Multimeter vs Ohmmeter: Ndi Iti Yoyenera Kwa Inu?

Magetsi amatenga gawo lalikulu pamoyo wathu watsiku ndi tsiku ndipo ambirife sitikuzindikira. Komabe, ngati ndinu munthu amene mumathera nthawi yanu mukugwira ntchito ndi zamagetsi, ndiye kuti kudziwa magawo omwe akukhudzidwa ndi momwe mungagwiritsire ntchito ndikofunikira. Imodzi mwa mayunitsi omwe nthawi zambiri amayezedwa pazida zamagetsi ndi kukana, ndipo izi ndi zomwe ohmmeter imagwiritsidwa ntchito. Komabe, mungakhale mukugwiranso ntchito yovuta yomwe imafuna zambiri osati kungoyesa kukana.

Magawo ena oyezera omwe amayezedwa mofala monga magetsi, AC/DC, kutentha, ndi kupitiriza. Zikatero, mita yokhala ndi mphamvu zambiri zodziwira kapena "multimeter" ingafunike. Tsoka ilo, anthu ambiri samamvetsetsa kusiyana pakati pawo, ngakhale amagwira nawo ntchito. Bukuli likuthandizani kuti mumveke bwino, choncho pitirizani kuwerenga.

Mitundu ya multimeters

Multimeter ndi chipangizo chomwe chimapereka zosankha zingapo monga muyezo. Izi zimapangitsa kuti zikhale zosavuta kwa ogwiritsa ntchito kusankha pogula chifukwa amangofunika kusankha mita yomwe ikugwirizana ndi zosowa zawo. Mamita ambiri amabwera ndi mayunitsi ochepa, koma pali zosankha zapamwamba zomwe zimaperekanso miyeso yocheperako. Kwenikweni, pali mitundu iwiri yokha ya ma multimeter: ma multimeter a analogi ndi ma multimeter a digito. (1)

Multimeter ya analogi, yomwe imatengedwa kuti ndi yotsika mtengo pa ziwirizi, ili ndi kadontho (mita ya analogi) pamwamba pa sikelo yosindikizidwa. Izi nthawi zambiri sizigwiritsidwanso ntchito chifukwa kugwiritsa ntchito kwawo kumatha kukhala kovuta ndipo kumatha kukhala kolakwika pang'ono. Njira yokhayo yogwiritsira ntchito pamene amawunikira ndi pamene mukufuna kuyeza kusintha kwakung'ono kwa miyeso, monga kuyenda kwa muvi kumatha kutenga ngakhale kusintha kochepa kwambiri. Ma multimeter a analogi nawonso ndi otsika mtengo ndipo amachokera pa microammeter. Nawa phunziro la oyamba kumene momwe mungawerenge multimeter ya analogi.

Chipangizochi, chotchedwa digito multimeter kapena digito multimeter, chimanyamulidwa ndi akatswiri onse amagetsi ndi amisiri. Popeza ndi zowerengera za digito, izi zikutanthauza kuti mutha kuzipeza ndi chiwonetsero cha LCD m'malo mwa muvi. Amapereka miyeso yolondola ndipo amabwera m'njira zingapo zosiyanasiyana. (2)

Cen-Tech ndi Astroai ndi awiri mwazinthu zotsogola za digito zama multimeter pamsika lero. Mutha kuyang'ana ndemanga yake yonse kuti muwone yomwe ili yabwino kwa inu.

Mitundu ya Ohmmeter

Pali mitundu itatu ikuluikulu ya ma ohmmeters: ma ohmmeters angapo, ma ohmmeters osiyanasiyana, ndi ma shunt ohmmeters. Zonsezi zimagwiritsidwa ntchito poyesa kukana, ndipo apa ndi momwe aliyense amagwirira ntchito.

Kwa ohmmeter iyi, gawo lomwe kukana komwe mukufuna kuyeza liyenera kulumikizidwa motsatizana ndi mita. Chipangizocho chimagwira ntchito podutsa panopa kudutsa dera, ndipo kukana komwe kumawonjezeredwa ndi gawoli kumachepetsa muyeso kuchokera ku zero mpaka zero. Infinity imayimira kuyenda kwaufulu, ndipo kuyandikira kwa mtengowo ndi zero, kutsutsa kumakhalapo mu dera.

Mtundu uwu wa ohmmeter umafuna kuti chigawocho chigwirizane ndi batri mofanana, ndipo kukana kumawonetsedwa ndi muvi wolozera kumanzere. Meta ndiyosavuta ndipo siyipereka miyeso yapano kapena yopanda malire.

Iyi ndi ohmmeter yayitali yomwe ilinso ndi chowongolera kuti ikuthandizireni kusintha mawonekedwe kuti agwirizane ndi zosowa zanu. Pankhaniyi, gawo loyezera limalumikizidwa mofanana ndi mita, ndipo pointer ikhoza kuwonetsa mtengo wotsutsa womwe umagwiritsidwa ntchito.

Kusiyana pakati multimeter ndi ohmmeter

Gome lotsatirali likuwonetsa kusiyana kwakukulu pakati pa ohmmeter ndi multimeter.

multimeter	ohmmeter
Multimeter imatha kugwira ntchito yofanana ndi ohmmeter ndikuyesa mayunitsi ena monga pafupipafupi, kutentha, voteji, capacitance, ndi zina zambiri.	Chigawo chokhacho choyezedwa ndi ohmmeter ndi kukana ndi kupitiriza.
Ma Multimeters amakhala okwera mtengo kwambiri, ndipo kutengera magwiridwe antchito, amatha kukhala okwera mtengo kwambiri.	Ohmeters ndi otsika mtengo kwambiri chifukwa cha ntchito zawo zochepa.
Ma Multimeter ndi olondola kwambiri chifukwa cha mayendedwe awo komanso kuti amatha kupanga miyeso ya digito.	Kulondola kwa Ohmmeter sikuli bwino, makamaka chifukwa cha kapangidwe ka analogi.

Multimeter vs ohmmeter: ndani adzapambana?

Zikuwonekeratu kuti poyang'ana ntchito, multimeter ili ndi mphamvu zambiri kuposa ohmmeter. Komabe, ngati kukana ndi kupitiliza ndizo zonse zomwe mumasamala ndipo kuyeza ndi kulondola sikuli vuto, ndiye kuti ohmmeter ikhoza kukhala njira yabwino kwambiri kwa inu. Komabe, kuti mugwiritse ntchito kwambiri, muyenera kusankha ma multimeter okhala ndi mita ya digito.

ayamikira

(1) magawo oyambira oyezera - https://www.britannica.com/video/

214818/Kodi SI-overview-international-system-of-units ndi chiyani?

(2) Chiwonetsero cha LCD - https://electronics.howstuffworks.com/lcd.htm