Cov lus qhia yooj yim rau kev daws teeb meem digital multimeters
Digital multimeter troubleshooting phau ntawv qhia yooj yim: peb tab tom siv digital multimeter yog siv analogue / digital conversion hauv paus ntsiab lus, yuav raug ntsuas rau hauv cov lej, thiab cov txiaj ntsig ntawm kev ntsuas yuav muab tso rau hauv digital daim ntawv ntsuas ntsuas. Digital multimeter piv nrog lub pointer multimeter, nrog rau siab precision, ceev, input impedance, cov zaub, nyeem kom raug, anti-interference muaj peev xwm, ntsuas automation thiab lwm yam zoo thiab yog dav siv. Txawm li cas los xij, yog tias tsis siv kom raug, nws yooj yim ua rau tsis ua haujlwm. Hauv daim ntawv no, tus digital multimeter DT2201D ua piv txwv, tham txog kev daws teeb meem dav dav ntawm digital multimeter. Kev daws teeb meem digital multimeter feem ntau yuav tsum pib los ntawm lub hwj chim mov. Piv txwv li, tom qab tig lub hwj huam mov, yog tias lub LCD tso tawm, koj yuav tsum xub xyuas seb qhov voltage ntawm 9V laminated roj teeb yog tsawg dhau; seb lub roj teeb txhuas puas raug txiav tawm. Nrhiav kev txhaum yuav tsum ua raws li "thawj sab hauv thiab sab nraud, ua ntej yooj yim tom qab qhov nyuaj" kev txiav txim. Kev daws teeb meem digital multimeter tuaj yeem ua raws li hauv qab no.
Ua ntej, saib xyuas. Koj tuaj yeem kov lub roj teeb, resistor, transistor, integrated block kub nce siab heev. Yog hais tias lub roj teeb tshiab uas twb tau ntim lawm yog kub, lub Circuit Court yuav luv. Tsis tas li ntawd, nws yuav tsum tau soj ntsuam seb lub Circuit Court puas, desoldering, mechanical puas thiab lwm yam.
Thib ob, kuaj xyuas qhov ua haujlwm voltage ntawm txhua qib. Tshawb xyuas qhov kev khiav hauj lwm voltage ntawm ntau lub ntsiab lus, thiab sib piv nrog tus nqi ib txwm, ua ntej ntawm tag nrho cov, qhov tseeb ntawm qhov siv hluav taws xob yuav tsum tau ua kom ntseeg tau, * nws yog qhov zoo rau siv ib daim ntawm tib tus qauv lossis zoo sib xws digital multimeter rau kev ntsuas thiab sib piv.
Thib peb, waveform tsom xam. Nrog rau lub tshuab hluav taws xob oscilloscope los soj ntsuam cov hluav taws xob hluav taws xob hauv hluav taws xob ntawm ntau lub ntsiab lus tseem ceeb, amplitude, lub sij hawm (frequency), thiab lwm yam.. Piv txwv li, xws li ntsuas seb lub moos oscillator oscillation, oscillation zaus yog 40 kHz. Yog hais tias lub oscillator tsis muaj cov zis, qhia tias DT2201D sab hauv inverter puas lawm, nws kuj yuav yog ib qho kev tivthaiv sab nraud qhib Circuit Court. Kev soj ntsuam ntawm DT2201D tus pin waveform yuav tsum yog 50Hz square nthwv dej, txwv tsis pub, nws yuav ua rau sab hauv 200 zaus faib khoom puas.
Plaub, ntsuas qhov ntsuas qhov ntsuas. Cheebtsam nyob rau hauv lub Scope ntawm qhov txhaum, kev ntsuas hauv internet los yog offline ntsuas, parameter qhov tseem ceeb yuav tsum tau soj ntsuam. Rau kev ntsuas kev tiv thaiv online, yuav tsum xav txog qhov cuam tshuam ntawm cov khoom sib txuas nrog nws.
Thib tsib, muab zais yuam kev tshem tawm. Hidden fault hais txog qhov txhaum yog muab zais, qhov ntsuas yog qhov zoo lossis qhov tsis zoo. Xws li kev ua tsis tiav yog qhov nyuaj dua, feem ntau ua rau muaj kev sib koom ua ke ntawm cov pob qij txha, xoob, xoob txuas, kev sib cuag tsis zoo nrog kev hloov pauv, cov khoom siv tsis ruaj khov, cov hlau lead yuav tawg thiab lwm yam. Tsis tas li ntawd, kuj suav nrog qee yam sab nraud tshwm sim los ntawm. Xws li kub ambient kub, cov av noo ntau dhau los yog muaj zog cuam tshuam cov teeb liab nyob ze thiab lwm yam.
