Qhov zoo thiab qhov tsis zoo: analog multimeters vs. digital multimers
Tus taw tes mulceter yog ib qho nruab nrab tus nqi muaj nuj nqis nws yog intuitive pom kev 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 cov qauv sib txuas nws yuav siv cov kev ntsuas txhua qhov no tsis yooj yim dua li cov txiaj ntsig kev nyeem ntawv
Ib qho kev taw tes hluav taws xob sib xyaw feem ntau tsis muaj qhov ua kom zoo tshaj plaws ntawm cov lej DC qhov tseeb ntawm cov lej DC
Cov digital multimimeter siv cov haujlwm ua haujlwm hauv nruab nrab ntawm kev ntsuas sab hauv yog qhov kev ntsuas siab dua) qhov no ua rau muaj kev ntsuas ntau qhov ntsuas qhov ntsuas tau qhab nia siab
Pointer multimeters muaj qis sab hauv kev tsis kam thiab feem ntau cov yam ntxwv ntawm cov khoom siv digital) yog cov yam ntxwv ntawm tus pointer zoo dua yog qhov zoo dua
Tus pointer hom multimeter muaj cov qauv sab hauv cov qauv yooj yim, yog li tus nqi yog qhov tsis muaj kev pab tsawg dua kom muaj zog overcurrent thiab overvoltes muaj zog
Tus
Cov digital multively siv ntau qhov me me oscillations thiab amplifeciers rau kev tiv thaiv kev tiv thaiv kev tiv thaiv ntau yam) capacitors, inductors lossis ua rau lub tshuab hluav taws xob, thiab lwm yam
Vim tias siv cov kev sib xyaw ua ke hauv cov qauv sab hauv, txawm li cas los xij, tab sis siv yog cov khoom siv hluav taws xob, nws yog feem ntau tsis yooj yim kho
The output voltage of a digital multimeter is relatively low (usually not exceeding 1 volt) It is inconvenient to test some components with special voltage characteristics, such as thyristors, light-emitting diodes, etc
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 rau kev sim ua kom nws yooj yim rau kev sim cov thyristors, lub teeb-emitting diodes, thiab lwm yam
