Cov lus qhia yooj yim rau kev daws teeb meem Digital Multimeters
Daim ntawv qhia yooj yim rau kev daws teeb meem digital multimeters: Thaum peb siv digital multimeter, nws yog lub ntsuas ntsuas uas siv lub hauv paus ntsiab lus ntawm analog-to-digital hloov dua siab tshiab los hloov cov ntsuas ntsuas mus rau hauv daim ntawv digital thiab tso saib cov txiaj ntsig ntsuas hauv daim ntawv digital. Piv nrog rau pointer multimeters, digital multimeters tau dav siv vim lawv qhov raug siab, ceev ceev, loj input impedance, digital zaub, nyeem kom raug, muaj zog tiv thaiv kev cuam tshuam, thiab qib siab ntawm kev ntsuas automation. Tab sis yog tias siv tsis raug, nws tuaj yeem ua rau tsis zoo. Kab lus no yuav siv cov digital multimeter DT2201D ua piv txwv los tham txog cov kev daws teeb meem dav dav rau digital multimeter faults. Kev daws teeb meem digital multimeter feem ntau pib nrog lub hwj chim mov. Piv txwv li, tom qab txuas cov khoom siv hluav taws xob, yog tias lub xov tooj ntawm LCD pom, qhov voltage ntawm 9V stacked roj teeb yuav tsum tau kuaj ua ntej kom pom tias nws tsawg dhau; Puas yog lub roj teeb coj tau txiav tawm. Kev tshawb nrhiav qhov txhaum yuav tsum ua raws li qhov kev txiav txim ntawm "hauv ntej, tom qab sab nraud, yooj yim ua ntej, tom qab nyuaj". Kev daws teeb meem ntawm digital multimeter tuaj yeem ua raws li hauv qab no.
1, Kev tshuaj xyuas qhov tshwm sim. Koj tuaj yeem kov qhov kub thiab txias ntawm lub roj teeb, resistor, transistor, thiab kev thaiv nrog koj txhais tes los xyuas seb 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 yuav tsum tau soj ntsuam seb lub Circuit Court puas, desoldered, mechanically puas, thiab lwm yam.
2, Tshawb xyuas qhov ua haujlwm voltage ntawm txhua qib. Txhawm rau txheeb xyuas qhov ua haujlwm voltage ntawm txhua qhov chaw thiab sib piv nrog tus nqi ib txwm muaj, qhov tseeb ntawm qhov siv hluav taws xob yuav tsum tau ua kom ntseeg tau ua ntej. Nws yog qhov zoo tshaj plaws los siv digital multimeter ntawm tib tus qauv lossis cov qauv zoo sib xws rau kev ntsuas thiab sib piv.
3, Kev tsom xam Waveform. Saib xyuas qhov voltage waveform, amplitude, lub sij hawm (frequency), thiab lwm yam ntawm txhua qhov tseem ceeb hauv Circuit Court siv lub tshuab hluav taws xob oscilloscope. Piv txwv li, txhawm rau kuaj seb lub moos oscillator pib oscillating thiab seb qhov oscillation zaus yog 40kHz. Yog hais tias lub oscillator tsis muaj cov zis, nws qhia tau hais tias lub internal inverter ntawm DT2201D puas, los yog nws yuav yog ib tug qhib Circuit Court ntawm sab nraud Cheebtsam. Lub waveform pom ntawm ko taw ntawm DT2201D yuav tsum yog 50Hz square nthwv dej, txwv tsis pub, nws yuav yog vim kev puas tsuaj rau sab hauv 200 zaus faib.
4, Ntsuas qhov ntsuas qhov ntsuas. Rau cov khoom nyob rau hauv qhov kev ua txhaum ntau, kev ntsuas hauv online lossis offline yuav tsum tau ua, thiab qhov ntsuas qhov ntsuas yuav tsum tau txheeb xyuas. Thaum ntsuas kev tiv thaiv hauv online, qhov cuam tshuam ntawm cov khoom sib txuas hauv qhov sib txuas yuav tsum raug txiav txim siab.
5, Kev daws teeb meem zais zais. Nkaum faults hais txog qhov txhaum uas tshwm sim thiab ploj mus tsis tu ncua, nrog lub ntsuas vaj huam sib luag hloov pauv ntawm qhov zoo thiab qhov tsis zoo. Hom kev ua txhaum no yog qhov nyuaj heev, thiab feem ntau ua rau muaj xws li virtual soldering ntawm cov pob qij txha, loosening, xoob connectors, kev sib cuag ntawm cov hloov pauv hloov, tsis ruaj khov tiv thaiv kev ua tau zoo, thiab kev tawg txuas ntxiv ntawm cov hlau lead. Tsis tas li ntawd, nws kuj suav nrog
yam tshwm sim los ntawm lwm yam. Xws li ambient kub, high humidity, los yog intermittent muaj zog cuam tshuam teeb liab nyob ze.
