Yuav ua li cas siv ib tug multimeter los ntsuas seb lub Circuit Court yog grounded siv ib tug kuj ntau yam
Yuav ua li cas siv ib tug multimeter los ntsuas seb lub Circuit Court yog grounded siv ib tug kuj ntau yam? Ua ntej, tsis hais txog ntawm ib lub voj voog lossis cov cuab yeej ntsuas, qhov voltage yuav tsum tau ntsuas kom muaj kev nyab xeeb thiab tsis muaj hluav taws xob ua ntej ua lwm yam kev ntsuas. Yog hais tias nws yog ib tug capacitor los yog cov khoom siv nrog capacitive reactance, nws yuav tsum raug tso tawm ua ntej txiav txim siab txog kev nyab xeeb thiab tsis muaj hluav taws xob; Tom qab ntawd kho cov iav ntawm multimeter mus rau 2000 megohm iav, nrog rau ib qho kawg ntawm kev sojntsuam nyob rau hauv kev sib cuag nrog lub hauv av los yog lub plhaub hlau ntawm cov khoom, thiab lwm yam kev sojntsuam nyob rau hauv kev sib cuag nrog ib txwm nyob tus neeg xyuas pib ntawm cov khoom siv lossis Circuit Court. Yog tias qhov kev tiv thaiv tsawg dua 0.5 megohm, nws raug suav hais tias yog av. Feem ntau, cov khoom tiv thaiv xau ntau dua 0.5 megohm thiab 30 milliampere yuav tsis tawm mus rau kev tiv thaiv, yog li nws feem ntau xav tias cov kab lossis cov khoom siv tsis yog hauv av. Tab sis nws kuj nyob ntawm qhov ua haujlwm voltage lossis ntau yam kev xav tau ntawm cov khoom siv lossis Circuit Court.
Nyob rau hauv lub neej niaj hnub, raws li rau ntau yam ntawm circuits, kuv tsis paub tias hom Circuit Court koj xa mus. Muaj cov hluav taws xob hluav taws xob, hluav taws xob hluav taws xob uas thauj hluav taws xob, thiab hluav taws xob hluav taws xob circuits. Siv peb lub voj voog uas nquag siv los ua piv txwv, cia peb tham txog yuav ua li cas siv lub tshuab hluav taws xob multimeter los ntsuas av.
1, Electronic circuits, feem ntau, ntsuas hluav taws xob circuits yuav tsum yog universal
Lub iav ntawm lub 'meter' yog qhov siab tshaj plaws iav ntawm 10k. Lub sijhawm no, ntsuas qhov ntsuas tsis kam yog yuav luag 10K. Lub pointer txav me ntsis, thiab tom qab ntawd cov kev sojntsuam tau hloov pauv rau kev ntsuas. Qee cov cuab yeej hluav taws xob yuav muaj qhov sib txawv tom qab sib pauv, ua rau muaj qhov sib txawv tsawg dua. Nyob rau hauv hluav taws xob circuits, high-frequency capacitors yog ntsia los tiv thaiv high-frequency cuam tshuam, yog li nws yog ib txwm muaj ib tug tej yam nqi ntsuas rau hauv av. Yog li ntawd, nws tuaj yeem ua rau tib neeg txhais tes thaum lub sijhawm ib txwm muaj, thiab qhov Circuit Court no tsis tuaj yeem ntsuas nrog megger, uas tuaj yeem ua rau cov khoom siv hluav taws xob puas.
2, Rau cov khoom siv hluav taws xob sib txuas, siv cov teeb pom kev hauv tsev ua piv txwv, ua ntej ntsuas, lub hwj chim hloov yuav tsum raug txiav ua ntej, thiab cov keyboards ntawm txhua lub cuab yeej hluav taws xob yuav tsum raug txiav. Tom qab ntawd, qhov xwm txheej hauv av yuav tsum tau ntsuas. Yog hais tias ib tug multimeter yog siv los ntsuas qhov tsis kam ntawm Circuit Court rau hauv av, qhov kev tiv thaiv ntawm txoj kab nyob thiab xoom kab yuav tsum yog infinite. Txawm hais tias ib tug multimeter yog siv los ntsuas qhov Circuit Court no siv 2 megohm theem, nws yog deb ntawm txaus, Vim hais tias qhov voltage ntawm lub stacked roj teeb nyob rau hauv lub multimeter tsuas yog 9 volts, thiab lub teeb pom kev zoo voltage yog nyob ib ncig ntawm 22 0 volts. . Yog tias ua tau, nws yog qhov zoo tshaj plaws los siv 500 volt megohmmeter (tseem hu ua megohmmeter), thiab qhov ntsuas qhov ntsuas yuav tsum siab dua 0 lossis 5 megohms kom ntseeg tau tias lub voj voog tsis xau hluav taws xob.
3, Nws tsis pom zoo kom siv lub multimeter los ntsuas lub cev muaj zog rau hauv av. Ib yam li ntawd, 500 volt megohmmeter yuav tsum tau siv los ntsuas qhov kev tiv thaiv ntawm cov coil Circuit Court rau hauv av. Qhov kev tiv thaiv ntawm lub coil Circuit Court rau hauv av yuav tsum muaj ntau dua 05 megohms kom pom tias muaj kev nyab xeeb. Yog hais tias nws yog ib tug tshiab qhov txhab lub cev muaj zog coil, qhov kev tiv thaiv rau hauv av yuav tsum siab tshaj 10 megohms. Yog li txhua yam ntawm Circuit Court muaj cov kev xav tau sib txawv rau qhov kev tiv thaiv hauv av, thiab qhov yuav tsum tau muaj qhov hluav taws xob siab muaj qhov kev tiv thaiv ntau dua rau hauv av.
