Lwm txoj kev siv rau multimeters: Tej yam yuav tsum nco ntsoov thaum kho tsheb
Cov lus ceeb toom ntawm kev siv multimeters hauv kev kho tsheb. Thaum siv cov khoom siv hluav taws xob hauv tsheb los kho tsheb, multimeters feem ntau siv los ntsuas qhov tsis kam, voltage thiab diode polarity. Lawv yog siv rau kev ntsuas tsheb tsis kam, ntsuas tsheb voltage, ntsuas tsheb tam sim no, thiab lwm yam.
Thaum kho cov khoom siv hluav taws xob hauv tsheb, feem ntau yuav tsum tau siv lub tshuab hluav taws xob los ntsuas qhov tsis kam, qhov hluav taws xob thiab polarity ntawm diode. Thaum siv, cov teeb meem hauv qab no yuav tsum tau them rau:
Multimeter rau automotive kuj ntsuas
1. Thaum ntsuas kev tiv thaiv, cov khoom siv hauv kev sim ntawm lub tsheb yuav tsum tsis txhob raug them, thiab cov khoom siv hauv kev sim yuav tsum tsis txhob txuas nrog rau lwm yam khoom siv hluav taws xob.
2. Ua ntej ntsuas qhov kev tiv thaiv ntawm lub tsheb, xaiv qhov ntau thiab kho cov multimeter kom xoom hauv qhov ntau. Thaum lub multimeter tsis tuaj yeem hloov kho mus rau xoom, nws txhais tau hais tias lub roj teeb ntawm lub multimeter yog tsawg thiab lub roj teeb yuav tsum tau hloov nrog ib qho tshiab.
3. Thaum ntsuas qhov tsis kam, sim ua kom tus taw tes taw qhia hauv nruab nrab ntawm lub dial kom txo qhov yuam kev.
4. Thaum ntsuas cov hluav taws xob qis qis, tsis txhob siv qhov chaw qis qis ohm ntawm multimeter hauv qab R * 100 kom tsis txhob muaj kev puas tsuaj rau lub transistor vim yog tam sim no overload.
Multimeter rau automotive voltage ntsuas
1. Thaum ntsuas qhov hluav taws xob DC ntawm lub tsheb, lub pob qhov rooj yuav tsum tau teem rau V. Thaum ntsuas qhov hluav taws xob AC, siv lwm txoj haujlwm, thiab xaiv qhov sib npaug ntawm qhov ntsuas hluav taws xob ntawm lub tsheb. Yog tias qhov ntsuas hluav taws xob tsis paub meej, qhov siab tshaj plaws yuav tsum raug xaiv rau kev sim.
2. Thaum ntsuas DC voltage nyob rau hauv ib lub tsheb, qhov kev ntsuam xyuas zoo ntawm cov multimeter yuav tsum tau txuas nrog lub siab muaj peev xwm kawg ntawm cov khoom uas raug kuaj, thiab cov hlau lead tsis zoo yuav tsum tau txuas nrog lub peev xwm qis kawg. Yog tias koj tsis tuaj yeem txiav txim siab qhov kawg twg muaj peev xwm siab dua, koj tuaj yeem kov ob qhov kev xeem coj ntawm cov khoom uas raug kuaj. davhlau ya nyob twg, yog hais tias tus pointer yog biased rau lub "-" sab ntawm lub nruab nrab kab ntawm DC voltage V, nws ua pov thawj hais tias cov kev xeem coj yog kev cob cog rua reversely.
Yog hais tias lub meter cwj mem yog thim rov qab, nws yooj yim rau khoov tus pointer, ua rau kev nyeem tsis raug. Txhawm rau tiv thaiv kev thim rov qab, qhov ntau yuav tsum tau xaiv ntau dua thaum lub sij hawm sim thiab qhov kev txiav txim yuav tsum ceev.
Multimeter rau automotive tam sim no ntsuas
1. Lub multimeter thiab cov khoom nyob rau hauv kev sim ntawm lub tsheb yuav tsum tau txuas nrog series.
2. Thaum ntsuas DC tam sim no hauv lub tsheb, lub multimeter yuav tsum tau muab tso rau ntawm qhov sib thooj A, qhov kev ntsuam xyuas zoo yog txuas nrog lub siab muaj peev xwm kawg, thiab qhov kev ntsuam xyuas tsis zoo yog txuas nrog qhov kawg ntawm qhov kawg, kom cov dej ntws tam sim no. los ntawm qhov kev xeem zoo coj mus rau qhov tsis zoo kuaj cov hlau lead thiab tawm.
3. Thaum ntsuas AC tam sim no, tsis muaj qhov zoo lossis qhov tsis zoo ntawm qhov kev xeem coj. Qhov ntau yuav tsum ua raws li qhov ntsuas tam sim no kom ntau li ntau tau. Yog tias qhov ntsuas tam sim no tsis paub, qhov ntsuas yuav tsum tau ua los ntawm qhov siab tshaj plaws. Thaum lub tsheb multimeter tsis siv, lub qhov rooj iav yuav tsum muab tso rau ntawm qhov siab tshaj plaws AC voltage.
