Yuav ua li cas siv lub multimeter los ntsuas seb lub Circuit Court yog grounded nrog cov ntaub ntawv tsis kam
Yuav ua li cas siv ib tug multimeter los ntsuas seb lub Circuit Court yog grounded nrog ib tug tiv thaiv iav. Ua ntej, tsis hais txog kev ntsuas kab lossis khoom siv, koj yuav tsum ntsuas qhov ntsuas hluav taws xob ua ntej 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 ib tug ntaus ntawv nrog capacitive reactance, koj yuav tsum xub tso nws ua ntej kom paub tseeb tias Safe thiab tsis muaj voltage; tom qab ntawd kho cov iav ntawm lub multimeter mus rau 2000 megohm iav, ib qho kawg ntawm cov khoom siv lead ua kov lub hauv av los yog lub plhaub hlau ntawm cov khoom siv, thiab lwm qhov kev sim cov hlau lead kov qhov qub them tus neeg xyuas pib ntawm cov khoom siv lossis cov kab, yog tias qhov kev tiv thaiv tsawg dua 0.5 megohm, nws yog av. Feem ntau, cov khoom tiv thaiv xau ntau dua 0.5 megohm thiab 30 mA 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 ntawm cov khoom siv lossis kab lossis ntau yam kev xav tau.
Nyob rau hauv lub neej niaj hnub, raws li rau ntau yam ntawm circuits, kuv tsis paub hais tias Circuit Court uas koj xa mus. Muaj cov hluav taws xob hluav taws xob, hluav taws xob nyiaj hluav taws xob rau kev xa hluav taws xob, thiab lub cev muaj zog. Cia peb coj peb lub voj voog uas nquag siv los ua piv txwv los tham txog yuav ua li cas Siv multimeter los ntsuas seb nws puas yog av.
1. Electronic Circuit Court, nyob rau hauv ib txwm muaj xwm txheej, ntsuas hluav taws xob Circuit Court xaiv universal
Lub iav ntawm lub 'meter' yog qhov siab tshaj plaws ntawm 10k iav. Lub sijhawm no, qhov ntsuas qhov ntsuas tsis zoo yuav luag ze rau 10K, tus taw tes txav me ntsis, thiab tom qab ntawd cov kev xeem coj tau thim rov qab rau kev ntsuas. Qee qhov kev ntsuas hluav taws xob yuav txawv tom qab thim rov qab, thiab qhov sib txawv yuav me me, vim tias hauv cov khoom siv hluav taws xob hauv hluav taws xob, txhawm rau tiv thaiv kev cuam tshuam ntau zaus, cov capacitors ntau zaus raug teeb tsa rau hauv av, yog li nws yog ib txwm muaj qee yam. nqi rau av. Yog li ntawd, nws feem ntau ua rau tib neeg xav loog. Hom Circuit Court no tsis tuaj yeem ntsuas nrog lub shaker, uas yuav ua rau cov khoom siv hluav taws xob puas.
2. Qhov hluav taws xob xa hluav taws xob Circuit Court, coj lub teeb pom kev hauv tsev ua piv txwv. Ua ntej ntsuas, thawj zaug tua lub hwj chim hloov, thiab tib lub sijhawm tua cov keyboards ntawm tag nrho cov khoom siv hluav taws xob, thiab tom qab ntawd ntsuas qhov xwm txheej hauv av. Yog hais tias qhov ntsuas Circuit Court raug thaiv los ntawm ib tug multimeter Qhov kev tiv thaiv rau hauv av, qhov tsis kam ntawm cov hlau nyob thiab cov hlau nruab nrab yuav tsum tsis muaj qhov kawg. Txawm hais tias lub multimeter yog siv los ntsuas qhov Circuit Court nrog 2 megohm thaiv, nws nyob deb ntawm qhov txaus, vim hais tias qhov voltage ntawm lub roj teeb stacked nyob rau hauv lub multimeter tsuas yog 9 volts, thiab lub teeb pom kev zoo voltage yog hais txog 22 {{5. }} volts. Yog tias ua tau, nws yog qhov zoo tshaj los siv ib qho 500-volt megohmmeter (hu ua shaker). Qhov ntsuas tsis kam yuav tsum siab tshaj 0.5 megohms kom paub tseeb tias lub voj voog tsis xau.
3. Nws tsis muaj kev nyab xeeb rau kev siv multimeter los ntsuas lub cev muaj zog rau hauv av. Nws kuj tseem yuav tsum tau siv lub ntsuas hluav taws xob 500-volt megohmmeter los ntsuas qhov tsis kam ntawm cov coil Circuit Court rau hauv av. Qhov kev tiv thaiv ntawm lub qhov txhab lub cev muaj zog rau hauv av yuav tsum siab tshaj 10 megohms. Yog li ntawd, txhua lub voj voog muaj cov kev xav tau sib txawv rau qhov kev tiv thaiv tus nqi hauv av, thiab qhov hluav taws xob siab yuav tsum muaj cov nqi rwb thaiv tsev loj rau hauv av.
