Kev ntsuas ntau yam ntawm cov yam ntxwv ntawm lub multimeter
(1) AC thiab DC voltage (AC zaus yog 45Hz-500Hz); qhov ntau yog 200mV, 2V, 20V thiab 1000 raws li, qhov tseeb DC yog qis dua ± (0.8 feem pua ntawm kev nyeem ntxiv rau 2 tus lej), thiab AC qhov tseeb yog ± (ntawm kev nyeem 1 feem pua ntxiv rau 5 cim ); input impedance, DC cov ntaub ntawv yog 10MΩ, AC cov ntaub ntawv yog 10MΩ, 100PF.
⑵ AC thiab DC tam sim no
Kev ntsuas qhov ntsuas yog 200μA, 2mA, 200mA thiab 10A. DC qhov tseeb yog ± (1.2 feem pua ntawm kev nyeem ntawv ntxiv rau 2 tus lej), AC qhov tseeb yog ± (2.0 feem pua ntawm kev nyeem ntxiv rau 5 tus lej), thiab qhov siab tshaj plaws voltage load yog 250mV (AC rms).
⑶ Tsis kam:
Kev ntsuas ntau yog: 200Ω, 2kΩ, 200kΩ, 20MΩ thiab 20MΩ rau qib. Qhov tseeb yog ± (2.0 feem pua ntawm kev nyeem ntawv ntxiv rau 3 tus lej).
⑷ Diode conduction voltage:
Kev ntsuas ntau yog {{0}} ~ 1.5V, thiab qhov ntsuas tam sim no yog 1mA ± 0.5 mA.
(5) Transistor tus nqi ntsuas:
Cov xwm txheej xeem yog: VCE=2.8V, IB=10μA.
⑹ Kev kuaj xyuas luv luv:
Test Circuit Court kuj<20Ω±10Ω
Kev ntsuas qhov tsis kam ntawm Digital Multimeter
Ntxig cov hlau kuaj liab rau hauv "V / Ω" jack, xaiv qhov kev ntsuas qhov ntsuas tsim nyog raws li qhov loj ntawm qhov tsis kam, kov cov xim liab thiab xim dub ua rau ob qho kawg ntawm qhov kev tawm tsam, thiab saib xyuas kev nyeem ntawv. Tshwj xeeb, thaum ntsuas qhov kev tawm tsam ntawm lub voj voog (qhov kev tawm tsam ntawm lub rooj tsav xwm hauv Circuit Court), lub zog hluav taws xob ntawm lub voj voog yuav tsum raug muab tua ua ntej, thiaj li tsis ua rau kev nyeem ntawv rau jitt. Nws yog txwv tsis pub siv cov iav tiv thaiv los ntsuas qhov tam sim no lossis qhov hluav taws xob (tshwj xeeb yog AC 220V voltage), txwv tsis pub nws yooj yim rau kev puas tsuaj rau multimeter. Tsis tas li ntawd, cov ntaub ntawv tiv thaiv kuj tuaj yeem siv los txiav txim siab seb lub capacitor zoo lossis phem. Ua ntej luv luv Circuit Court ob tug ncej ntawm lub capacitor (kov ob tug ncej nrog ib tug xeem txhuas nyob rau tib lub sij hawm kom tso tawm lub capacitor), ces kov ob lub xeem coj ntawm lub multimeter mus rau ob tug ncej ntawm lub capacitor raws li, thiab soj ntsuam cov displayed. tsis kam nyeem ntawv. Yog hais tias qhov kev nyeem ntawv tsis pom nyob rau thaum pib yog me me (sib npaug rau luv luv Circuit Court), ces lub capacitor pib them, qhov kev nyeem ntawv tsis zoo yuav maj mam nce, thiab thaum kawg qhov kev nyeem ntawv pom tau dhau los ua "1" (sib npaug rau qhov qhib Circuit Court) , qhia tias lub capacitor yog OK Yog hais tias cov kauj ruam saum toj no tau ua raws thiab cov ntawv nyeem kuj tseem tsis hloov, nws txhais tau hais tias lub capacitor puas lawm (qhib Circuit Court lossis luv luv). Kev saib xyuas tshwj xeeb yuav tsum tau them rau kev xaiv ntawm qhov tsim nyog tiv thaiv raws li qhov loj ntawm lub peev xwm thaum ntsuas, piv txwv li, 200k ntau rau 47μF, 2M ntau rau 4.7μF, thiab lwm yam.
