Qhov zoo thiab qhov tsis zoo ntawm cov multimeters niaj hnub thiab digital multimeters
Ib tug pointer multimeter yog qhov ntsuas tus nqi nruab nrab. Nws muaj intuitive thiab pom kev nyeem ntawv ntsuas
(Feem ntau, tus nqi nyeem ntawv yog ze ze rau lub pointer viav vias lub kaum sab xis, yog li nws yog qhov yooj yim heev)
Ib qho digital multimeter yog qhov ntsuas ntsuas tam sim. Nws siv cov qauv coj los ua txhua txhua 0.3 vib nas this los qhia cov txiaj ntsig ntsuas. Qee zaum, cov txiaj ntsig ntawm txhua tus qauv tsuas yog zoo sib xws thiab tsis zoo ib yam. Qhov no tsis yooj yim rau kev nyeem cov txiaj ntsig raws li cov ntsuas ntsuas ntsuas
Ib tug pointer multimeter feem ntau tsis muaj lub amplifier sab hauv, yog li qhov kev tiv thaiv sab hauv kuj yog me me. Piv txwv li, MF-10 hom muaj DC voltage rhiab heev ntawm 100 kWh / V. Qhov no tuaj yeem suav hais tias yog ib qho zoo nkauj Lub DC voltage rhiab heev ntawm MF-500 qauv yog 20 kiloohms ib volt
Cov multimeters digital, vim yog siv cov kev ua haujlwm amplifier circuits sab hauv, tuaj yeem muaj lub zog sab hauv, feem ntau nyob ib ncig ntawm 1M ohms lossis ntau dua Qhov no tso cai rau kev cuam tshuam qis dua ntawm qhov ntsuas hluav taws xob thiab ntsuas qhov tseeb dua.
Vim nws qhov tsis kam sab hauv thiab siv cov khoom sib cais los tsim cov shunt thiab voltage divider circuits, pointer multimeters muaj cov yam ntxwv tsis sib xws (piv rau cov digital). Txawm li cas los xij, pointer multimeters muaj cov yam ntxwv zoo dua
Tus pointer hom multimeter muaj cov qauv sab hauv yooj yim, uas ua rau nws raug nqi. Nws muaj kev ua haujlwm tsawg dua, yooj yim los tswj, thiab muaj zog overcurrent thiab overvoltage peev xwm
Cov multimeter digital siv ntau yam oscillation, amplification, zaus division, tiv thaiv thiab lwm yam circuits sab hauv, yog li nws muaj ntau lub zog, xws li ntsuas kub, zaus (nyob rau hauv ib tug qis ntau), capacitance, inductance, los yog ua hauj lwm raws li ib tug teeb liab generator, thiab lwm yam.
Vim yog kev siv cov kev sib xyaw ua ke hauv cov qauv sab hauv, lub peev xwm dhau los tsis zoo (Txawm li cas los xij, qee qhov tam sim no muaj peev xwm hloov pauv tsis siv neeg, kev tiv thaiv tsis siv neeg, thiab lwm yam, tab sis kev siv ntau dua). Cov uas puas lawm feem ntau tsis yooj yim kho
Cov zis hluav taws xob ntawm digital multimeter yog qhov tsawg (feem ntau tsis tshaj 1 volt). Nws tsis yooj yim rau kev sim qee yam khoom siv nrog cov yam ntxwv tshwj xeeb (xws li thyristors, lub teeb-emitting diodes, thiab lwm yam).
Cov zis voltage ntawm tus pointer multimeter yog qhov siab (suav nrog 10.5 volts, 12 volts, thiab lwm yam)
Cov tam sim no kuj siab (xws li MF-500 * 1 nrog qhov siab tshaj plaws ntawm 100mA hauv European ntau), uas ua rau nws yooj yim rau kev sim thyristors, lub teeb-emitting diodes, thiab lwm yam.
