Digital Multimeter Measuring Resistance
Ntxig qhov kev xeem coj mus rau hauv "COM" thiab "VΩ" qhov, tig lub pob qhov rooj mus rau qhov yuav tsum tau muaj nyob rau hauv "Ω", thiab txuas qhov kev ntsuam xyuas ua rau cov hlau qhov chaw ntawm ob qhov kawg ntawm cov resistor.
Daim ntawv ceeb toom:
1. Yog tias qhov ntsuas qhov ntsuas tsis zoo tshaj qhov siab tshaj ntawm qhov kev xaiv ntau, nws yuav tso tawm ntau tshaj "1", thiab ntau dua yuav tsum tau xaiv. Rau qhov kev tiv thaiv ntau dua 1MΩ lossis siab dua, nws yuav siv sijhawm ob peb feeb rau kev nyeem ntawv kom ruaj khov. Qhov no yog qhov qub.
2. Thaum tsis muaj kev sib txuas, xws li qhib Circuit Court, lub 'meter' yuav tso saib "1".
3. Thaum kuaj xyuas qhov impedance ntawm kab nyob rau hauv kev sim, xyuas kom meej tias tag nrho cov khoom siv hluav taws xob hauv kab hauv qab kev sim raug tshem tawm thiab tag nrho cov capacitors raug tso tawm. Yog tias muaj cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob khaws cia hauv kab hauv qab kev sim, nws yuav cuam tshuam qhov tseeb ntawm kab impedance xeem.
4. Rau 200MΩ ntau yam ntawm multimeter, muaj 10 tus lej thaum muaj qhov luv luv. Thaum ntsuas qhov tsis kam, cov 10 tus lej no yuav tsum tau muab rho tawm los ntawm kev ntsuas kev nyeem ntawv. Piv txwv li, thaum ntsuas qhov kev tawm tsam, nws tshwm sim li 101.0, thiab 10 tus cim yuav tsum raug rho tawm ntawm 101.0. Qhov tseeb tus nqi ntawm cov ntsuas ntsuas yog 100.0, uas yog 100MΩ.
5. Koj tuaj yeem kov qhov kev tawm tsam nrog koj txhais tes thaum ntsuas, tab sis tsis txhob kov ob qho kawg ntawm qhov kev tawm tsam nrog koj txhais tes tib lub sijhawm - tib neeg lub cev yog ib tus neeg xyuas pib nrog kev ua haujlwm siab tab sis qhov loj me.
