Yuav ua li cas siv multimeter los kuaj xyuas cov khoom siv hluav taws xob uas nquag siv?
Thaum twg lub Circuit Court board tsis ua hauj lwm ib txwm thiab lub Circuit Court raug soj ntsuam thiab tsis muaj teeb meem, nws muaj feem xyuam rau cov khoom siv hluav taws xob tawg. Yog tias koj xav kho nws, koj yuav tsum nrhiav cov faulty Cheebtsam thiab hloov nws. Txawm li cas los xij, nrhiav cov khoom tsis raug yog ib txoj haujlwm ua haujlwm thiab tseem muaj qee yam kev txawj. Niaj hnub no, peb yuav qhia koj yuav ua li cas siv lub multimeter los kuaj xyuas qee yam khoom siv hluav taws xob.
Kev kuaj pom tsis kam
Txoj kev ncaj qha tshaj plaws los ntsuas qhov kev tiv thaiv yog siv lub tshuab multimeter kuj rau kev ntsuas. Feem ntau, qhov kev tiv thaiv yog cim nrog qhov tsim nyog tiv thaiv ntau yam, thiab cov kev sojntsuam liab thiab dub txuas nrog ntawm ob qho kawg. Yog tias qhov kev nyeem ntawv kaw, nws yog qhov qub, txwv tsis pub nws yuav puas. Thaum ntsuas kev tiv thaiv loj, nws yog ib qho tseem ceeb kom tsis txhob kov cov liab thiab dub tshuaj ntsuam nrog ob txhais tes. Qhov no tsis yog ib qho kev pheej hmoo ntawm ib qho teeb meem, tab sis los xyuas kom meej qhov tseeb ntawm kev ntsuas kev tiv thaiv. Nws muaj peev xwm kov ib qho ntawm cov kev sojntsuam nrog koj txhais tes.
Potentiometer nrhiav pom
Feem ntau, lub potentiometer muaj peb tus pins. Ua ntej, siv lub multimeter los xaiv qhov kev tawm tsam los ntsuas seb qhov kev tawm tsam ntawm ob ntawm peb tus pins ntawm lub potentiometer yog sib npaug los yog ze rau qhov ntsuas tus nqi ntawm lub potentiometer. Yog tias muaj qhov sib txawv tseem ceeb, nws qhia tias potentiometer puas lawm. Yog hais tias lub multimeter tseem ntsuas ob tus pins ib txwm, ces tig lub potentiometer counterclockwise mus rau qhov chaw ze. Nyob rau ntawm lub sijhawm no, tus nqi kuj yuav tsum tsawg li tsawg tau, thiab tom qab ntawd tig clockwise kom maj mam nce qhov kev tawm tsam, Tig kom txog thaum kawg tus nqi kuj nce mus txog tus nqi tsis kam, ces lub potentiometer yog qhov qub.
Tsau capacitor nrhiav pom
Ntxiv nrog rau kev siv lub tshuab multimeter los xaiv qhov tsim nyog rau kev ntsuas lub peev xwm, qhov kev ua haujlwm kuj tseem tuaj yeem siv rau kev ntsuas. Thaum ntsuas, qhov tsim nyog kuj yuav tsum tau xaiv, thiab ob lub probes yuav tsum tau txuas nrog ob tus pins ntawm lub capacitor. Tus nqi kuj yuav tsum yog infinite. Yog hais tias tus nqi kuj yog 0, lub capacitor yuav puas.
Electrolytic capacitor nrhiav pom
Muaj qhov sib txawv me ntsis hauv txoj kev ntsuas ntawm electrolytic capacitors thiab cov khoom siv ruaj khov. Tau kawg, koj tuaj yeem xaiv siv qib capacitance rau kev kuaj pom. Txhua leej txhua tus paub yuav ua li cas siv cov qib tsis kam rau kev ntsuas. Ua ntej, xaiv cov qib tsim nyog, nrog rau cov liab thiab dub probes kov ob tug ncej ntawm capacitor feem. Lub sijhawm no, tus nqi tso tawm yuav nce los ntawm {{0}} kom txog thaum lub cim hla 1 tshwm. Yog tias 0 ib txwm tso tawm, nws qhia tau hais tias ib qho luv luv Circuit Court nyob rau hauv lub capacitor, Yog hais tias 1 yog ib txwm pom, nws qhia tau hais tias ib tug qhib Circuit Court ntawm lub capacitor ncej, thiab nws kuj muaj peev xwm xaiv ib tug kuj ntau yam uas tsis haum. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias thaum lub sij hawm ntsuas, raws li cov electrolytic capacitor muaj qhov zoo thiab qhov tsis zoo, nws yuav tsum tsis txhob txuas rov qab. Feem ntau, cov hlau lead liab txuas nrog lub anode ntawm lub capacitor (ib qho uas muaj ko taw ntev), cov hlau lead dub txuas nrog lub cathode ntawm lub capacitor (tus uas muaj ko taw luv), thiab lub pointer multimeter yog qhov txawv.
Kev kuaj xyuas inductance
Ib yam li ntawd, xaiv qhov kev tiv thaiv ntau yam ntawm multimeter thiab txuas cov sojntsuam mus rau ob qhov kawg ntawm inductor. Yog tias qhov ntsuas qhov ntsuas tsis kam yog xoom, lub inductor yuav muaj qhov luv luv hauv lub cev. Nyob rau hauv ib txwm muaj xwm txheej, DC tsis kam ntawm qhov ntsuas inductor yog ncaj qha ntsig txog txoj kab uas hla ntawm cov hlau enameled siv rau winding lub inductor coil thiab cov xov tooj ntawm cov hlau tig. Tsuav tus nqi kuj tuaj yeem ntsuas tau, qhov inductor tuaj yeem suav tias yog qhov qub.
Diode nrhiav pom
Teem lub multimeter mus rau qhov nrhiav pom diode txoj hauj lwm, txuas cov hlau lead liab mus rau lub anode ntawm diode, thiab cov hlau lead dub mus rau cathode ntawm diode. Yog hais tias qhov hluav taws xob poob ntawm lub diode tshwm rau ntawm lub vijtsam zaub (feem ntau yog {{{0}}}.5 rau silicon raj thiab 0.2 rau germanium raj), nws qhia tau hais tias lub diode yog qhov qub. Hloov cov hlau lead, thiab yog tias lub vijtsam zaub qhia 1, nws yog qhov qub. Txwv tsis pub, nws yuav tawg. Yog tias ob qho kev ntsuas ntsuas yog 0 lossis 1, nws qhia tau tias lub diode puas lawm.
