Uphawu lokumelana namamitha amaningi (Imanuwali nezithombe)

I-multimeter yinto edingekayo yokuhlola imishini kagesi. Kubalulekile ukwazi uphawu lwe-Om ukuze ulusebenzise ngendlela efanele. Abantu abasebenza ngogesi bayakwazi ukufunda ama-multimeters nezimpawu zabo, kodwa u-Joe/Jane ojwayelekile angase adinge usizo oluthile, yingakho silapha.

Kunamathiphu amaningana nezici zokufunda amapharamitha afana nama-ohms, amandla, ama-volts nama-milliamp, futhi noma ubani angakwazi ukufunda imitha kahle.

Ukuze ufunde uphawu lokumelana lwe-multimeter, udinga ukuqonda okuyisisekelo i-voltage, ukumelana nokuqhubeka kokufunda; umbono mayelana nokuhlolwa kwe-diode ne-capacitance, ibanga lemanuwali nele-auto, nezixhumi nezinkinobho.

Izimpawu zama-Multimeter odinga ukuzazi

Lapha sizoxoxa nge-voltage, ukumelana nokuqhubeka.

• I-Voltage isiza ukukala i-voltage yamanje (DC) eqondile kanye ne-alternating current (AC) voltage. Ulayini we-wavy ngaphezu kuka-V ubonisa amandla kagesi we-AC. Ulayini V onamachashazi noqinile ubonisa i-DC voltage. I-mV enechashazi elilodwa kanye nomugqa owodwa we-wavy isho ama-millivolts AC noma i-DC.
• Okwamanje kungaba yi-AC noma i-DC futhi kukalwa ngama-ampere. Ulayini we-wavy umele i-AC. U-A onomugqa wamachashazi owodwa nomugqa owodwa oqinile ubonisa i-DC.(1)
• I-multimeter nayo isetshenziselwa ukuhlola isekethe evulekile kusekethe kagesi. Kunemiphumela emibili yokulinganisa ukumelana. Kokunye, isifunda sihlala sivulekile futhi imitha ibonisa ukumelana okungapheli. Enye ifundeka ivaliwe, lapho isekethe ifunda u-zero bese ivala. Kwezinye izimo, imitha izokhala ngemva kokuthola ukuqhubeka.(2)

Ukuhlolwa kwe-Diode kanye ne-capacitance

Umsebenzi wokuhlola i-diode usitshela ukuthi i-diode iyasebenza noma cha. I-diode iyingxenye kagesi esiza ukuguqula i-AC ibe yi-DC. Ukuhlolwa kwe-capacitance kuhlanganisa ama-capacitor, okungamathuluzi okugcina amashaji, kanye nemitha ekala ukushaja. I-multimeter ngayinye inezintambo ezimbili nezinhlobo ezine zezixhumi ongaxhuma kuzo izintambo. Izixhumi ezine zifaka isixhumi se-COM, Isixhumi, mAOm Jack, futhi mAmkA isixhumi.

Ibanga lemanuwali nele-auto

Izinhlobo ezimbili zama-multimeters zingasetshenziswa. Enye i-multimeter ye-analog kanti enye iyi-multimeter yedijithali. I-multimeter ye-analog ihlanganisa izilungiselelo eziningana zebanga futhi ine-pointer ngaphakathi. Ngeke isetshenziselwe ukukala izilinganiso ezibucayi njengoba isikhombi singeke siphambuke kububanzi obukhulu. Isikhombi sizochezukela kumkhawulo waso ebangeni elifushane futhi ukulinganisa ngeke kweqe ububanzi.

I-DMM inenani lezilungiselelo ezingakhethwa kusetshenziswa ukudayela. Imitha ikhetha ngokuzenzakalelayo ububanzi njengoba ingenazo izilungiselelo zobubanzi. Ama-multimeters azenzakalelayo enza kangcono kakhulu kune-multimeters yebanga lezandla.

Izincomo

(1) Umthetho ka-Ohm - https://electronics.koncon.nl/ohmslaw/

(2) Ulwazi lwamamitha amaningi - https://www.electrical4u.com/voltage-or-electric-potential-difference/