Cov lus qhia ntawm kev siv lub multimeter, koj tsis tas yuav thov kev pab tom qab koj kawm nws
Nyob rau hauv lub neej, txhua leej txhua tus yog inseparable ntawm hluav taws xob. Raws li cov cuab yeej ntsuas, multimeter yog qhov tsis tshua muaj neeg pab zoo thaum peb daws teeb meem hauv Circuit Court thiab hluav taws xob tsis raug. Txawm hais tias koj yog ib tus neeg nyiam siv hluav taws xob lossis ib tus neeg tshiab hauv lub neej. Raws li ib tug txiv neej, nws tsis txaj muag los thov kev pab thaum muaj ib yam dab tsi tshwm sim hauv tsev? Yog li tam sim no cia kuv kawm qee qhov kev paub txog multimeters! Thaum koj kawm lawm, koj tsis tas yuav thov kev pab, yog vim li cas ho tsis ua?
Muaj ntau hom multimeters, thiab kuv xav kom koj xaiv cov digital nrog calipers tam sim no. Lub rooj zoo li no yooj yim heev hauv kev siv tswv yim thiab yooj yim kawm. Txawm hais tias muaj ntau cov ntaub ntawv thiab cov lej ntawm multimeter, qhov tseeb, tsis muaj ntau cov ntaub ntawv uas peb nquag siv. Cia kuv qhia luv luv rau koj. Feem ntau siv multimeter yog AC voltage iav (cim ACV), uas tsuas yog ntsuas AC voltage. DC voltage iav (cim DCV) feem ntau ntsuas qhov DC voltage. Kev thaiv hluav taws xob (cim Ω) On thiab tawm iav (lub cim yog lub cim zoo li lub teeb liab wireless). Yuav ua li cas siv lub multimeter tshwj xeeb, Kuv tsis xav tham txog nws hnub no. Vim tias nws yog qhov tseeb heev hauv phau ntawv qhia, hnub no kuv yuav qhia ob txoj hauv kev rau kev siv multimeter txhawm rau txheeb xyuas qhov tsis raug.
Thawj txoj kev me me, siv lub multimeter los kuaj xyuas qhov tawg ntawm cov hlau. Vim hais tias txheej txheej ntawm cov hlau yog qhwv nrog cov tawv nqaij insulating, lub sab hauv breakpoint yog qhov nyuaj rau pom. Nws yog ib qho teeb meem heev los ntes nrog ib txwm siv multimeter. Nws yuav tsum tau thaiv los ntawm hluav taws xob. Tam sim no cov digital tau yooj yim dua, txuas ib kawg ntawm cov xaim mus rau theem xaim, thiab tawm mus rau lwm qhov kawg ntab. Tuav lub taub hau ntawm cov hlau lead hauv ib txhais tes thiab cov hlau kuaj liab nyob rau hauv lwm qhov, thiab maj mam txav lub taub rov qab raws li cov rwb thaiv tsev ntawm cov hlau los ntawm qhov kawg ntawm cov theem txhuas. Thaum qhov hluav taws xob nyeem ntawv ntawm multimeter dheev dhau los ua me me (sib npaug rau ib feem kaum ntawm qhov kev nyeem thawj), qhov tawg ntawm cov hlau yog 15CM rov qab los ntawm no. Txoj kev no tsuas yog yuav tsum rhuav tshem ib qho ntawm cov hlau los daws qhov teeb meem, tsis yog nws yooj yim heev? Txoj kev no tseem tuaj yeem kuaj xyuas qhov tawg ntawm daim pam hluav taws xob.
Qhov thib ob me me txoj kev, siv ib tug multimeter los xyuas qhov short-circuit txhaum nyob rau hauv Circuit Court. Thaum cov hlau nyob hauv tsev raug puas los yog lub voj voog muaj kev laus thiab ua rau luv luv ntawm cov hlau nyob thiab cov hlau nruab nrab, nws feem ntau nyuaj rau kev txiav txim siab qhov luv luv ntawm qhov taw tes. Lub sijhawm no, nws tuaj yeem pom tau yooj yim los ntawm txoj kev ua haujlwm ntawm multimeter. Tom qab cov kab yog luv luv, lub ntsiab hloov yuav tsum raug txiav thiab tag nrho cov khoom siv hluav taws xob yuav tsum tau muab tshem tawm. Muab lub multimeter rau hauv cov iav tiv thaiv, thiab txuas ob qhov kev sim ua rau cov hlau nyob thiab cov hlau nruab nrab feem. Yog tias tus nqi tsis kam yog xoom lossis me me, qhov luv luv tuaj yeem txiav txim siab. Nws yog ib qho tsim nyog los ntsuas qhov ntsuas tus nqi ntawm cov hlau nyob nruab nrab thiab nruab nrab ntawm cov xaim los ntawm ntu, thiab yog tias tsim nyog, txiav tawm ib ntu ntawm cov hlau los txiav txim qhov luv luv Circuit Court. Txoj kev no tseem tuaj yeem kuaj xyuas qhov zoo ntawm cov tshuab hluav taws xob.
