Yuav ua li cas ntsuas kev hloov pauv tam sim no (AC) thiab ncaj qha tam sim no (DC) nrog kev sib ntxiv
Kev ntsuas AC voltage nrog cov digital page kev sojntsuam rau hauv av (qhia hauv qhov kev sojntsuam dub) thiab sojntsuam liab ntxiv rau ib ~) lub qhov; Cov iav hais txog qhov ntau ntawm 750 (qee tus yog 1000) hauv AC ~ kem (yog ntsuas 220V lub zog loj). Tom qab ntawd kov ob lub qhov ntawm lub zog hluav taws xob sib cais, thiab kev nyeem ntawv yog AC Voltage muaj nuj nqis.
Using a pointer meter to measure AC voltage: Connect the black probe to negative or ground, connect the red probe to+, set the gear to AC~500V, insert two probes into the same digital multimeter for measurement, and read the number pointed by the pointer corresponding to the large range on the right side: that is, if the 500V gear is selected, the reading should look at the row marked with the * large number on the right side of the reading disc. Yog tias tus pointer ntsiab lus rau 20, tom qab ntawv nyeem yog 200V.
Cov digital motimeter rau kev ntsuas DC voltage: thaum ntsuas AC Voltage, tsuas yog txuas nrog rau + tus ncej liab yog txuas nrog rau + tus ncej ntawm lub zog mov. Lub iav yog teeb tsa DC (lossis kab rov tav luv hauv qab tsab ntawv V), thiab cov ntau yog nyob ntawm qhov xwm txheej tshwj xeeb, los ntawm loj mus rau me me. Piv txwv li, thaum kuaj tsis muaj . 5}} roj teeb, xaiv ib qho 2V ntau. Yog tias polarity tau thim rov qab, yuav muaj cov zaub tsis zoo ua ntej nyeem.
Kev ntsuas DC voltage nrog tus pointer multimeter 0. Kev nyeem ntawv tib yam li ntsuas hluav taws xob ntau li tau piav saum toj no; Thaum tus qauv zoo thiab tsis zoo ntawm DC hluavtage tsis tuaj yeem txiav txim siab, nws tuaj yeem ntsuas tau li PT voltage ua ntej, tab sis kev nyeem ntawv tsis txhawj xeeb. Tsuas yog cov polarity ntawm cov kev sojntsuam yog thim rov qab thiab ntsuas kom pom qhov twg ntawm ob ntsuas ntsuas yuav tsum xav tau deflect. Tom qab ntawd, cov kev sojntsuam yog sib cuag nrog qhov raug zoo thiab tsis zoo. Tom qab ntawd hloov cov iav rau cov khoom siv uas tsim nyog ntawm DC voltage thiab ntsuas kev nyeem ntawv.
