Kev tuav lub Motherboard Feem ntau siv multimeter, uas suav nrog ob qhov nres
Siv lub tshuab digital multimeter los kho cov motherboard, siv lub ntsiab ntawm ntau lub zog.
1: diode iav: siv los khiav txoj kab, ntsuas qhov tsis kam rau hauv av, ntsuas kab rau thiab tawm.
2: tiv thaiv thaiv yog siv los ntsuas tus nqi ntawm cov resistor nyob rau hauv lub motherboard.
3: DC 20V voltage thaiv, vim hais tias qhov siab tshaj qhov hluav taws xob ntawm lub motherboard tsuas yog 12V Kho ntawm lub motherboard yog tsuas yog los ntawm kev ntsuas qhov tsis kam rau hauv av, thiab cov nqi hluav taws xob hauv av los txiav txim qhov txhaum, siv los ntsuas qhov tam sim no tsawg dhau.
Digital multimeter ntsuas iav: DC voltage (DCV), AC voltage (ACV), DC tam sim no (DCA), AC tam sim no (ACA), tsis kam (Ω), diode rau pem hauv ntej voltage poob (VF), transistor emitter tam sim no amplification coefficient (hrg) , capacitance (C), conductivity (ns), kub (T), zaus (f), xyuas cov kab los ntawm lub buzzer (BZ), tsis tshua muaj zog txoj kev tsis kam (L{{0}}). Txoj kev ntsuas hluav taws xob (L0Ω). Qee cov cuab yeej muaj cov ntaub ntawv inductance, cov ntaub ntawv teeb liab, AC / DC tsis siv neeg hloov dua siab tshiab, cov ntaub ntawv capacitance tsis siv neeg hloov pauv ntau yam.
Feem ntau ntawm cov digital multimeters tau ntxiv cov haujlwm tshiab thiab kev sim ua haujlwm hauv qab no: nyeem tuav (Thov), ntsuas kev ntsuas (LOGIC), qhov tseeb RMS (TRMS), ntsuas tus nqi txheeb ze (RELΔ), tsis siv neeg kaw (AUTO OFF POWER) thiab lwm yam. .
Cov lus qhia rau kev siv multimeter:
(1) Ua ntej siv lub multimeter, nws yuav tsum "kho kho kom zoo rau xoom", piv txwv li, thaum tsis muaj qhov ntsuas hluav taws xob, ua rau lub ntsuas ntsuas ntsuas ntsuas ntawm qhov chaw ntawm xoom voltage lossis xoom tam sim no.
(2) Nyob rau hauv tus txheej txheem ntawm kev siv lub multimeter, koj yuav tsum tsis txhob kov cov hlau ib feem ntawm tus cwj mem nrog koj txhais tes, thiaj li yuav xyuas kom meej qhov tseeb ntawm kev ntsuas ntawm ib sab tes, thiab xyuas kom meej tus kheej kev nyab xeeb ntawm qhov tod tes.
(3) Thaum ntsuas qee qhov hluav taws xob, koj yuav tsum tsis txhob hloov lub iav tib lub sijhawm ntsuas, tshwj xeeb tshaj yog thaum ntsuas qhov hluav taws xob siab lossis siab tam sim no, koj yuav tsum tau them sai sai rau nws. Txwv tsis pub, lub multimeter yuav raug puas tsuaj. Yog tias koj xav tau hloov lub zog, koj yuav tsum xub txiav lub cwj mem, hloov lub zog thiab rov qab mus rau qhov ntsuas.
(4) Thaum siv lub multimeter, nws yuav tsum tau muab tso rau kab rov tav kom tsis txhob ua yuam kev. Nyob rau tib lub sijhawm, nws yuav tsum tau sau tseg kom tsis txhob muaj kev cuam tshuam ntawm sab nraud magnetic teb ntawm multimeter.
(5) Thaum siv cov multimeter tiav lawm, qhov hloov pauv hloov yuav tsum muab tso rau hauv qhov siab tshaj plaws ntawm AC voltage. Yog tias nws tsis siv sijhawm ntev, lub roj teeb hauv lub ntsuas hluav taws xob yuav tsum tau muab tshem tawm kom tsis txhob muaj roj teeb corrosion ntawm lwm cov khoom siv hauv lub ntsuas.
