Kev sib piv ntawm qhov ntsuas sib txuam thiab cov digital motalimeter
Tus taw tes multimeter yog qhov nruab nrab tus nqi ntawm intuitive thiab kev pom nyeem ntawv. (Feem ntau, tus nqi nyeem ntawv yog ze ze rau tus pointer viav sab puag kaum, yog li nws yog heev intuitive). Ib qho digital pululimeter yog qhov ntsuas nruj heev. Nws siv cov neeg ntsuas txhua 0. 3 vib nas this}. Qee zaum cov txiaj ntsig zoo ib yam nkaus thiab tsis yooj yim heev thiab tsis yooj yim rau cov txiaj ntsig 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, lub mf {-10 hom muaj DC voltage rhiab ntawm 100 kiloohms rau ntawm cov hluav taws xob. Lub DC voltage rhiab ntawm mf {{2} 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.
Vim kev siv ntau cov qauv sib xyaw ua ke hauv nws sab hauv, cov motioners digital muaj kev tiv thaiv tsis zoo, 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 cov khoom siv nrog cov yam ntxwv tshwj xeeb, xws li thyristors thiab lub teeb-emitting diodes. Cov zis hluav taws xob ntawm tus pointer multimimeter yog tus siab (suav nrog 10.5 volts, 12 volts, thiab lwm yam). Tam sim no tseem muaj siab (xws li mf -500 * 1 nrog qhov siab tshaj plaws ntawm kev sim siab tshaj plaws, lub teeb pom kev zoo
