6 yam yuav tsum nco ntsoov thaum siv multimeter
Multimeter yog ib qho khoom siv ntau yam, ntau qhov ntsuas ntsuas. Cia peb tham txog cov teeb meem koj yuav tsum xav txog thaum xaiv ib lub multimeter.
1. Muaj nuj nqi: Xaiv raws li cov kev cai tshwj xeeb thaum siv.
2. Ntau yam thiab ntau yam: Digital multimeters muaj ntau yam, tab sis lawv qhov ntau yam muaj qhov tseeb tshaj plaws. Ntau cov multimeters muaj qhov tsis siv neeg ntau yam ua haujlwm, tshem tawm qhov xav tau los hloov kho qhov ntau, ua kev ntsuas yooj yim, nyab xeeb thiab nrawm. Kuj tseem muaj ntau cov digital multimeters nrog ntau tshaj qhov muaj peev xwm. Thaum ntsuas tus nqi siab tshaj qhov ntau tab sis tseem tsis tau mus txog qhov siab tshaj plaws zaub, tsis tas yuav hloov qhov ntau, yog li txhim kho qhov tseeb thiab daws teeb meem.
3. Qhov tseeb: Qhov kev ua yuam kev siab tshaj plaws uas tso cai los ntawm digital multimeter nyob ntawm tsis yog ntawm nws qhov kev hloov pauv lub sijhawm yuam kev, tab sis kuj nyob ntawm nws qhov yuam kev ruaj khov. Thaum xaiv, koj kuj yuav tsum tau saib cov kev cai rau kev ruaj ntseg yuam kev thiab linear yuam kev, thiab seb qhov kev daws teeb meem raws li qhov yuav tsum tau ua. Rau cov multimeters digital dav dav, yog qhov yuav tsum tau muaj yog 0.0005 txog 0.002, tsawg kawg yog 61 tus lej yuav tsum tau muab tso tawm; 0.005 txog 0.01, tsawg kawg yog 51 tus lej yuav tsum tau tso tawm; 0.02 txog 0.05, tsawg kawg yog 41 tus lej yuav tsum tau tso tawm; 0.1 Hauv qab no, tsawg kawg 31 tus lej yuav tsum tau muab tso tawm.
4. Input resistance thiab xoom tam sim no: Tsis tshua muaj input tsis kam thiab siab xoom tam sim no ntawm digital multimeter yuav ua rau kev ntsuas yuam kev. Tus yuam sij yog nyob ntawm qhov txwv tus nqi tso cai los ntawm lub ntsuas ntsuas, uas yog, qhov kev tiv thaiv sab hauv ntawm lub teeb liab qhov chaw. Thaum lub teeb liab qhov chaw impedance siab, ib qho cuab yeej nrog siab input impedance thiab qis xoom tam sim no yuav tsum raug xaiv kom nws lub hwj chim tuaj yeem tsis quav ntsej.
5. Series hom kev tsis lees paub piv thiab hom kev tsis lees paub qhov piv: Thaum muaj ntau yam cuam tshuam xws li hluav taws xob teb, sib nqus teb thiab ntau lub suab nrov nrov lossis thaum ntsuas qhov ntev, cov teeb liab cuam tshuam tau yooj yim sib xyaw, ua rau kev nyeem tsis raug. Yog li ntawd, cov txiaj ntsig yuav tsum tau txiav txim siab raws li kev siv ib puag ncig. Xaiv ib qho cuab yeej nrog txoj hlua siab thiab hom kev tsis lees paub qhov sib piv. Tshwj xeeb tshaj yog thaum ua cov kev ntsuas siab, koj yuav tsum xaiv lub digital multimeter nrog tiv thaiv davhlau ya nyob twg G, uas tuaj yeem cuam tshuam ntau hom kev cuam tshuam zoo.
6. Daim ntawv qhia thiab lub hwj chim: Daim ntawv tso saib ntawm lub tshuab digital multimeter tsis txwv rau cov lej, tab sis tseem tuaj yeem tso cov kab kos, ntawv nyeem thiab cov cim los pab txhawb kev soj ntsuam ntawm qhov chaw, kev ua haujlwm thiab kev tswj hwm. Raws li sab nraud qhov ntev ntawm nws cov khoom siv, nws tuaj yeem muab faib ua plaub pawg: me, nruab nrab, loj thiab ultra-loj.
