Taw qhia rau Troubleshooting Multimeters
Lub tshuab hluav taws xob digital, tseem hu ua multimeter, multimeter, multimeter, lossis triple meter, yog ntau yam khoom siv hluav taws xob ntsuas uas feem ntau suav nrog cov haujlwm xws li ammeter, voltmeter, thiab ohmmeter. Piv nrog rau pointer type multimeter, digital multimeter muaj qhov zoo ntawm qhov raug siab, ceev ceev, loj input impedance, yog digital zaub thiab nyeem ntawv, muaj zog tiv thaiv kev cuam tshuam, thiab qib siab ntawm kev ntsuas automation, thiab yog siv dav. Tab sis yog tias siv tsis raug, nws tuaj yeem ua rau tsis zoo.
Kev daws teeb meem digital multimeter feem ntau yuav tsum pib nrog lub hwj chim mov. Kev daws teeb meem ntawm digital multimeter tuaj yeem ua raws li hauv qab no.
1. Kev tshuaj xyuas qhov muag.
Koj tuaj yeem kov qhov kub thiab txias ntawm lub roj teeb, resistor, transistor, thiab kev thaiv nrog koj txhais tes kom pom tias nws siab dhau lawm. Yog tias lub roj teeb uas tau nruab tshiab sov, nws qhia tau hais tias lub voj voog yuav luv luv. Tsis tas li ntawd, nws tseem yuav tsum tau saib xyuas seb lub Circuit Court puas raug kaw, desoldered, mechanically puas, thiab lwm yam.
2. Kev tsom xam Waveform.
Siv lub tshuab hluav taws xob oscilloscope los soj ntsuam qhov voltage waveform, amplitude, lub sij hawm (frequency), thiab lwm yam ntawm txhua qhov tseem ceeb hauv Circuit Court. Piv txwv li, yog tias lub moos oscillator yog nyob rau, yog tias tsis muaj qhov tso tawm los ntawm oscillator, nws qhia tau hais tias lub inverter sab hauv raug puas, los yog nws yuav yog vim qhib Circuit Court nyob rau sab nraud.
3. Ntsuas qhov ntsuas qhov ntsuas.
Rau cov khoom nyob rau hauv qhov kev ua txhaum ntau, parameter qhov tseem ceeb yuav tsum tau txheeb xyuas rau kev ntsuas hauv online lossis offline. Thaum ntsuas kev tiv thaiv online, qhov cuam tshuam ntawm cov khoom sib txuas nrog nws yuav tsum tau txiav txim siab.
4. Kev daws teeb meem zais.
Implicit faults hais txog qhov ua txhaum uas tshwm sim thiab ploj mus ib ntus, thiab qhov ntsuas qee zaum zoo lossis phem. Hom kev ua txhaum no yog qhov nyuaj heev, thiab cov laj thawj feem ntau suav nrog cov pob qij txha tau xoob, xoob txuas, kev sib cuag tsis zoo ntawm kev hloov pauv hloov, kev ua haujlwm tsis ruaj khov, thiab txuas txuas txuas ntxiv ntawm cov coj. Tsis tas li ntawd, nws kuj suav nrog cov xwm txheej tshwm sim los ntawm lwm yam. Yog hais tias qhov kub thiab txias ambient siab dhau lawm, cov av noo siab dhau lawm, los yog muaj cov teeb liab cuam tshuam muaj zog nyob ze, thiab lwm yam.
5. Tshawb xyuas qhov ua haujlwm voltage ntawm txhua qib.
Tshawb xyuas qhov ua haujlwm voltage ntawm txhua qhov chaw thiab sib piv nrog tus nqi ib txwm muaj. Ua ntej, xyuas kom meej qhov tseeb ntawm qhov kev siv hluav taws xob, zoo dua yog siv digital multimeter ntawm tib tus qauv lossis zoo sib xws rau kev ntsuas thiab sib piv.
Ntxiv nrog rau kev txiav txim siab txog cov laj thawj saum toj no, kev puas tsuaj rau digital multimeter kuj tseem tuaj yeem tshwm sim los ntawm kev ua yuam kev hauv kev ntsuas iav. Piv txwv li, thaum ntsuas AC lub zog hluav taws xob, qhov ntsuas iav raug xaiv los ua cov iav tiv thaiv. Nyob rau hauv cov ntaub ntawv no, thaum lub sojntsuam tiv tauj lub mains lub hwj chim, nws yuav instantly ua kev puas tsuaj rau lub sab hauv ntawm lub multimeter. Yog li ntawd, ua ntej siv ib tug multimeter rau kev ntsuas, nws yog ib qhov tsim nyog los xyuas seb lub ntsuas ntsuas yog qhov tseeb. Tom qab siv, tso qhov ntsuas ntawm AC 750V lossis DC 1000V, yog li tsis muaj teeb meem dab tsi tsis raug ntsuas hauv kev ntsuas tom ntej, nws yuav tsis ua rau muaj kev puas tsuaj rau digital multimeter.
