Dab tsi yog qhov txawv ntawm megohmmeter thiab multimeter?
1. Cov qauv sib xyaw yog txawv:
Lub megohmmeter yog tsim los ntawm nruab nrab thiab loj scale integrated circuits. Qhov ntsuas no muaj lub zog tso zis loj, siab luv luv tam sim no tus nqi, thiab ntau qhov tso zis voltage ntau ntau (txhua tus qauv muaj plaub theem voltage).
Lub multimeter yog tsim los ntawm peb qhov tseem ceeb: meter taub hau, ntsuas Circuit Court thiab hloov pauv hloov.
2. Lub hauv paus ntsiab lus ua haujlwm txawv:
Ib lub megohmmeter siv Ohm txoj cai los ntsuas qhov kev tiv thaiv los ntawm kev txaus siab ntawm lub cuab yeej lossis lub network hauv kev sim nrog qhov hluav taws xob thiab tom qab ntawd ntsuas qhov tam sim no tsim los ntawm kev txhawb nqa.
Lub hauv paus ntsiab lus ntawm multimeter yog siv lub rhiab magnetoelectric DC ammeter (microampere meter) ua lub taub hau meter. Thaum ib qho me me tam sim no dhau los ntawm lub taub hau meter, yuav muaj qhov qhia tam sim no.
3. Qhov kev siv yog txawv:
Megohmmeters feem ntau yog siv thiab indispensable instruments nyob rau hauv hluav taws xob hwj chim, post thiab telecommunications, kev sib txuas lus, electromechanical installation thiab txij nkawm, thiab industrial enterprise departments uas siv hluav taws xob raws li muaj hwj chim los yog lub zog. Nws yog qhov tsim nyog rau kev ntsuas tus nqi tsis kam ntawm ntau yam khoom siv insulating thiab rwb thaiv tsev ntawm transformers, motors, cables thiab khoom siv hluav taws xob.
Lub multimeter tuaj yeem siv tsis tau tsuas yog ntsuas qhov tsis kam ntawm cov khoom ntsuas, tab sis kuj ntsuas qhov DC voltage. Qee qhov multimeters tuaj yeem ntsuas qhov tseem ceeb ntawm cov transistors thiab lub peev xwm ntawm capacitors.
Taw qhia rau header ntawm digital multimeter
Lub taub hau ntawm lub tshuab hluav taws xob digital feem ntau yog tsim los ntawm A / D (analog / digital) hloov dua siab tshiab nti ntxiv rau cov khoom siv peripheral ntxiv rau cov kua siv lead ua kua. Qhov tseeb ntawm multimeter raug cuam tshuam los ntawm lub taub hau. Tus lej hloov los ntawm A/D nti feem ntau kuj hu ua Rau 3 1/2 tus lej multimeter, 4 1/2 tus lej multimeter thiab lwm yam. Cov chips feem ntau siv yog ICL7106 (3 thiab ib nrab ntawm LCD phau ntawv ntau yam classic nti, cov ntawv tom ntej yog 7106A, 7106B, 7206, 7240, thiab lwm yam), ICL7129 (4 thiab ib nrab ntawm LCD phau ntawv ntau yam classic nti), ICL7107 (3 thiab ib nrab LED phau ntawv ntau yam Classic nti).
