I-Multimeter vs Ohmmeter: Yikuphi Okukulungele?

Amayunithi kagesi adlala indima ebalulekile ekuphileni kwethu kwansuku zonke futhi abaningi bethu abakuqapheli lokho. Kodwa-ke, uma ungumuntu ochitha isikhathi sakho esebenza ngama-elekthronikhi, ukwazi-ke amayunithi ahilelekile nokuthi asetshenziswa kanjani kubalulekile. Enye yamayunithi avame ukukalwa kumishini kagesi ukumelana, futhi lokhu kusetshenziswa i-ohmmeter. Nokho, kungenzeka futhi ukuthi usebenza kuphrojekthi eyinkimbinkimbi edinga okungaphezu nje kokulinganisa ukumelana.

Amanye amayunithi okulinganisa ajwayele ukukalwa afaka i-voltage, i-AC/DC, izinga lokushisa, nokuqhubeka. Esimeni esinjalo, imitha enamakhono amaningi okubona noma "i-multimeter" izodingeka. Ngeshwa, abantu abaningi abawuqondi umehluko phakathi kwabo, nakuba besebenza nabo. Lo mhlahlandlela uzokusiza ukucacisa izinto, ngakho qhubeka ufunda.

Izinhlobo zama-multimeters

I-multimeter iyithuluzi elinikeza izinketho eziningi ezahlukene njengezijwayelekile. Lokhu kwenza kube lula kubasebenzisi ukukhetha uma bethenga njengoba bedinga kuphela ukukhetha imitha ehambisana nezidingo zabo. Amamitha amaningi eza namayunithi ambalwa ayisisekelo, kodwa kukhona ezinye izinketho ezithuthukile ezinikeza nezilinganiso ezingavamile kakhulu. Ngokuyisisekelo, kunezinhlobo ezimbili kuphela zama-multimeters: ama-multimeters e-analog nama-multimeters edijithali. (1)

I-multimeter ye-analog, ethathwa njengeshibhe kokubili, inechashaza lomcibisholo (imitha ye-analog) ngaphezu kwesikali sokulinganisa esiphrintiwe. Lokhu ngokuvamile akusasetshenziswa njengoba ukusetshenziswa kwabo kungaba yinkinga futhi kungase kungalungile kancane. Icala lokusebenzisa kuphela lapho zikhanyisa lapho ufuna ukukala izinguquko ezincane ezilinganisweni, njengoba ukunyakaza komcibisholo kungathatha ngisho nezinguquko ezincane kakhulu. Ama-multimeters e-analog nawo ashibhile futhi asekelwe ku-microammeter. Nasi isifundo sabaqalayo sendlela yokufunda i-analog multimeter.

Le divayisi, ebizwa ngokuthi i-digital multimeter noma i-digital multimeter, iphathwa yibo bonke ochwepheshe bakagesi nochwepheshe. Njengoba kuyizibali zedijithali, lokhu kusho ukuthi ungazithola ngesibonisi se-LCD esikhundleni somcibisholo. Zinikeza izilinganiso ezinembile futhi ziza ngezinketho zokulinganisa eziningana ezahlukene. (2)

I-Cen-Tech ne-Astroai yimikhiqizo emibili ehamba phambili ye-digital multimeter emakethe namuhla. Ungahlola isibuyekezo sayo esigcwele ukuze ubone ukuthi iyiphi engcono kakhulu kuwe.

Izinhlobo ze-ohmmeter

Kunezinhlobo ezintathu eziyinhloko zama-ohmeters: ama-ohmmeter ochungechunge, ama-ohmmeter amaningi nama-shunt ohmmeters. Wonke asetshenziselwa ukukala ukumelana, futhi nansi indlela ngayinye esebenza ngayo.

Kule ohmmeter, ingxenye ofuna ukukala ukumelana kwayo kufanele ixhunywe ochungechungeni ngemitha. Idivayisi isebenza ngokudlula okwamanje kumjikelezo, futhi ukumelana okungezwe ingxenye kunciphisa ukulinganisa ukusuka ku-zero kuya ku-zero. I-Infinity imele ukugeleza kwamahhala, futhi inani eliseduze lifika ku-zero, kuba nokumelana okwengeziwe kumjikelezo.

Lolu hlobo lwe-ohmmeter ludinga ingxenye ukuthi ixhunywe kubhethri ngokuhambisana, futhi ukumelana kuboniswa ngomcibisholo obheke kwesokunxele. Imitha ilula futhi ayinikezi izilinganiso zamaphuzu zamanje noma ezingapheli.

Lena i-ohmmeter yebanga elide ephinde ibe nesilawuli ukukusiza ukuthi uguqule ububanzi ukuze buhambisane nezidingo zakho. Kulesi simo, ingxenye yokulinganisa ixhunywe ngokuhambisana nemitha, futhi i-pointer ingabonisa inani lokumelana elisetshenzisiwe.

Umehluko phakathi kwe- i-multimeter kanye ne-ohmmeter

Ithebula elilandelayo libonisa umehluko obalulekile phakathi kwe-ohmmeter ne-multimeter.

i-multimeter	ohmmeter
I-multimeter ingenza umsebenzi ofanayo ne-ohmmeter futhi ilinganise amanye amayunithi afana nemvamisa, izinga lokushisa, i-voltage, amandla, njll.	Okuwukuphela kweyunithi elinganiswa nge-ohmmeter ukumelana nokuqhubeka.
Ama-multimeter avame ukubiza kakhulu, futhi kuye ngokusebenza kwawo, angabiza kakhulu.	Ama-ohmmeter ashibhe kakhulu ngenxa yokusebenza kwawo okulinganiselwe.
Ama-multimeter anembe kakhulu ngenxa yokujikeleza kwawo kanye neqiniso lokuthi angenza izilinganiso zedijithali.	Ukunemba kwe-ohmmeter akukuhle, ikakhulukazi ngenxa yokwakheka kwe-analog.

I-Multimeter vs ohmmeter: ubani ozowina?

Kuyacaca ukuthi ngokombono wokusebenza, i-multimeter inamakhono amaningi kune-ohmmeter. Kodwa-ke, uma ukumelana nokuqhubeka kuyikhona okukhathalelayo futhi ukulinganisa nokunemba akuyona inkinga, i-ohmmeter ingaba inketho engcono kakhulu kuwe. Kodwa-ke, ukuze uthole isipiliyoni esiphezulu sokusebenza, kufanele ukhethe i-multimeter enamamitha edijithali.

Izincomo

(1) amayunithi ayisisekelo okulinganisa - https://www.britannica.com/video/

214818/Iyini i-SI-overview-international-system-of-units

(2) Isibonisi se-LCD — https://electronics.howstuffworks.com/lcd.htm