Qhov sib txawv ntawm kev daws teeb meem thiab kev daws teeb meem ntawm Digital Multimeters
Multimeter tuaj yeem hu ua multimeter, thiab tau kawg, digital multimeter tuaj yeem hu ua digital multimeter. Nws lub npe Askiv yog DMM, thiab tam sim no nws yog ib qho cuab yeej siv dav siv. Lub multimeter digital muaj peev xwm ua kom pom cov txiaj ntsig ntsuas ncaj qha hauv daim ntawv digital. Nws tuaj yeem ntsuas tsis tau tsuas yog ntau hom tam sim no thiab voltage, tab sis kuj ntsuas capacitance, tsis kam, txheeb xyuas ntau yam diodes, thiab kuaj xyuas lawv qhov zoo, thiab lwm yam. Tom ntej no, peb yuav qhia txog cov haujlwm tseem ceeb ntawm multimeter - qhov sib txawv ntawm kev daws teeb meem thiab kev daws teeb meem. Cia peb kawm qee qhov kev paub ua ke nrog tus editor ~
Kev daws teeb meem yog lub peev xwm ntawm digital multimeter kom paub qhov txawv qhov tsawg kawg nkaus ntawm kev hloov pauv. Nws qhia txog qhov rhiab heev ntawm qhov ntsuas, thiab qhov kev daws teeb meem ntawm qhov ntsuas nws txawv ntawm qhov sib txawv. Cov cuab yeej muaj qhov kev daws teeb meem siab tshaj plaws ntawm qhov qis tshaj plaws, uas txhais tau tias yog qhov kev daws teeb meem ntawm digital multimeter.
Qee zaum, qhov kev daws teeb meem siab tshaj plaws kuj tseem hu ua rhiab heev ntawm qhov ntsuas. Qhov kev daws teeb meem ntawm cov cuab yeej digital nce nrog cov naj npawb ntawm cov khoom siv.
Qhov kev daws teeb meem kuj tuaj yeem sawv cev los ntawm kev daws teeb meem. Kev daws teeb meem yog hais txog qhov feem pua ntawm qhov tsawg kawg nkaus thiab tus lej siab tshaj plaws uas cov cuab yeej tuaj yeem tso tawm. Piv txwv li, DT8900 31/2-digit digital multimeter tuaj yeem tso saib tus lej tsawg kawg ntawm 1 thiab tus lej siab tshaj plaws ntawm 1999, yog li qhov kev daws teeb meem sib npaug li 1/1999 ≈ 0.05%.
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 ntsis thiab 33/4 ntsis cov cuab yeej yog tib yam, ob qho tib si ntawm 100 μ V, tab sis lawv cov kev daws teeb meem sib txawv.
Kev daws teeb meem thiab qhov tseeb yog ob lub ntsiab lus sib txawv. Resolution characterizes lub peev xwm los "paub" me me teeb liab, uas yog, nws "rhiab heev", thaum qhov tseeb qhia tau hais tias "qhov tseeb" ntawm kev ntsuas, uas yog, qhov℃ntawm qhov sib xws ntawm qhov ntsuas qhov tshwm sim thiab tus nqi tseeb. Tsis muaj qhov tsim nyog txuas ntawm ob thiab lawv tsis tuaj yeem tsis meej pem. Qhov tseeb, kev daws teeb meem tsuas yog cuam tshuam nrog cov naj npawb ntawm cov khoom siv ntawm cov cuab yeej, thaum qhov tseeb yog cuam tshuam nrog kev ua yuam kev thiab kev ua kom muaj nuj nqis ntawm cov khoom siv hauv A / D thiab kev ua haujlwm ntawm lub ntsuas ntsuas. Hauv kev siv tswv yim, qhov tseeb dua thiab rhiab heev tsis tas yuav zoo dua. Nws kuj yog nyob ntawm cov khoom tshwj xeeb raug sim, txwv tsis pub nws yog qhov pov tseg.
