Kev ntsuas thiab kev ceev faj rau kev siv cov multimeters
Cov lus ntsuas qhov tseeb, qhov ntsuas dav dav, tuaj yeem ntsuas qhov voltage, tam sim no, tsis kam, inductance, capacitance, zaus, transistor, thiab lwm yam, yog li nyob rau hauv xyoo tas los no nrov heev.
1, digital meter zaub feem ntau siv rau ntau tshaj 31/2, 41/2, thiab lwm yam., nws qhov ntau rau 2 raws li lub hauv paus, xws li 200mV (duab 199.9mV), 2V (duab 1.999V), 20Ω (duab 19.99Ω ), 200mA (duab 199.9mA), thiab lwm yam, yog li kev xaiv ntawm ntau yam yuav tsum nyob ze li qhov ua tau kom tag nrho ntawm tus nqi.
2, Digital 'meter' tso saib qhov tseeb yog qhov cuam tshuam loj heev los ntawm lub roj teeb hluav taws xob, yog li yog tias koj pom cov ntawv nyeem tsis zoo hauv kev siv, koj yuav tsum xyuas lub roj teeb hauv lub sijhawm.
3, Digital 'meter' ntau yam, lub sijhawm iav yog qhov ntom ntom, yog li peb yuav tsum txhim kho tus cwj pwm ntawm kev tshuaj xyuas qhov ntau kom zoo ua ntej kuaj.
4, Yog tias koj tsis paub meej txog qhov voltage thiab tam sim no ntawm qhov kev xeem, koj yuav tsum xaiv qhov siab tshaj plaws ua ntej.
5, Raws li nrog lub ntsuas ntsuas, nws yog txwv tsis pub hloov lub iav thaum lub tshuab hluav taws xob.
6, pointer meter ceev faj cov ntsuas ntsuas qhov tseem ceeb tshaj plaws.
(1) Ua ntej siv lub multimeter los ntsuas qhov ntsuas hluav taws xob xoom thiab hluav taws xob xoom, yog tias koj xav ntsuas qhov tam sim no lossis qhov hluav taws xob, koj yuav tsum kho qhov ntsuas hluav taws xob xoom ntawm lub ntsuas ntsuas ua ntej; Yog tias koj xav ntsuas qhov tsis kam, koj yuav tsum kho qhov hluav taws xob xoom ntawm lub ntsuas ntsuas ntsuas ua ntej txhawm rau tiv thaiv qhov hluav taws xob ntawm lub roj teeb hauv lub ntsuas hluav taws xob los ntawm kev poob qis thiab tsim qhov ntsuas qhov yuam kev.
(2) Ua ntej kev ntsuas, nco ntsoov xaiv cov iav zoo, piv txwv li cov iav hluav taws xob, cov iav tam sim no lossis cov iav tiv thaiv, thiab tseem xaiv qhov zoo. Qhov kev xaiv thawj zaug yuav tsum yog los ntawm loj mus rau me me, thiaj li tsis mus ua txhaum tus pointer. Nws yog txwv tsis pub hloov qhov ntau nrog hluav taws xob. Cov ntsiab lus xaiv ntau yam yog "U, Kuv nyob rau sab saud, R nyob rau hauv nruab nrab ntawm qhov tseeb dua", uas yog, qhov ntsuas ntawm qhov hluav taws xob, tam sim no, tus pointer hauv lub dial ntau dua 1/2, ntsuas qhov tsis kam, tus pointer nyob nruab nrab ntawm lub dial kom raug.
(3) Thaum ntsuas DC, xyuam xim rau qhov polarity ntawm tus cwj mem. Kev ntsuas hluav taws xob siab, cov cwj mem liab thiab dub yuav tsum tau muab tso rau hauv "2500V" thiab "-".
thiab "-" jacks, muab lub multimeter rau ntawm lub ntsuas hluav taws xob, thiab tom qab ntawd siv cov cuab yeej insulated kov tus cwj mem mus rau qhov ntsuas ntsuas.
(4) Thaum ntsuas transistors lossis cov khoom siv sib xyaw ua ke, tsis txhob siv R × 1 thiab R × 10k ntau yam iav.
(5) Kev saib xyuas yuav tsum tau ua kom tsis txhob muaj kev cuam tshuam luv luv thiab hluav taws xob poob thaum lub sijhawm ntsuas ntsuas.
(6) Thaum tsis siv, lub toggle hloov yuav tsum tsis txhob nres nyob rau hauv lub ohm ntau yam los tiv thaiv lub roj teeb kom tsis txhob raug rho tawm thaum lub meter mem luv luv.
