Yuav ua li cas siv multimeter's fire wire identification feature
Cov ntawv xov xwm ntsig txog piav qhia yuav ua li cas siv multimeter's nyob hlau thaiv, yuav ua li cas siv cov ntaub ntawv xov tooj nyob, thiab yuav ua li cas paub qhov txawv ntawm cov hlau nyob thiab xoom xaim. Yuav ua li cas siv multimeter's live wire identification feature
Cov neeg siv hluav taws xob tau siv ntau lub ntsuas ntsuas es tsis txhob siv cov cwj mem hluav taws xob rau kev saib xyuas thiab daws teeb meem. Nyob rau hauv qhov tseeb, ntau tus neeg tsis paub hais tias lub multimeter tseem tuaj yeem qhia cov xov hlau nyob nruab nrab ntawm cov xaim nruab nrab ntxiv rau tus cwj mem hluav taws xob, uas yuav ua rau muaj qhov sib txawv.
Txoj kev paub qhov txawv ntawm cov hlau nyob thiab xoom xaim los ntawm hluav taws xob cwj mem
Ordinary electric cwj mem: yav dhau los, ib tug cwj mem hluav taws xob tau siv thoob ntiaj teb los tswj thiab kho cov tshuab hluav taws xob. Cov xaim nyob thiab cov xaim nruab nrab tuaj yeem paub qhov txawv nrog tus cwj mem hluav taws xob. Cov xaim nruab nrab yog qhov teeb ci ntawm tus cwj mem hluav taws xob, tsis yog cov xaim nyob.
Cov cwj mem hluav taws xob digital: Vim tias lawv tau yooj yim, cov cwj mem hluav taws xob tsis tshua muaj siv. Rau cov cwj mem hluav taws xob digital, nws ua haujlwm ntxiv xws li kev txiav txim siab seb lub xov tooj puas raug luv-circuited, sib cais nyob ntawm cov xov hlau nruab nrab, thiab txheeb xyuas qhov zoo thiab qhov tsis zoo ntawm DC roj teeb. Nws tsis ua li cas, txij li tus cwj mem hluav taws xob tau hloov zuj zus mus. Tam sim ntawd koj tuaj yeem siv tus cwj mem hluav taws xob los ntsuas cov xaim nyob thiab cov xaim nruab nrab, thiab tom qab ntawd saib qhov voltage ntawm tus cwj mem hluav taws xob digital, yog tias koj siv tus cwj mem hluav taws xob los qhia cov xaim nyob ntawm cov xaim nruab nrab.
Lub hom phiaj tseem ceeb ntawm inductive breakpoint ntsuas cwj mem yog txhawm rau txheeb xyuas qhov tawg hauv kab thaum cov hlau tsis muaj hluav taws xob. Lub suab ntawm tus cwj mem hluav taws xob ntsuas cov hlau nyob yog qhov nrawm heev, thaum lub suab ntawm lub cwj mem hluav taws xob ntsuas cov hlau nruab nrab yog qhov qeeb qeeb.
