuas nrog rau tus ncej tsis zoo.
2. Kev ntsuas ntawm AC voltage. Kev ntsuas cov hlau lead yog tib yam li qhov ntsuas ntawm DC voltage, tab sis lub pob qhov rooj yuav tsum tig mus rau qhov xav tau ntawm AC iav "V ~". Tsis muaj qhov sib txawv ntawm qhov zoo thiab qhov tsis zoo AC voltage, thiab txoj kev ntsuas yog tib yam li ua ntej. Txawm hais tias ntsuas AC lossis DC voltage, ua tib zoo saib xyuas kev nyab xeeb ntawm tus kheej, thiab tsis txhob kov cov hlau ntawm cov hlau lead ntawm koj txhais tes.
