Cov txheej txheem thiab cov yuav tsum tau ua rau Overhauling Digital Multimeter
Ib qho digital multimeter yog ib qho cuab yeej uas siv cov cuab yeej ntsuas digital los hloov cov khoom sib txuas txuas mus rau hauv cov ntawv tsis sib xws, tsis sib xws rau cov duab. Vim hais tias cov multimeter muaj qhov zoo ntawm cov duab meej, intuitive thiab raug nyeem, zam kev nyeem ntawv yuam kev ntawm tus pointer multimeter, kev ntsuas dav dav, ntsuas ceev ceev, siab daws teeb meem, muaj peev xwm tiv thaiv kev cuam tshuam, ua tiav kev tiv thaiv Circuit Court thiab siab input impedance, nws yog dav siv. Cov khoom kuaj pom zoo rau digital multimeters siv hauv kev ntsuas hluav taws xob suav nrog: DC thiab AC voltage, tsis kam, diode, on-off test nrog suab, thiab transistor test.
Cov ntsiab lus tseem ceeb rau Kev Txhim Kho Digital Multimeters
Overhauling digital multimeters yog ib qho kev mob siab thiab ua haujlwm zoo, thiab qee zaum nws yuav siv zog ntau thiab ua haujlwm hnyav. Yog li ntawd, nws yog ib qho tseem ceeb heev kom tsis tu ncua khaws cov ntaub ntawv thiab sau cov kev paub dhau los. Ib daim ntawv qhia kev yuav tsum tau tsim rau txhua tus digital multimeter thiab suav nrog sib npaug. Txhua multimeter yuav tsum ua tib zoo sau rau hauv daim ntawv lees paub lees paub, daim npav kho, thiab daim npav calibration tsis tu ncua. Qhov no muaj ob qhov zoo. Nws yog tsim kom muaj cov ntaub ntawv ua tiav rau txhua qhov ntsuas, thiab qhov thib ob yog los pab txhim kho qib kev kho cov neeg ua haujlwm. Cov txheej txheem kho kuj yog cov txheej txheem ua ntu zus ntawm kev xyaum-theory-practice. Txhua lub sijhawm kho digital multimeter, yuav muaj kev nce qib thiab kev paub tshiab. Yog tias koj tsis npaj thiab sau lawv raws sijhawm, koj yuav tsis nco qab lawv tom qab ntev. Tus nqi rov ua dua ntawm cov kev ua txhaum ntau yog siab, thiab nws tuaj yeem tshawb nrhiav sai sai los ntawm kev tshuaj xyuas cov ntaub ntawv yav dhau los. Qee qhov kev ua tsis tiav yog cuam tshuam nrog cov neeg ua haujlwm, thiab cov laj thawj yuav tsum tau qhia rau lawv kom tsis txhob muaj kev ua tsis tiav zoo li yav tom ntej. Qee qhov kev ua tsis tiav tshwj xeeb muaj tsawg dua yuav tshwm sim, thiab nws yuav siv ntau yam teeb meem los tshem tawm lawv. Sau lawv yuav yog tus nqi siv rau kev ua haujlwm yav tom ntej. Cov ntaub ntawv yuav tsum ua kom meej thiab meej, muaj peev xwm piav qhia qhov teeb meem. Tsis tas li ntawd, cov neeg ua haujlwm saib xyuas tseem raug txhawb kom txheeb xyuas cov ntawv sau tseg, tsom mus rau kev sau tseg yuav ua li cas tshem tawm qhov tsis tseeb thiab khaws qhov tseeb raws li qhov tshwm sim, txheeb xyuas thiab txiav txim, thiab maj mam txiav txim siab qhov ua tsis tiav. Ntawm no, kev xav nrawm thiab kev xav kom raug yog qhov tseem ceeb. Koj yuav tsum tau sau cov lus txiav txim uas koj tau pib ua tsis yog thiab vim li cas. Qee cov tswv yim tseem ceeb, xws li lub tswv yim ntawm kev txhim kho lub ntsuas hluav taws xob, yog sai sai, thiab nws yog qhov tsim nyog yuav tsum tau sau lawv ntau dua.
Cov txheej txheem dav dav rau kev daws teeb meem ntawm Digital Multimeter
Kev kho dua lub tshuab digital multimeter zoo li tus kws kho mob pom tus neeg mob. Koj tuaj yeem xav qiv plaub tus cwj pwm ntawm "saib, hnov tsw, nug, thiab txiav" feem ntau siv hauv kev kuaj tshuaj suav tshuaj.
Saib: ua ntej ua ib qho kev soj ntsuam ntawm lub cuab yeej los xyuas qhov kev puas tsuaj, seb puas muaj kev puas tsuaj rau cov khoom siv hluav taws xob, hluav taws xob puas, cov khoom ploj, thiab lwm yam;
Tsis hnov tsw: mloog tus neeg siv cov lus qhia txog kev puas tsuaj ntawm cov cuab yeej, qhov txawv txav pom thaum muaj qhov txhaum, thiab lwm yam.;
Nqe Lus Nug: Rau cov ntsiab lus tsis txaus ntseeg, nug ob peb yam ntxiv, xws li seb tus neeg teb xov tooj puas muaj kev ua haujlwm tsis raug, txawm hais tias lub overcurrent thiab overvoltage tiv thaiv Circuit Court ntawm lub ntsuas muaj qhov qhib Circuit Court lossis luv Circuit Court txhaum;
Txiav: Ua raws li kev soj ntsuam, kos daim ntawv saib xyuas kev khiav dej num thaum tsim nyog, thiab tsim kom muaj txiaj ntsig zoo rau kev daws teeb meem sai;
Saib, hnov tsw, nug, thiab ua txhua yam muaj nyob rau hauv kev tshawb nrhiav thiab kev tshawb fawb thiab kev soj ntsuam ntawm qhov ua rau tsis ua haujlwm, kom paub txog nws.
Kev kho cov digital multimeter yuav tsum tau ua nrog siv rau daim duab kos duab. Nws yog qhov yooj yim dua yog tias muaj cov ntawv luam tawm thiab cov duab sib dhos: cov khoom siv ntawm cov khoom siv digital feem ntau tsis muab cov duab kos, uas ua rau muaj teeb meem loj rau kev saib xyuas. Yog tias tsim nyog, koj yuav tsum tau soj ntsuam thiab ua daim ntawv qhia tag nrho lub tshuab hluav taws xob lossis tsuas yog lub voj voog uas muaj qhov tsis raug. Koj tuaj yeem xa mus rau tag nrho lub tshuab hluav taws xob lossis lub tshuab hluav taws xob ntawm lub tshuab hluav taws xob digital uas muab rau hauv cov phau ntawv cuam tshuam.
Kev daws teeb meem feem ntau pib nrog lub hwj huam mov. Yog tias tsis muaj cov zaub ntawm LCD tom qab tig lub zog, ua ntej xyuas seb qhov hluav taws xob ntawm 9V laminated roj teeb tsawg dhau, seb lub roj teeb ua haujlwm puas raug txiav, thiab seb lub hwj huam hloov puas puas lawm. Yog tias qhov hluav taws xob ntawm lub zog hluav taws xob roj teeb yog qhov qub, tab sis qhov voltage tsis tuaj yeem ntsuas los ntawm ib qho-chip A / D converter, nws feem ntau yog vim muaj qhov qhib hluav taws xob ntawm cov roj teeb coj los yog kev sib cuag tsis zoo hauv lub hwj chim hloov. . Kev daws teeb meem yuav tsum sim ua kom tiav, tawm hauv tsis muaj kev phom sij zais, thiab tsis muaj feem.
