Yuav ua li cas siv cov kev tiv thaiv ntau yam ntawm digital multimeter los ntes cov capacitors
1.Kev ntsuas kev ua haujlwm
Teem lub digital multimeter mus rau qhov tsim nyog tsis kam, thiab cov ntawv xeem liab thiab cov tshuaj ntsuam dub coj mus kov ob tug ncej ntawm capacitor Cx nyob rau hauv qhov kev xeem feem. Lub sijhawm no, tus nqi tso tawm yuav maj mam nce los ntawm "000" kom txog thaum lub cim overflow "1" tshwm. Yog tias nws ib txwm qhia "000", nws txhais tau tias muaj luv luv hauv lub capacitor; Yog hais tias nws ib txwm qhia txog kev ntws tawm, nws yuav yog tias cov hluav taws xob sab hauv ntawm lub capacitor yog qhib Circuit Court, lossis nws yuav yog qhov kev xaiv tsis zoo. Thaum kuaj xyuas lub electrolytic capacitor, thov nco ntsoov tias cov hlau lead kuaj liab (zoo them) txuas nrog qhov zoo electrode ntawm lub capacitor, thiab cov hlau lead kuaj dub txuas nrog qhov tsis zoo electrode ntawm lub capacitor.
2. Kev ntsuas txoj cai
Kev ntsuas lub hauv paus ntsiab lus ntawm kev ntsuas capacitor siv cov iav tiv thaiv yog pom hauv daim duab {{0}}(b). Thaum lub sij hawm ntsuas, qhov zoo fais fab mov tsub lub capacitor Cx nyob rau hauv kev sim los ntawm tus qauv resistor R0. Thaum lub sijhawm pib them, "000" tshwm vim Vc=0. Raws li Vc maj mam nce, tus nqi tso tawm nce. Thaum Vc=2VR, lub ' meter ' pib pom cov cim hla "1". Lub sij hawm them nqi t yog lub sij hawm xav tau rau tus nqi zaub hloov los ntawm "000" kom dhau. Lub sijhawm no tuaj yeem ntsuas nrog lub quartz meter.
3. Ntsuas cov ntaub ntawv siv DT830 digital multimeter los kwv yees cov peev txheej
Thaum siv DT830 digital multimeter los kwv yees lub peev xwm ntawm lub capacitor xws li 0.1μF mus rau ntau txhiab microfarads, koj tuaj yeem xaiv qhov kev tawm tsam raws li Table 5-1. Lub rooj muab qhov ntau ntawm kev ntsuas lub peev xwm thiab lub sijhawm them nqi sib xws. Cov ntaub ntawv teev nyob rau hauv lub rooj kuj muaj cov nqi siv rau lwm cov qauv ntawm digital multimeters.
Lub hauv paus ntsiab lus ntawm kev xaiv qhov kev tiv thaiv ntau yam yog: thaum lub capacitance me me, qhov siab kuj yuav tsum tau xaiv, thiab thaum lub capacitance loj, qhov tsawg kuj yuav tsum tau xaiv. Yog tias koj siv qhov kev teeb tsa siab los kwv yees lub peev xwm loj, cov txheej txheem them nqi yuav qeeb heev thiab lub sijhawm ntsuas yuav kav ntev; Yog tias koj siv qhov chaw qis qis los xyuas lub peev xwm me me, lub ntsuas hluav taws xob yuav ib txwm tso tawm thiab koj yuav tsis tuaj yeem pom cov txheej txheem hloov vim tias lub sijhawm them nyiaj luv heev. .
3. Siv qhov ntsuas hluav taws xob los ntsuas
Siv lub tshuab hluav taws xob digital los txheeb xyuas cov capacitors ntawm DC qhov hluav taws xob ntau yog qhov kev ntsuas tsis ncaj. Txoj kev no tuaj yeem ntsuas qhov muaj peev xwm me me ntawm 220pF txog 1μF, thiab tuaj yeem ntsuas qhov ntws tawm tam sim no ntawm lub capacitor.
