Txoj kev txiav txim rau theem kab ntawm lub hwj chim mov los ntawm digital multimeter
Tig lub digital multimeter mus rau 20V (los yog 200V) AC voltage thaiv, tsis txhob txuas cov hlau lead kuaj dub, tuav lub insulating pas nrig ntawm cov hlau kuaj liab nrog koj txhais tes, thiab kov ob lub qhov ntawm lub qhov (socket) fais fab (los yog qhov chaw raug ntawm ob txoj kab hluav taws xob) nrog lub hau ntawm tus cwj mem nyob rau hauv lem. , qhov twg ib qho nrog tus nqi loj dua yog cov kab theem, thiab ib qho nrog tus lej me yog cov kab nruab nrab.
1. Yog tias koj kov ob lub hwj chim jacks nrog tus cwj mem liab, ob qhov kev ntsuas qhov tseem ceeb nyob ze thiab kev nyeem ntawv loj dua, qhia tias cov xaim nruab nrab yog qhib rau hauv av, thiab AC voltage kuj yog induced vim lub nruab nrab hlau yog nyob ze rau ntawm theem xaim.
2. Kev kuaj xyuas cov theem xaim nrog cov voltmeter digital kuj muaj qhov zoo ntawm kev txiav txim kom raug yam tsis muaj kev puas tsuaj rau lub rwb thaiv tsev sheath.
Ntev npaum li tus cwj mem liab siv los kov cov tawv nqaij sab nraud ntawm ob lub xov hlau nyob rau hauv lem, cov xaim nrog kev nyeem ntawv loj dua yog cov theem hlau.
Txij li thaum lub taub ntawm tus cwj mem tsis kov cov xov hlau sab hauv, qhov induced voltage kuj tsis muaj zog, yog li nws yog qhov zoo dua los xaiv 2V AC voltage ntau ntawm cov digital multimeter.
Yuav kho thiab hloov qhov chaw ntawm Multimeter li cas
1. DC tam sim no ib feem
Kev teeb tsa ntawm lub kauj txav yuav tsum yog qhov tseeb, thiab yuav tsum tsis muaj cov tshuaj ferromagnetic hauv qhov sib txawv txav. Yog hais tias lub shunt resistor yog burnt tawm, nws yuav tsum tau hloov raws li tus nqi cim nyob rau hauv daim duab Circuit Court.
Yog tias qhov rhiab heev ntawm lub taub hau saib yog siab, nws tuaj yeem demagnetized, cov plaub hau tuaj yeem hloov pauv, lossis lub nplhaib nres tuaj yeem rov ua dua.
Ntxuav cov kev sib tiv tauj ntawm qhov hloov pauv hloov, thiab rov ua dua rau desoldering lossis tsis muaj zog soldering.
2. DC voltage ib feem
Kev kho thiab kho ntawm DC voltage Circuit Court tsuas yog ua tau tom qab hloov kho tam sim no. Thaum lub sij hawm hloov kho, nws yog nqa tawm ib kauj ruam ntawm kev txwv me me mus rau qhov loj txwv. Kev tawm tsam pej xeem cuam tshuam nrog DC tam sim no tsis tuaj yeem hloov kho.
3. AC voltage ib feem
Kev hloov pauv ntawm AC voltage feem ntau yog nyob rau hauv cov khoom siv hluav taws xob, xws li cov khoom siv hluav taws xob rectifier tawg, kev puas tsuaj, thiab kev thim rov qab. Thaum hloov, xaiv ib lub raj nrog cov yam ntxwv ze rau qhov qub. Ib yam li ntawd, txhua yam ntsig txog DC tam sim no thiab DC voltage tsis tuaj yeem hloov kho.
4. Kev tiv thaiv ib feem
Hloov lub roj teeb yog tias nws qis. Yog tias muaj xeb ntawm qhov chaw tiv tauj, ntxuav nws. Yog tias tsim nyog, maj mam xuab zeb nrog cov ntawv xuab zeb zoo thiab siv ib txheej nyias ntawm Vaseline.
Cov khoom siv hluav taws xob yuav tsum muaj qhov elasticity txaus, thiab nws yuav tsum tau hloov kho los ntawm R * 1 iav mus rau qhov siab tshaj plaws iav, thiab txhua qhov kev tiv thaiv cuam tshuam rau lub voj voog tam sim no thiab qhov hluav taws xob tsis raug tso cai rov kho dua.
