Tej yam koj yuav tsis paub txog digital multimeters!
Raws li kev ntsuas ntsuas uas hloov cov cwj mem hluav taws xob siv los ntawm cov neeg siv hluav taws xob thaum ntxov, kuv ntseeg tias feem ntau ntawm cov kws hluav taws xob yuav tsum tau siv nws. Lub multimeter yog ib qho cuab yeej uas ua ke nrog AC / DC voltage, tam sim no, kev ua haujlwm (qhov kev tshawb pom ntawm qhov kev ua haujlwm yog qhov txuas ntxiv ntawm kev ntsuas kev ua haujlwm), thiab ntau lwm yam kev ntsuas. pab loj. Vim qhov zoo ntawm qhov me me, lub teeb yuag, kev nyeem ntawv yooj yim thiab yooj yim, thiab ntsuas qhov tseeb, ntau hom digital multimeters tau dhau los ua cov cuab yeej siv rau feem ntau ntawm cov tshuab hluav taws xob (cov qauv classic suav nrog DT920X, VC97 series, thiab lwm yam). Hnub no, kuv yuav kawm qee qhov kev paub txog digital multimeters uas kuv tau sau thiab txheeb xyuas nrog kuv cov phooj ywg.
1. Thaum yuav ib lub multimeter digital, peb yuav zoo dua xaiv cov khoom nrog "AUTO POWER OFF (automatic shutdown)" muaj nuj nqi. Nyob rau hauv txoj kev no, qhov pov tseg ntawm lub zog los ntawm kev tsis nco qab kaw lub tshuab thaum siv tuaj yeem tiv thaiv, thiab kev pabcuam lub neej ntawm cov kua siv lead ua kua zaub tuaj yeem txuas ntxiv mus.
2. Yog tias ua tau, thaum ua qhov ntsuas qhov ntsuas tawm, sim tsis txhob siv lub zog siv hluav taws xob siab thiab ua haujlwm buzzing. Hloov chaw, koj tuaj yeem siv diodes lossis cov iav tiv thaiv nrog tib txoj haujlwm. Raws li kuv tus kheej kev sim, qhov sib txawv ntawm lub roj teeb lub neej ntawm multimeter nyob rau hauv ob rooj plaub yog ze li ob npaug!
3. Thaum cov lus qhia "tsis tshua muaj roj teeb" tshwm rau ntawm lub tshuab multimeter, txhua tus yuav tsum siv sijhawm los hloov lub roj teeb. Txwv tsis pub, thaum cuam tshuam qhov ntsuas qhov tseeb, qee qhov kev tswj xyuas hluav taws xob hauv lub tshuab hluav taws xob yuav raug "xauv" thiab lub tshuab multimeter tsis tuaj yeem qhib ib txwm! Kuv tau khawb ob lub multimeter kim vim qhov no, thiab kuv muaj kev nkag siab tob!
4. Nyob rau hauv tus txheej txheem ntawm kev siv lub multimeter, txhua leej txhua tus yuav tsum tau siv lub zog nruab nrab thaum flipping lub iav hloov, thiab tsis txhob sparks tag nrho txoj kev nrog xob laim bolts! Qhov no yog vim hais tias feem ntau (tshwj xeeb tshaj yog cov nrov version ntawm hluav taws xob ntsuas multimeters) multimeter iav hloov dua siab tshiab yog pom tau hais tias sib txawv ua ke ntawm cov ntawv tooj liab qis ntawm lub iav hloov thiab cov ntawv nyiaj tshwj xeeb ntawm cov ntawv luam tawm hauv PCB. Uninterrupted toggling lub iav hloov yuav inevitably nce qhov hnav ntawm daim ntawv tooj liab thiab tooj liab ntawv ci, uas yuav cuam tshuam rau qhov ntsuas qhov tseeb (hu rau kev tiv thaiv) thiab ua rau lub neej luv luv ntawm multimeter! Ib tug ntawm kuv cov npoj yaig ceev ceev tsis tau xyuam xim rau qhov kev nthuav dav no, thiab vim li ntawd tau teeb tsa cov ntaub ntawv ntawm kev rhuav peb lub multimeters hauv ib xyoos!
