Yuav ua li cas siv lub nyob xaim lees paub muaj nuj nqi ntawm multimeter
Yuav ua li cas paub qhov txawv ntawm cov xov hlau nyob thiab nruab nrab ntawm lub multimeter, yuav ua li cas siv multimeter nyob hlau kuaj cov ntaub ntawv, thiab yuav ua li cas siv lub multimeter nyob hlau iav hais txog cov lus qhia txog kev siv cov multimeter nyob hlau paub txog kev ua haujlwm
Cov neeg siv hluav taws xob tau siv cov cwj mem hluav taws xob rau kev saib xyuas thiab kev daws teeb meem, tab sis tam sim no lawv siv multimeters. Qhov tseeb, tsis tsuas yog cov cwj mem hluav taws xob tuaj yeem paub qhov txawv ntawm cov xov hlau nyob thiab nruab nrab, tab sis multimeters kuj tuaj yeem paub qhov txawv ntawm cov xov hlau nyob thiab nruab nrab. Tsuas yog ntau tus neeg tsis paub txog nws
Tus txheej txheem ntawm kev paub qhov txawv nyob thiab nruab nrab ntawm cov xov hlau nrog lub cwj mem hluav taws xob
Cov cwj mem hluav taws xob zoo ib yam: yav dhau los, thaum cov kws kho hluav taws xob kho thiab kuaj xyuas qhov tsis raug, ib tus cwj mem hluav taws xob tau tuav lub ntiaj teb. Cov cwj mem hluav taws xob zoo sib txawv ntawm cov xov hlau nyob thiab nruab nrab, thiab cov neeg feem coob paub tias lawv tuaj yeem ntsuas ncaj qha nyob thiab nruab nrab ntawm cov xov hlau nrog lub cwj mem hluav taws xob. Yog hais tias tus cwj mem hluav taws xob teeb, nws yog hu ua nyob hlau, thiab yog tias nws tsis teeb, nws yog hu ua neutral wire.
Digital cwj mem: Txij li thaum lub sij hawm tuaj txog ntawm cov cwj mem, cov cwj mem zoo tib yam tsis tshua muaj siv. Cov cwj mem digital muaj cov haujlwm ntau dua, xws li kuaj xyuas cov xov hlau tawg thaum tsis siv, sib txawv ntawm cov xov hlau nruab nrab thiab nyob, qhov txawv ntawm qhov zoo thiab qhov tsis zoo ntawm DC cov roj teeb, thiab txiav txim siab seb cov xov hlau puas luv luv. Yog li ntawd, cov cwj mem zoo tib yam tau maj mam raug txiav tawm. Txhawm rau paub qhov txawv ntawm cov xov hlau nyob thiab nruab nrab nrog cov cwj mem digital, cov xov hlau nyob thiab nruab nrab tuaj yeem ntsuas ncaj qha nrog tus cwj mem, thiab qhov hluav taws xob ntawm tus cwj mem tuaj yeem pom. Yog tias qhov siab tshaj plaws qhov hluav taws xob tso tawm yog 220V, nws ua pov thawj tias yog cov hlau nyob. Yog hais tias qhov siab tshaj plaws qhov hluav taws xob tso tawm yog 12V lossis 36V, nws ua pov thawj tias yog cov xaim nruab nrab
Inductive breakpoint tester: Lub luag haujlwm tseem ceeb ntawm lub breakpoint tester yog txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhuam nws Lub breakpoint tester paub qhov txawv ntawm cov hlau nyob thiab cov hlau nruab nrab, thiab siv lub breakpoint tester los ntsuas cov hlau nyob thiab cov hlau nruab nrab nyias nyias. Thaum ntsuas cov hlau nyob, lub suab tso tawm los ntawm tus ntsuas ntsuas tawg yog qhov nrawm heev, thiab thaum ntsuas cov hlau nruab nrab, lub suab tawm los kuj qeeb.
Txoj kev sib txawv ntawm cov xov hlau nyob thiab nruab nrab nrog lub multimeter
Rau multimeters, muaj ib txwm muaj AC voltage ntau, uas tuaj yeem ntsuas qhov voltage ntawm AC zog. Thaum ntsuas qhov voltage, siv liab thiab dub sojntsuam muab tso rau ntawm cov nyob thiab nruab nrab ntawm cov xov hlau raws li qhia nws qhov voltage. Txawm li cas los xij, thaum ntsuas qhov voltage, nws yuav tsum tau muab tso rau hauv qhov tsim nyog. Piv txwv li, thaum ntsuas tsev 220V thiab 380V voltage, lub multimeter yuav tsum muab tso rau hauv AC voltage ntau ntawm 700V.
Rau AC voltage theem, tsis tsuas yog ntsuas voltage, tab sis kuj nyob thiab nruab nrab ntawm cov xov hlau yuav txawv. Tsuas yog ntau tus neeg tsis paub. Ib tug multimeter distinguishes ntawm nyob thiab nruab nrab nyob ntawm tej. Muab lub multimeter nyob rau hauv AC voltage ntau, muab cov dub sojntsuam ib sab, thiab siv lub liab sojntsuam ntsuas cov nyob thiab nruab nrab nyob ntawm tej cais. Saib cov lej ntawm lub multimeter. Tus naj npawb loj dua, cov xov hlau nyob, thiab tus lej tsawg dua, cov hlau tsis huv. Yog tias koj xav tias cov lej tsis pom tseeb, koj tuaj yeem kho qhov ntau kom tsawg dua, kom cov lej yuav pom tseeb dua.
