Cov kev daws teeb meem zoo tshaj plaws rau digital multimeter tsis ua haujlwm,
Kev daws teeb meem digital multimeter feem ntau yuav tsum pib nrog lub hwj chim mov. Piv txwv li, tom qab tig lub hwj chim, yog tias cov kua siv lead ua kua cell tshwm, koj yuav tsum xub xyuas seb qhov hluav taws xob ntawm 9V laminated roj teeb tsawg dhau lawm; seb lub roj teeb txhuas puas raug txiav tawm. Nrhiav qhov txhaum yuav tsum ua raws li qhov kev txiav txim ntawm "thawj sab hauv thiab tom qab sab nraud, thawj zaug yooj yim thiab tom qab ntawd nyuaj". Kev daws teeb meem digital multimeter tuaj yeem ua tiav raws li hauv qab no.
1. Kev tshuaj xyuas qhov tshwm sim.
Puas yog qhov kub thiab txias ntawm cov roj teeb, resistors, transistors, thiab kev sib xyaw ua ke uas tuaj yeem kov ntawm tes siab dhau lawm? Yog tias lub roj teeb uas tau nruab tshiab tsim hluav taws xob, lub voj voog yuav luv luv. Tsis tas li ntawd, lub Circuit Court yuav tsum tau soj ntsuam rau kev sib txuas, desoldering, mechanical puas, thiab lwm yam.
Qhov thib ob, xyuas qhov kev khiav hauj lwm voltage ntawm txhua qib.
Xyuas qhov kev khiav hauj lwm voltage ntawm txhua qhov taw tes thiab muab piv nrog tus nqi ib txwm muaj. Ua ntej, xyuas qhov tseeb ntawm qhov siv voltage. Nws yog qhov zoo tshaj plaws los siv digital multimeter ntawm tib hom lossis zoo sib xws los ntsuas thiab sib piv.
Peb, waveform tsom xam.
Siv lub tshuab hluav taws xob oscilloscope los soj ntsuam qhov voltage waveform, fluctuation, lub sij hawm (frequency), thiab lwm yam ntawm txhua qhov tseem ceeb ntawm Circuit Court. Piv txwv li, yog tias lub moos vibrator pib vibrate, seb qhov kev vibration zaus yog 40kHz. Yog hais tias lub oscillator tsis muaj cov zis, nws txhais tau hais tias lub internal inverter ntawm TSC7106 puas, los yog lwm yam khoom yuav qhib. Saib xyuas tias lub waveform ntawm tus pin {21} ntawm TSC7106 yuav tsum yog 50Hz square nthwv dej, txwv tsis pub, sab hauv 200 zaus sib faib yuav puas.
Plaub, 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, kev cuam tshuam ntawm cov khoom txuas nrog rau kev sib txuas nrog nws yuav tsum tau txiav txim siab.
5. Tshem tawm qhov yuam kev zais cia.
Cov kev ua txhaum zais cia hais txog qhov txhaum uas tshwm sim thiab ploj mus ib ntus, thiab qhov zoo li qhov tsis zoo. Qhov kev ua tsis tiav no yog qhov nyuaj, thiab feem ntau muaj xws li cov pob qij txha, cov khoom siv xoob xoob xoob, kev sib cuag tsis zoo ntawm cov hloov pauv hloov, cov khoom tsis ruaj khov, thiab cov khoom tawg. Tsis tas li ntawd, nws kuj suav nrog qee yam sab nraud. Piv txwv li, ambient kub yog siab dhau lawm, cov av noo siab dhau lawm, los yog muaj cov teeb liab muaj zog cuam tshuam nyob ze.
