Yuav ua li cas siv cov digital caw kom ntsuas qhov zoo ntawm cov cua txias capacitors
Peev hluav taws xob yog ib qho ntawm cov hluav taws xob feem ntau siv hluav taws xob siv hluav taws xob. Cov tsos thiab cov cim hluav taws xob ntawm lub capacitor yog qhia hauv daim duab. Cov cim qhia ntawv rau capacitors yog "C". Peev hluav taws xob feem ntau yog suav nrog cov hlau hluav taws xob, dielectric txheej, thiab electrode ua, thiab ob electrodes yog insulated los ntawm txhua lwm yam. Yog li ntawd, nws muaj qhov ua tau zoo ntawm "kev sib txuas lus ncaj qha".
Taw qhia ncaj qha nrog catchcab hom
Some digital multimeters have the function of measuring capacitance, and their ranges are divided into five levels: 2000p, 20n, 200n, 2 μ, and 20 μ. Thaum ntsuas, ob lub pins ntawm lub ceg kaw tau tuaj yeem tso rau hauv CC tso rau ntawm lub ntsuas phoo ntawv tuaj yeem nyeem tom qab xaiv cov khoom siv tsim nyog. 2000p ntau, haum rau kev ntsuas hluav taws xob tsawg dua 2000pf; 20n ntau, haum rau kev ntsuas ntsuas hluav taws xob ntawm 2000pf thiab 20nf; 200n ntau, haum rau kev ntsuas ntsuas ntawm 20NF thiab 200nf; 2 μ qib, haum rau kev ntsuas kev nyab xeeb ntawm 200NF thiab 2 μ f; 20 μ f yog rau kev ntsuas ntsuas ntawm 2 μ f thiab 20 μ F.
Kev paub tau qhia tias qee tus qauv ntawm cov qauv digital (xws li DT890B +) ntsuas qhov tseem ceeb hauv qab 50 hauv qab 20pf muaj yuav luag tsis muaj tus nqi siv. Txij ntawm no, txoj hau kev ntawm series tuaj yeem siv los ntsuas cov peev txheej me me. Cov txheej txheem yog thawj zaug pom lub capacitor nrog lub peev xwm ntawm 220pf, ntsuas nws lub vijtsam me me tau sim nrog nws kom ntsuas nws tag nrho cov peev txheej C2. Qhov sib txawv ntawm ob (c 1- C2) yog lub peev xwm ntawm lub capacitor me me los kuaj. Hom qauv no yog qhov tseeb heev rau kev ntsuas qhov ntsuas me me ntawm 1-20 pf.
Ntes nrog hom tsis kam
Kev xyaum tau ua pov thawj tias tus txheej txheem them nyiaj tuaj yeem siv tau siv cov kev hloov pauv digital nyob rau hauv discrete digital cov digital. Yog tias ntsuas ntsuas ntawm cov digital multimeter yog n lub sij hawm ib ob, tom qab ntawd thaum lub sij hawm saib xyuas kev nyeem ntawv ntxiv tuaj yeem pom txhua thib ob. Raws li cov zaub muaj txiaj ntsig ntawm cov digital motimeter, nws muaj peev xwm kuaj tau qhov zoo ntawm capacitors thiab kwv yees qhov loj me ntawm lawv lub peev xwm. Cov hauv qab no yog ib txoj kev siv cov digital mottimeter los tshawb xyuas capacitors nyob rau hauv lub tswv yim muaj ntau, uas yog ntawm cov tswv yim tswv yim rau cov khoom uas tsis tau teeb tsa lub peev xwm capactrance.
