Tus pointer multimeter yog qhov nruab nrab tus nqi ntsuas. Nws muaj ib qho intuitive thiab pom kev nyeem ntawv qhia.
(Qhov kev nyeem ntawv dav dav yog ze ze rau lub viav vias lub kaum sab xis ntawm lub pointer, yog li nws yog intuitive heev).
Ib qho digital multimeter yog qhov ntsuas tam sim ntawd. Nws yuav siv ib qho piv txwv txhua 0.3 vib nas this los tso saib cov txiaj ntsig ntsuas. Qee zaum cov txiaj ntsig ntawm txhua qhov piv txwv zoo sib xws. Lawv tsis yog tib yam nkaus. Qhov no tsis yooj yim npaum li hom pointer rau kev nyeem ntawv.
Analog multimeters feem ntau tsis muaj lub suab nrov sab hauv. Yog li ntawd, lub internal kuj yog me me. Piv txwv li, MF-10 hom muaj DC voltage rhiab heev ntawm 100 kΩ / V. Qhov no yog ib qho zoo. MF -500 DC voltage rhiab heev yog 20 kΩ / Volt.
Cov multimeter digital siv lub hauv paus op amp circuit. Sab hauv kuj tuaj yeem ua tau loj heev. Feem ntau nws yog 1M ohm lossis ntau dua. (Qhov ntawd yog, siab dua tuaj yeem tau txais). Qhov no ua rau qhov cuam tshuam ntawm Circuit Court nyob rau hauv kev sim me me. Kev ntsuas siab precision.
Vim hais tias sab hauv tsis kam ntawm tus pointer multimeter me me, thiab feem ntau ntawm cov khoom sib cais yog siv los ua ib qho shunt thiab voltage divider circuit. Yog li ntawd, cov yam ntxwv zaus tsis sib xws (xws li hom digital). Cov yam ntxwv zaus ntawm tus pointer hom multimeter kuj zoo dua.
Cov qauv sab hauv ntawm lub pointer hom multimeter yog qhov yooj yim, yog li tus nqi qis dua, kev ua haujlwm tsawg dua, kev saib xyuas yooj yim, thiab lub peev xwm overcurrent thiab overvoltage muaj zog.
Lub multimeter digital siv ntau yam oscillation, amplification, zaus division, kev tiv thaiv thiab lwm yam circuits, yog li nws muaj ntau lub zog, xws li ntsuas kub, zaus (nyob rau hauv ib tug qis ntau), capacitance, inductance, los yog raws li ib tug teeb liab generator thiab thiaj li nyob. .
Vim yog cov qauv sab hauv ntawm ntau lub hom phiaj kev sib koom ua ke, lub peev xwm dhau los tsis zoo. (Tab sis tam sim no qee qhov tuaj yeem hloov lub zog, cia li tiv thaiv, thiab lwm yam, tab sis kev siv yog qhov nyuaj dua). Feem ntau, nws tsis yooj yim los kho tom qab kev puas tsuaj.
Cov zis hluav taws xob ntawm cov digital multimeter yog tsawg (feem ntau tsis ntau tshaj 1 volt). Nws tsis yooj yim rau kev sim qee yam khoom siv nrog cov yam ntxwv tshwj xeeb (xws li thyristor, lub teeb-emitting diode, thiab lwm yam).
Cov zis voltage ntawm tus pointer multimeter yog siab dua, (10.5 volts, 12 volts, thiab lwm yam).
Tam sim no kuj loj (piv txwv li, MF-500*1 ohm iav muaj qhov siab tshaj plaws ntawm 100 mA), uas tuaj yeem kuaj tau yooj yim thyristors, lub teeb-emitting diodes, thiab lwm yam.
Rau beginners yuav tsum tau siv ib tug analog multimeter.
Rau cov tsis pib, yuav tsum siv ob meters.
