FAQ ntawm lub hauv paus ntawm kev siv digital multimeter
1. Dab tsi yog buzzer muaj nuj nqi siv rau?
Teb: Lub buzzer muaj nuj nqi yog ib qho ntxiv feature ntawm lub multimeter, feem ntau teem rau 2K Ω. Nws feem ntau yog siv los ua suab nrov hauv lub suab thaum ntsuas circuits (lossis resistors) nrog qhov tsis kam ntawm 50 Ω lossis tsawg dua. Qhov kev ua haujlwm no ua lub luag haujlwm tseem ceeb hauv kev siv cov tswv yim thiab tuaj yeem txhim kho qhov ua tau zoo ntawm kev ntsuas Circuit Court txuas ntxiv. Nws yog ib qho tseem ceeb ua haujlwm rau kev kho hluav taws xob.
2. Vim li cas lub tshuab hluav taws xob digital tsis rov qab mus rau xoom thaum luv luv Circuit Court hauv 200 Ω ntau?
Teb: Nyob rau hauv 200 Ω ntau yam, vim qhov tsis kam ntawm Circuit Court, ntsuas sab hauv tsis kam, thiab cov ntsiab lus tiv tauj, qee tus lej tus lej yog qhov qub thaum luv luv Circuit Court. Cov nab npawb ntawm tus Tsov tus tw yuav loj dua thaum siv thiab tsis tuaj yeem hloov kho, tab sis tuaj yeem txo qis los ntawm kev txhuam ntawm lub rooj tsav xwm Circuit Court thiab ceev cov ntsiab lus sib cuag. Koj tuaj yeem luv-circuit nws thaum siv, sau tus nqi, thiab rho tawm ntawm qhov ntsuas.
3. Yuav ua li cas txiav txim siab seb lub tshuab multimeter puas zoo?
Teb: Qhov no yog ib lo lus nug loj, thiab kev sim txhua qhov kev ua haujlwm yog ib txoj hauv kev zoo. Thaum kuaj, nws yog ib qho tsim nyog yuav tsum xub nrhiav qhov chaw sim, tab sis feem ntau nws tsis yooj yim rau cov neeg siv tuaj yeem nqa lawv tus kheej cov qauv ntsuas qhov chaw, yog li cov txheej txheem zoo thiab ntau me ntsis tuaj yeem siv rau kev sim dav dav. Qhov kev daws teeb meem yooj yim yog nrhiav qhov chaw tshawb nrhiav thiab siv nws ib zaug raws li cov lus qhia.
4. Yuav ua li cas calibrate ib tug multimeter?
Teb: Zoo li lwm yam ntsuas ntsuas, multimeters yog ntsuas los ntawm cov chaw tsim khoom ua ntej tawm hauv lub hoobkas. Yog li ntawd, yog tias tsis muaj teeb meem loj lossis pom tseeb, thov tsis txhob kho lawv arbitrarily. Lub multimeter tam sim no feem ntau muaj lub taub hau voltmeter, yog li thaum calibrating lwm lub zog, nws yog ib qho tsim nyog yuav tsum tau ua ntej calibrate DC voltage iav, uas yog hu ua lub hauv paus iav los ntawm kev lag luam sab hauv. Yog tias cov iav no tsis raug, yuav luag txhua lub iav thiab kev ua haujlwm (tshwj tsis yog cov iav tiv thaiv) yuav tsis raug. Feem ntau, multimeter yuav teeb ib lub potentiometer (xws li DC voltage hom) lossis ntau lub potentiometers (xws li hom kub) rau txhua qhov haujlwm, thiab tseem muaj cov uas tsis muaj potentiometers (xws li hom tsis kam). Nws yooj yim ua nrog potentiometers. Tsuas yog nkag mus rau qhov teeb meem nrhiav pom thiab kho nws ncaj qha; Yog tsis muaj potentiometer, feem ntau tsis muaj misalignment. Nyob rau hauv cov ntaub ntawv ntawm misalignment, tej zaum yuav tshwm sim los ntawm cov cuab yeej puas los yog tsis zoo Circuit Court tiv tauj.
5. Yuav ua li cas txiav txim siab (kuaj) seb qhov DC voltage range (DCV) ntawm multimeter puas zoo?
Teb: Thaum kuaj, thawj kauj ruam yog nrhiav qhov chaw kuaj. Raws li peb muaj qhov zoo nrog qhov ntsuas me me, muaj ntau qhov kev sim muaj. Cov khoom siv kuaj hauv tsev muaj xws li 1.5V alkaline / carbon roj teeb (No. 1, No. 5 / AA, No. 7 / AAA), 1.2V roj teeb rechargeable, lub xov tooj ntawm tes chargers, fais fab adapters, thiab lwm yam. Thaum kuaj, tig lub multimeter mus rau qhov xav tau DC voltage ntau, ntxig cov probes raws li cov lus qhia, txuas qhov chaw kuaj, thiab nyeem cov ntawv nyeem ntawm LCD. Tsuav tus nqi ntsuas nyob ib ncig ntawm lub nominal voltage, nws yog txaus.
