Dab tsi yog qhov zoo ntawm cov multimeter li niaj zaus thiab digital multimeter
Ib tug pointer multimeter yog ib qho nruab nrab hom ntsuas nrog intuitive thiab pom kev nyeem ntawv qhia
(Feem ntau, tus nqi nyeem ntawv yog ze ze rau lub viav vias lub kaum sab xis ntawm tus taw tes, yog li nws yog qhov yooj yim heev)
Ib qho digital multimeter yog ib qho ntsuas ntsuas tam sim uas siv cov qauv coj txhua txhua 0.3 vib nas this los qhia cov txiaj ntsig ntsuas. Qee zaum, txhua qhov kev kuaj pom tsuas yog zoo sib xws thiab tsis zoo ib yam. Qhov no tsis yooj yim rau kev nyeem cov txiaj ntsig raws li hom pointer
Ib tug pointer multimeter feem ntau tsis muaj lub amplifier nyob rau hauv, yog li nws sab hauv kuj yog me me. Piv txwv li, MF-10 qauv muaj DC voltage rhiab heev ntawm 100 kiloohms/volt. Qhov no suav hais tias zoo heev. Tus qauv MF-500 muaj DC voltage rhiab heev ntawm 20 kiloohms/volt
Vim yog kev siv sab hauv ntawm kev ua haujlwm amplifier Circuit Court, cov multimeter digital tuaj yeem muaj qhov loj hauv kev tiv thaiv, feem ntau ntawm 1M ohms lossis siab dua (piv txwv li, qhov siab dua tuaj yeem tau txais). Qhov no tso cai rau muaj kev cuam tshuam me me ntawm qhov ntsuas hluav taws xob thiab ntsuas qhov tseeb dua
Vim lub me me nyob rau hauv tsis kam thiab siv cov discrete Cheebtsam los tsim ib tug shunt voltage divider Circuit Court, zaus cov yam ntxwv ntawm ib tug pointer hom multimeter yog tsis sib xws (piv rau cov digital). Txawm li cas los xij, 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 nws cov nqi qis. Nws muaj kev ua haujlwm tsawg dua, kev saib xyuas yooj yim, thiab muaj zog overcurrent thiab overvoltage peev xwm
Lub multimeter digital siv ntau yam hauv oscillation, amplification, zaus division, tiv thaiv circuits, thiab lwm yam., yog li nws muaj ntau yam functions, xws li ntsuas kub, zaus (nyob rau hauv ib tug qis ntau), capacitance, inductance, los yog raws li ib tug teeb liab generator.
Vim yog kev siv ntau yam sib xyaw ua ke hauv cov qauv sab hauv, lub peev xwm dhau los tsis zoo (Txawm li cas los xij, qee tus ntawm lawv tam sim no tuaj yeem hloov lub zog, tiv thaiv lawv tus kheej, thiab lwm yam, tab sis lawv siv ntau dua). Tom qab kev puas tsuaj, nws 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, xws li 10.5 volts, 12 volts, thiab lwm yam.
Tam sim no kuj loj (xws li MF-500 * 1 ohm ntau yam, uas yog hais txog 100 milliamperes), ua kom yooj yim rau kev sim thyristors, lub teeb-emitting diodes, thiab lwm yam.
Rau beginners yuav tsum tau siv ib tug pointer hom multimeter
Rau cov tsis pib, ob hom twj paj nruag yuav tsum tau siv
