Cov txheej txheem rau kev daws teeb meem nrog lub digital multimeter
Ib qho digital multimeter (DMM) yog lub ntsuas ntsuas uas siv cov qauv analogue / digital hloov dua siab tshiab los hloov qhov ntsuas mus rau hauv cov lej digital thiab tso saib cov txiaj ntsig ntsuas hauv daim ntawv digital. Piv nrog rau pointer multimeter, digital multimeter muaj qhov zoo ntawm qhov raug siab, ceev ceev, loj input impedance, digital zaub, nyeem ntawv raug, muaj peev xwm tiv thaiv kev cuam tshuam, qib siab ntawm kev ntsuas automation thiab siv dav. Txawm li cas los xij, yog tias tsis siv kom raug, nws yooj yim ua rau tsis ua haujlwm.
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 lub LCD yuan zaub, koj yuav tsum xub xyuas seb qhov voltage ntawm 9V laminated roj teeb tsawg dhau lawm; 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 uas yuav tsum 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 (ntau zaus), thiab lwm yam. Yog hais tias lub oscillator tsis muaj cov zis, qhia tias TSC7106 sab hauv inverter puas lawm, nws kuj yuav yog ib qho khoom siv sab nraud qhib Circuit Court. Kev soj ntsuam TSC7106 ko taw {21} waveform yuav tsum yog 50Hz square nthwv dej, txwv tsis pub, nws yuav yog 200 zaus faib kev puas tsuaj.
Plaub, ntsuas qhov ntsuas qhov ntsuas.
Rau cov khoom nyob rau hauv qhov kev ua txhaum, kev ntsuas hauv online lossis kev ntsuas offline, qhov ntsuas qhov ntsuas yuav tsum raug tshuaj xyuas. 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.
