Qhov sib txawv ntawm kev daws teeb meem thiab kev daws teeb meem ntawm digital multimeter
Multimeter tuaj yeem hu ua multimeter. Tau kawg, digital multimeter kuj tseem hu ua digital multimeter. Nws lub npe lus Askiv yog DMM, thiab nws kuj yog ib qho cuab yeej siv dav siv tam sim no. Cov multimeter digital tuaj yeem tso ncaj qha tso saib tus nqi ntsuas hauv daim ntawv digital. Nws tuaj yeem ntsuas tsis tau tsuas yog ntau yam tam sim no thiab voltages, tab sis kuj ntsuas capacitance, tsis kam, txheeb xyuas ntau yam diodes, thiab kuaj lawv qhov zoo, thiab lwm yam. Tom ntej no, peb tsuas yog qhia cov haujlwm yooj yim ntawm multimeter - qhov sib txawv ntawm kev daws teeb meem thiab kev daws teeb meem. Cia peb kawm qee qhov kev paub nrog tus editor ~
Qhov kev daws teeb meem yog lub peev xwm ntawm digital multimeter kom paub qhov txawv qhov hloov me me ntawm qhov ntsuas tus nqi. Nws qhia txog qhov rhiab heev ntawm lub 'meter'. Ntawm qhov sib txawv, qhov kev daws teeb meem ntawm lub 'meter' txawv. Lub 'meter' muaj qhov kev daws teeb meem siab tshaj plaws ntawm qhov qis tshaj plaws, thiab qhov kev daws teeb meem siab tshaj plaws yog txhais raws li qhov kev daws teeb meem ntawm digital multimeter.
Qee zaum, qhov kev daws teeb meem siab tshaj plaws kuj yog hu ua rhiab heev ntawm qhov ntsuas. Qhov kev daws teeb meem ntawm cov cuab yeej digital nce nrog qhov nce ntawm cov lej tso saib.
Qhov kev daws teeb meem kuj tuaj yeem hais los ntawm kev daws teeb meem. Kev daws teeb meem yog hais txog qhov feem pua ntawm tus lej tsawg tshaj plaws thiab tus lej loj tshaj plaws uas lub ntsuas tau pom. Piv txwv li: DT{{0}}/2-digit digital multimeter, tus lej tsawg tshaj plaws uas tuaj yeem pom yog 1, thiab tus lej loj tshaj plaws yog 1999, yog li qhov kev daws teeb meem sib npaug rau 1/1999≈ 0.05 feem pua.
Nws yuav tsum tau taw qhia tias muaj qhov sib txawv ntawm kev daws teeb meem thiab kev daws teeb meem;
Piv txwv li, qhov kev daws teeb meem ntawm 31/2-digit thiab 33/4- tus lej ntsuas yog tib yam, ob qho tib si yog 100μV, tab sis qhov kev daws teeb meem ntawm peb qhov sib txawv.
Kev daws teeb meem thiab qhov tseeb yog ob lub ntsiab lus sib txawv. Qhov kev daws teeb meem sawv cev rau lub peev xwm ntawm lub cuab yeej los "paub" cov cim me me, uas yog, "rhiab heev", thaum qhov tseeb qhia txog "qhov tseeb" ntawm kev ntsuas, uas yog, qhov ntsuas qhov ntsuas qhov ntsuas qhov kev pom zoo nrog tus nqi tseeb. Ob qho no tsis tas yuav muaj feem cuam tshuam thiab tsis tuaj yeem tsis meej pem. Qhov tseeb, qhov kev daws teeb meem tsuas yog cuam tshuam nrog cov lej ntawm cov lej ntawm lub ntsuas, thaum qhov tseeb muaj feem cuam tshuam nrog kev ua yuam kev thiab quantization yuam kev ntawm sab hauv A / D converter thiab kev ua haujlwm hloov pauv ntawm lub ntsuas. Hauv kev siv tswv yim, qhov siab dua qhov tseeb thiab rhiab heev, qhov zoo dua, tab sis kuj nyob ntawm cov khoom tshwj xeeb uas yuav tsum tau ntsuas, txwv tsis pub nws kuj yog pov tseg.
