Internal kuj thiab txheem degree ntawm multimeter tam sim no ntau yam
Hais txog qhov kev tiv thaiv sab hauv thiab cov txheej txheem ntawm qhov tam sim no ntau yam ntawm multimeter, kev tiv thaiv sab hauv ntawm txhua lub iav ntawm multimeter's DC tam sim no ntau yam yog: 500mA ~ 1.5 ohms, 100mA ~ 7.5 ohms, thiab qhov tseeb yog 2.5. Qhov tseeb ntawm 2.5 txhais tau hais tias qhov kev ntsuas qhov yuam kev ntawm multimeter yog qhov zoo lossis tsis zoo. 2.5 feem pua.
Kev ua haujlwm sab hauv ntawm txhua lub iav ntawm DC tam sim no ntau yam ntawm multimeter yog: 500mA ~ 1.5 ohms, 100mA ~ 7.5 ohms, thiab qhov tseeb yog 2.5 qib.
Qhov tseeb theem 2.5 txhais li cas?
Cov cuab yeej raug=(qhov yuam kev ntau tshaj plaws / ntsuas qhov ntau) * 100 feem pua ; Qhov tseeb yog 2.5, thiab ntsuas qhov yuam kev ntawm lub multimeter yog ntxiv lossis rho tawm 2.5 feem pua.
Kev suav txheej txheem ntawm multimeter internal kuj:
Lub ntsiab lus ntawm 500mA ~ 1.5 ohms: Hauv 500mA iav, sab hauv tsis kam ntawm 1.5 ohms txuas nrog hauv series;
Lub ntsiab lus ntawm 100mA ~ 7.5 ohms: Hauv 100mA iav, sab hauv tsis kam ntawm 7.5 ohms txuas nrog hauv series;
Rau kev tiv thaiv sab hauv ntawm multimeter, qhov loj dua sab hauv ntawm cov ntaub ntawv hluav taws xob, qhov zoo dua, thiab qhov me me ntawm cov ntaub ntawv tiv thaiv sab hauv, qhov zoo dua.
Qhov thib ob, qhov sib txawv ntawm cov multimeter siv cov ntaub ntawv tiv thaiv, cov ntaub ntawv tam sim no thiab cov ntaub ntawv voltage
1. Cov iav tiv thaiv: Siv lub tshuab multimeter ua lub zog thiab lub voltmeter, txuas lub multimeter thiab lub voj voog hauv series, muab qee qhov hluav taws xob rau hauv Circuit Court nyob rau hauv kev sim, thiab tom qab ntawd coj mus kuaj tam sim no ntawm Circuit Court tom qab ntxiv load. Yog li, tus nqi tiv thaiv ntawm sab Circuit Court yog xam. (Ceeb Toom: Tsis txhob ntxiv lub zog rau lub voj voog thaum lub sijhawm kuaj)
2. Tam sim no iav: zoo ib yam li ammeter, txuas lub multimeter nyob rau hauv series mus rau Circuit Court los ua ib lub voj. Lub Circuit Court yog powered. Nco ntsoov sim hauv qhov ntau. Txwv tsis pub nws yog ib qho yooj yim mus hlawv.
3. Cov ntaub ntawv hluav taws xob: zoo ib yam li lub voltmeter, nws txuas nrog nyob rau hauv parallel mus rau 2 terminals ntawm Circuit Court nyob rau hauv kev sim, thiab lub Circuit Court yuav tsum tau powered los ntsuas qhov voltage.
Yog tias koj ntsuas cov hlau ntev heev, koj yuav txiav txim siab li cas?
Puas yog cov xov hlau ntev heev tau muab khi ua ke thiab khaws cia ntawm koj sab? Yog tias tsis yog, nws yuav nyuaj rau ntsuas nrog lub multimeter. Yog tias nws tau muab tso rau ntawm koj sab, txuas 2 qhov kawg ntawm cov pob khoom ntawm cov xov hlau mus rau 2 qhov kev xeem coj ntawm multimeter, thiab multimeter tuaj yeem teeb tsa rau "theem tsis kam" txog 2K.
