Dab tsi yog qhov ua rau muaj kev tsis txaus siab nyeem ntawm ib tus neeg siv khoom siv ntau?
Yog tias cov neeg kho tshuab tshuaj loj, piv txwv li cov ntaub ntawv ua kom haum, thaum lwm cov ntaub ntawv tuaj yeem ua kom zoo, thaum lwm cov ntaub ntawv yuav tsum tsis cuam tshuam. Raws li kev sim ua lub hauv paus ntsiab lus ntawm ntau cov ntaub ntawv, nws yog qhov ntau heev uas lub shunt precision respector ntawm cov ntaub ntawv tsis kam hlawv lossis tshwm sim los ntawm tus nqi tiv thaiv. Qhov feem ntau yuav ua rau kev puas tsuaj rau cov neeg kho tshuab ua cov ntaub ntawv ua haujlwm yog tias cov ntaub ntawv tiv tshuaj tiv thaiv yog cov ntaub ntawv hluav taws xob kom ntsuas qhov hluav taws xob. Yog li no, txhua zaus ua ntej kev sim, thawj tus cwj pwm mus saib lub iav xaiv tsis yog, los tsim kev ntsuas zoo.
Cov taw tes muluslim ua luam yog qhov tsis zoo, lwm qhov zog tuaj yeem siv, qhia tias qhov sib txawv ntawm lub taub hau yog qhov zoo. Qhov no yog tshwm sim los ntawm kev siv tsis raug. There are two reasons for this, one is pulled in the DC current block when measuring the AC220V voltage burning current block of several small resistance value of the wire-wound resistor (regardless of what model pointer multimeter, they are wire-wound resistors, are wound with copper resistance wire, and the resistance value is very small, for example, the MF-47 type in four resistors, respectively, for 0.54ω 5.4ω 54ω 540ω). Tab sis hais txog tus Tswv tias pillionally tsuas yog tiv thaiv muaj teeb meem, tom qab ntawd tsis muaj teeb meem hauv cov block no.
Qhov thib ob yog tias; Rau cov khoom siv hluav taws xob tshiab, cov tshuab hluav taws xob, hauv kev siv ntau hom kev sib tw los yog kuaj cov iav sib txawv, thiab tom qab ntawd nyob rau hauv lub 220V pob lossis Jack los kuaj AC Zog tshwm sim los ntawm. Muaj ntau cov qauv thiab cov tuam ntxhab ntawm cov neeg siv cov neeg siv tshuaj ntau. Qhov feem ntau thiab siv ntau tshaj li qub 500- hom thiab nanjing ntau lawm mf {{3} HOM multimeter. Cov qab no mf -47 los soj ntsuam thiab daws cov teeb meem.
① mf {{{{0 Hom Piersion Jack, {}}}}} ma ~ 500ma.
Nws tau ncaj qha rau cov hluav taws xob tam sim no (DCV) yim feem ntau siv rau ib qho kev txuas ntxiv Jack uas tuaj yeem ntsuas DC25 {0 v. 0 ~ 0.25V ~ 1v ~ 1V ~ 2.5V ~ 10V ~ 50V ~ 250V ~ 500V ~ 1000V ~ 100V.
Nws muaj rau nres rau lwm cov hluav taws xob tam sim no (ACV), {}}}}}}}}} ™v ~ 2500v ~ 2500.
Nws muaj DC tus nqi tiv thaiv (ω) Tsib lub nres.r × 1k × 1 ~ 10ω, lub suab nrov yuav suab). Vim yog qhov chaw txwv, cais cov chaw taws teeb DC Amfrared Cov Chaw Taws Teeb Chaw Hloov Chaw Ntsuas Hluav Taws Xob thiab qib suab DB thiab lwm yam haujlwm.
Thawj qhov thaiv kev ntsuas, tus cwj mem dub tau tso rau hauv ib lub taub hau → Lub taub hau tsis zoo → 20.2 ws tiv, lawv yog txhua tus nyob rau hauv parallel nrog lub taub hau rau lub xeev. Thiab nyob rau lub sijhawm no, tus cwj mem liab tau tso rau hauv ob lub Nkaus los ntawm 1K Deseor thiab tom qab ntawd los ntawm ib qho kev tiv thaiv lub taub hau 1,5v Qhuav Hauv lub taub hau calibration r + → lub taub hau zoo + tus naj npawb. Nkag siab txog lub voj kaw yog qhov zoo, raws li kev paub ntawm tus kheej, koj tuaj yeem nrhiav raws txoj kev.
Nrog lwm qhov puv qhov ntsuas ntawm cov kev tiv thaiv no, qhov teeb meem dav dav tsuas yog hlawv qib tsis kam rub tawm thaum lub sijhawm tiv taus. Thiab cov tau tsim nyog rau cov tsis muaj txiaj ntsig ntawm cov tsis kam, koj tuaj yeem nrhiav tau ze rau cov hlau hluav taws xob tuaj yeem hloov pauv cov hlau-mob siab sib txawv.
