Taw qhia rau qhov zoo thiab qhov tsis zoo ntawm analog multimeters thiab digital multivers
Ib qho digital pululimeter yog qhov ntsuas nruj heev. Nws siv cov kev ntsuas txhua 0.3 vib nas this los ua cov kev ntsuas kev ntsuas, thiab qee zaum cov kev coj ua tau zoo ib yam nkaus thiab tsis yooj yim heev thiab tsis yooj yim rau cov kev nyeem ntawv.
Ib tus taw tes sib xyaw feem ntau tsis muaj qhov nrov nrov sab hauv, yog li sab hauv kev tsis kam yog me me. Piv txwv li, MF-10 hom muaj DC voltage rhiab heev ntawm 100 kiloohms rau ntawm lub volt. DC voltage rhiab ntawm MF-500 qauv yog 20 kiloohms rau ntawm volt.
Vim tias kev siv sab hauv kev ua haujlwm ua haujlwm, sab hauv tsis kam ntawm cov tshuaj lom digital muaj peev xwm ua tau loj heev, feem ntau ntawm 1m ohms lossis siab dua. (piv txwv li siab dua rhiab tuaj yeem tau txais). Qhov no ua rau muaj kev cuam tshuam rau kev sim ntsuas hluav taws xob me dua thiab ntsuas qhov ntsuas qhov tseeb siab dua.
Tus taw qhia cov neeg muaj cov neeg muaj cov neeg muaj kev tiv thaiv muaj qis sab hauv kev tsis kam thiab feem ntau siv shunt thiab voltage divider vojrits. Yog li cov yam ntxwv tsis sib xws yog qhov tsis sib xws (piv rau digital), thaum cov yam ntxwv zaus ntawm tus pointer muaj zoo dua.
Lub pointer hom multimeter muaj cov qauv sab hauv, yog li nws muaj cov nqi qis dua, kev saib xyuas tsawg dua, thiab muaj zog overcurrent thiab overvoltes muaj peev xwm. Cov digital multimeter ntau ntau oscillation, furnification, zaus kev tiv thaiv kev tiv thaiv sab hauv, yog li nws muaj cov haujlwm ntau dua. Piv txwv li, nws tuaj yeem ntsuas kub, zaus (capital (capital), kev tsis sib xws, thiab siv los ua lub tshuab hluav taws xob, thiab lwm yam.
Digital multiveters muaj kev tsis zoo muaj peev xwm vim yog siv ntau yam kev sib xyaw ua ke hauv lawv sab hauv, tab sis feem ntau tsis yooj yim kho tom qab kev puas tsuaj. Cov zis hluav taws xob ntawm cov digital pultimeter yog qhov tsawg (feem ntau tsis tshaj 1 volt). Nws tsis yooj yim los sim qee yam nrog cov yam ntxwv tshwj xeeb, xws li thyristors thiab lub teeb {{em} emnitting diodes.
Cov zis hluav taws xob ntawm tus pointer multimimeter yog tus siab (suav nrog 10.5 volts, 12 volts, thiab lwm yam). Qhov tam sim no tseem loj (xws li mf - 500 uro ntau * nrog qhov yooj yim los sim cov thyristors, lub teeb-emitting diodes, thiab lwm yam.
