Handheld multimeter piv rau digital multimeter
Pointer multimeter yog ib hom kev ntsuas qhov nruab nrab-tus nqi, uas muaj kev nkag siab zoo, pom qhov pom ntawm kev nyeem ntawv. (Kev nyeem ntawv dav dav yog ze ze rau lub kaum sab xis ntawm lub viav vias ntawm tus taw tes, yog li nws yog qhov yooj yim heev). Digital multimeter yog ib qho cuab yeej tam sim no. Nws siv 0.3 vib nas this los coj tus qauv los qhia cov txiaj ntsig ntsuas, qee zaum txhua qhov kev ntsuas ntsuas tsuas yog zoo sib xws, tsis zoo ib yam, uas tsis yooj yim li nyeem cov txiaj ntsig ntawm hom pointer.
Pointer multimeter feem ntau tsis muaj lub tshuab hluav taws xob sab hauv, yog li kev tiv thaiv sab hauv me me, xws li MF-10 hom, DC voltage rhiab heev ntawm 100 kilohm/volt, MF-500 hom DC voltage rhiab heev ntawm 20 kilohm/volt. Digital multimeter vim kev siv sab hauv ntawm op amp Circuit Court, qhov kev tiv thaiv sab hauv tuaj yeem ua tau loj heev, feem ntau hauv 1M ohms lossis ntau dua. (piv txwv li qhov siab dua tuaj yeem tau txais). Qhov no tso cai rau kom muaj kev cuam tshuam tsawg dua ntawm Circuit Court hauv kev sim thiab ntsuas qhov tseeb dua.
Pointer multimeter vim qhov me me nyob rau hauv tsis kam, thiab ntau discrete Cheebtsam los tsim ib tug shunt thiab voltage divider circuit. Yog li cov yam ntxwv zaus tsis sib xws (xws li digital), thaum cov yam ntxwv zaus ntawm tus pointer multimeter kuj zoo. Pointer multimeter sab hauv qauv yog yooj yim, yog li tus nqi qis dua, kev ua haujlwm tsawg dua, kev saib xyuas yooj yim, dhau-tam sim no dhau-voltage muaj peev xwm muaj zog dua. Digital multimeter sab hauv siv ntau yam oscillation, amplification, crossover tiv thaiv thiab lwm yam circuits, yog li ntau zog. Piv txwv li, nws tuaj yeem ntsuas qhov kub thiab txias, zaus (hauv qhov qis), capacitance, inductance, ua teeb liab generator thiab lwm yam.
Digital multimeter vim yog cov qauv sab hauv ntawm ntau qhov sib xyaw ua ke kom lub peev xwm dhau qhov tsis zoo, (tab sis tam sim no qee qhov tau tuaj yeem hloov pauv, tsis siv neeg tiv thaiv, thiab lwm yam, tab sis kev siv ntau dua), kev puas tsuaj feem ntau tsis yooj yim kho. . Digital multimeter tso zis voltage tsawg (feem ntau tsis ntau tshaj 1 volt). Rau qee qhov hluav taws xob cov yam ntxwv ntawm cov khoom tshwj xeeb ntawm qhov kev sim tsis yooj yim (xws li silicon tswj, lub teeb-emitting diodes, thiab lwm yam). Pointer multimeter tso zis voltage yog siab, (10.5 volts, 12 volts, thiab lwm yam). Tam sim no kuj loj (xws li MF-500 * 1 ohm iav qhov siab tshaj plaws ntawm 100 mA los yog li ntawd) tuaj yeem yooj yim rau kev sim SCR, lub teeb-emitting diodes thiab lwm yam.
