Yuav ua li cas paub qhov txawv ntawm cov hlau nyob thiab xoom xaim ntawm multimeter
Txoj kev paub qhov txawv ntawm cov hlau nyob thiab xoom xaim los ntawm hluav taws xob cwj mem
Ordinary electric cwj mem: Rau kev kho hluav taws xob thiab kev daws teeb meem yav dhau los, ib tus cwj mem hluav taws xob tau siv thoob plaws ntiaj teb. Cov cwj mem hluav taws xob zoo tib yam qhia qhov txawv ntawm cov hlau nyob thiab cov xaim nruab nrab. Cov hlau nyob, tus cwj mem hluav taws xob tsis teeb, nws yog cov xaim nruab nrab
Cov cwj mem hluav taws xob digital: Txij li cov cwj mem hluav taws xob digital tau siv, nws tsis tshua siv rau cov cwj mem hluav taws xob zoo tib yam. Rau cov cwj mem hluav taws xob digital, nws muaj ntau txoj haujlwm, xws li tshuaj xyuas cov xov hlau tawg tsis muaj hluav taws xob, paub qhov txawv ntawm cov xov hlau tsis zoo thiab cov xov hlau nyob, paub qhov txawv ntawm qhov zoo thiab qhov tsis zoo ntawm DC roj teeb, thiab txiav txim seb cov xov hlau puas luv luv. Nws yog ok, yog li cov cwj mem hluav taws xob zoo tib yam tau maj mam tshem tawm. Yog tias koj siv tus cwj mem hluav taws xob digital kom paub qhov txawv ntawm cov xaim nyob thiab cov xaim nruab nrab, koj tuaj yeem ntsuas ncaj qha cov hlau nyob thiab cov xaim nruab nrab nrog lub cwj mem hluav taws xob, thiab saib xyuas qhov voltage ntawm cov hluav taws xob digital. Yog tias qhov siab tshaj plaws qhov hluav taws xob tso tawm yog 220V, nws ua pov thawj tias nws yog cov hlau nyob. Yog tias qhov hluav taws xob siab tshaj plaws yog 12V lossis 36V, nws ua pov thawj tias yog cov kab nruab nrab
Inductive breakpoint ntsuas cwj mem: lub luag haujlwm tseem ceeb ntawm tus cwj mem breakpoint yog nrhiav txoj haujlwm ntawm qhov tawg hauv kab tom qab cov hlau tsis muaj zog. Thaum tus cwj mem hluav taws xob ntsuas cov hlau nyob, lub suab kuj nrawm, thiab thaum ntsuas cov hlau nruab nrab, lub suab kuj qeeb.
Tus txheej txheem ntawm kev paub qhov txawv ntawm cov hlau nyob thiab nruab nrab hlau los ntawm multimeter
Rau lub multimeter, yuav muaj AC voltage iav. Rau AC voltage iav, qhov voltage ntawm AC tuaj yeem ntsuas. Thaum ntsuas qhov voltage, siv cov liab thiab dub xeem coj thiab muab tso rau ntawm cov hlau nyob thiab cov hlau nruab nrab feem, thiab nws qhov voltage yuav tshwm sim. Tab sis thaum ntsuas qhov voltage, muab lub multimeter tso rau hauv lub iav tsim nyog, piv txwv li, thaum ntsuas qhov hluav taws xob hauv tsev ntawm 220V thiab 380V, muab lub multimeter tso rau hauv lub iav ntawm AC voltage 700V.
Rau AC voltage ntau, tsis tsuas yog ntsuas qhov hluav taws xob, tab sis kuj tseem muaj cov xaim nyob thiab cov xaim nruab nrab tuaj yeem paub qhov txawv. Nws tsuas yog hais tias ntau tus neeg tsis paub tias lub multimeter distinguishes cov hlau nyob thiab cov hlau nruab nrab. Muab lub tshuab hluav taws xob tso rau ntawm AC voltage txoj hauj lwm, muab cov xim dub coj mus rau ib sab, siv cov hlau kuaj liab los ntsuas cov hlau nyob thiab cov hlau nruab nrab feem, thiab soj ntsuam cov lej ntawm multimeter. Tus lej loj dua yog cov hlau nyob. Tus lej tsawg dua yog tus lej xoom. Yog tias koj xav tias tus lej tsis pom tseeb, koj tuaj yeem kho lub iav kom tus nqi me me, kom tus lej yuav pom tseeb dua.
Rau AC voltage ntau ntawm multimeter, tsis tsuas yog koj tuaj yeem ntsuas qhov hluav taws xob, paub qhov txawv ntawm cov hlau nyob thiab cov xaim nruab nrab, tab sis koj tuaj yeem pom qhov tawg hauv cov hlau.
