Dab tsi yog Omega ntawm multimeter siv los ntsuas?
Cov ntaub ntawv Ω ntawm lub multimeter yog cov ntaub ntawv tiv thaiv, uas yog siv los ntsuas tus nqi ntawm cov resistor.
Digital multimeter nrog kev hloov pauv tsis siv neeg.
Phau ntawv ntau yam digital multimeter thiab tsis siv neeg ntau yam digital multimeter. Lawv siv tau yooj yim heev, kev ntsuas kev tiv thaiv, tus cwj mem liab tso rau hauv multimeter "VΩ" qhov, tus cwj mem dub tso rau hauv lub multimeter "COM" qhov, thiab tom qab ntawd lub multimeter ntau hloov mus rau qhov chaw ua haujlwm (saib saum toj no) , cov cwj mem liab thiab dub tau Hu rau ob tus pins ntawm qhov ntsuas qhov ntsuas tau tuaj yeem nyeem tawm tus nqi tsis kam ntawm qhov resistor.
Thaum ntsuas, rau lub multimeter nrog kev hloov pauv tsis siv neeg, tsis tas yuav xav txog qhov loj ntawm tus nqi tsis kam, lub multimeter tuaj yeem hloov mus rau qhov tsim nyog. Rau ib tug multimeter nrog phau ntawv hloov pauv, nws yog ib qho tsim nyog yuav tau kho qhov hloov pauv mus rau txoj haujlwm tsim nyog raws li qhov loj ntawm tus nqi tsis kam ua ntej ntsuas. Tsis tas li ntawd, ntau phau ntawv ntau yam multimeter, nws cov ntaub ntawv yam tsawg kawg nkaus kuj tsis tuaj yeem rov qab mus rau xoom, piv txwv li, 3 / ½ digital multimeter, nws cov ntaub ntawv 200 Ω hauv cov cwj mem liab thiab dub luv luv, cov zaub dav dav ntawm kev nyeem ntawv hauv xoom taw tes ob peb mus rau ib qho taw tes ob peb Ω (qhov kev nyeem me me no yog qhov zoo dua), yog li hauv kev ntsuas ntawm 10 Ω lossis tsawg dua ntawm qhov kev tiv thaiv me me, yuav tsum tau muab tso rau hauv kev nyeem ntawv rho tawm cov ntawv nyeem ntawm cov cwj mem liab thiab dub luv luv. , yog li ntawd qhov tshwm sim yog qhov tseeb tsis kam nqi ntawm ib qho me me Qhov tshwm sim yog qhov tseeb tus nqi ntawm cov resistor me me.
Peb feem ntau siv cov multimeter los ntsuas AC voltage, DC voltage, tsis kam thiab lwm yam.
Yuav ua li cas los ntsuas kev tiv thaiv: thawj hloov iav los ntsuas qhov kev tiv thaiv ntawm lub iav, txhawm rau kuaj cov khoom ntawm cov hlau ntawm ob qho kawg tau raug hu mus rau lub koob hlau ntawm lub ntsuas mem, yog tias muaj lub suab nrov, tias cov xaim los ntawm, txwv tsis pub txiav. .
Yuav ua li cas ntsuas AC voltage: thawj hloov iav los ntsuas qhov AC voltage ntawm lub iav, lub ntsuas mem mem hlau koob tiv tauj los kuaj seb puas muaj qhov hluav taws xob ntawm cov terminals, yog tias muaj qhov ntsuas hluav taws xob digital yuav qhia tias tus nqi hluav taws xob ntau npaum li cas. .
Yuav ua li cas kuaj qhov DC voltage: thawj hloov iav mus rau DC voltage ntsuas iav, lub meter cwj mem hlau koob tiv tauj los kuaj seb puas muaj qhov hluav taws xob ntawm cov terminals, yog tias muaj qhov ntsuas hluav taws xob digital yuav qhia tias tus nqi hluav taws xob ntau npaum li cas. Yog hais tias lub taub hau liab meter yog tus ncej zoo ntawm qhov hluav taws xob, tus nqi ntawm qhov kev ntsuam xyuas yog qhov zoo, xws li Li, lub taub hau liab meter yog qhov tsis zoo ntawm qhov hluav taws xob, tus nqi ntawm qhov ntsuas yog qhov tsis zoo.
3. Muaj kev nyab xeeb ua haujlwm ntawm cov qauv thiab kev nkag siab zoo.
Nyob rau hauv peb lub neej txhua hnub, yog tias, ntsib cov hlau hlawv, lub teeb hlawv tawm, lossis xav tau kev ua haujlwm hluav taws xob. Yuav tsum nug tus kws tshaj lij los ua haujlwm. Tshwj xeeb, koj yuav tsum xub txiav lub hwj chim, xyuas lub hwj chim, dai daim ntawv ceeb toom. Hnav cov khau insulated, muab cov hnab looj tes insulated, ob tus neeg ua haujlwm. Tsuas yog peb nyob hauv peb lub neej niaj hnub los txhim kho kev paub txog kev nyab xeeb ntawm hluav taws xob, tsis yog cov xov hlau ntiag tug, arbitrary nce siab-voltage ncej thiab lwm yam. Tsuas yog peb txhua tus ua haujlwm raws li cov qauv, txhawm rau siv hluav taws xob zoo tib lub sijhawm kom ntseeg tau tias peb tus kheej muaj kev nyab xeeb.
