Analog da Digital Multimeter | Yadda Ake Koyar Da Zai, Ingantaccen Zaɓi ɗin Da Ta Baka ƙarin Da Sunan An Matukar Tsari

A nan da shi ne cewa multimeters sunan alama mai zafi da ake amfani da su wajen bincike abubuwa masu kawo karfi kamar voltage, current, da resistance. Multimeters suna nufin da duka biyu na raka: analog da digital. Zababin da ke maimakon multimeters analog da digital yana kan hanyar da suke nuna abubuwan da aka bincika - multimeters analog suna amfani da pointer mai yawa a matsayin scale, musamman idan digital multimeters sun nuna abubuwan da digits. A cikin wannan tushen, za mu iya duba zabubbukan da dama bayan waɗannan labaran.

Comparison Chart

Definition of Analog Multimeter

Analog multimeter shine wata na multimeter da ke amfani da needle ko pointer mai yawa a matsayin scale don bincike abubuwan kawo karfi kamar voltage, current, da resistance. Idan an yi bincike, ta haka ta fitaccen bayanai a matsayin analog - musamman, da deflection ta pointer wanda ya nuna ma'ana a matsayin scale. Yadda ake nuna pointer a matsayin scale yana nuna tsarin abubuwan da aka bincika.

A tsohon, analog multimeter yana da moving-coil meter (ko galvanometer) da needle da ake fada zuwa drum mai yawa. Wannan drum yana ciki a matsayin poles na magnet mai zurfi, da wire coil mai haske da ake gurbin ita.

Prinsipin da ake amfani da shi yana kan electromagnetic deflection. Idan current da za a bincika yake dogara a matsayin coil, ta zai samun magnetic field. Wannan field zai haɗa da magnetic field na permanent magnet, ta zai samun torque wanda zai haɗa da coil da drum da ake fada zuwa yawan yau da kullum. Saboda haka, pointer zai deflection a matsayin scale.

Yadda ake nuna pointer yana kan small control springs da ake fada zuwa drum. Wannan springs sun ba counteracting force wanda yake ƙare da deflection, har zuwa lokacin da ake tabbatar da electromagnetic torque. Wannan equilibrium yana nuna ƙaramin yadda ake nuna pointer, wanda ta haka ta nuna abubuwan da aka bincika. Scale yana da kalibrashin don in iya karanta voltage, current, ko resistance saboda funtion da aka zaba.

Definition of Digital Multimeter

Digital multimeter (DMM) shine wata na multimeter da ke nuna abubuwan da aka bincika a matsayin digits a matsayin LCD ko LED display. Daga lokacin da suka faru, digital multimeters suna hakkin multimeters analog a duk abubuwan saboda albashi masu da suke da shi, kamar accuracy masu yawan, readability masu sauki, input impedance masu yawan, da features masu yawa kamar auto-ranging da data logging.

Tsohon components na digital multimeter sun hada da display unit, signal conditioning circuits, analog-to-digital converter (ADC), da encoding circuitry. ADC yana da muhimmiyar rolin da ke convert the conditioned analog input signal into a digital value wanda ake iya process and display.

Misali, idan an yi bincike resistance na resistor, DMM yana amfani da constant current da ake samun daga internal current source through the resistor. Voltage drop across the resistor zai bincika, zai amplifi by a signal conditioning circuit, da zai feed into the ADC. ADC zai convert this analog voltage into a digital signal, wanda ake process to calculate the resistance value. Wannan result zai nuna a matsayin digits on the LCD screen, providing a clear and precise reading of the unknown resistance.

Conclusion

In summary, a multimeter—whether analog or digital—functions as a versatile, all-in-one instrument capable of performing the tasks of an ammeter, voltmeter, and ohmmeter. It can individually measure and display current, voltage, and resistance, consolidating the functionality of these three separate instruments into a single, portable device. This integration makes the multimeter an indispensable tool in electrical and electronic testing and troubleshooting.