Ithebula lezimpawu zamamitha amaningi: incazelo
Okuqukethwe
Iyini i-multimeter?
I-multimeter iyithuluzi lokulinganisa eliyisisekelo elingalinganisa izici ezihlukahlukene zikagesi ezifana ne-voltage, ukumelana, namandla. Idivayisi yaziwa nangokuthi i-volt-ohm-millimeter (VOM) ngoba isebenza njenge-voltmeter, i-ammeter, ne-ohmmeter.
Izinhlobo zama-multimeters
Lawa madivaysi okulinganisa ayahlukahluka ngobukhulu, izici namanani futhi aklanyelwe ukuthwalwa noma asetshenziswe etafuleni kuye ngokusetshenziswa kwawo okuhlosiwe. Izinhlobo zama-multimeters zihlanganisa:
- I-Analog multimeter (funda ukuthi ungafunda kanjani lapha)
- I-multimeter yedijithali
- I-multimeter ye-fluke
- I-Clamp multimeter
- I-multimeter ezenzakalelayo
I-multimeter ingenye yezinsimbi zokulinganisa ezisetshenziswa kakhulu namuhla. Kodwa-ke, abaqalayo bavame ukukuthola kunzima ukukhomba izimpawu ku-multimeter. Kulesi sihloko, sizokukhombisa ukuthi ungabona kanjani izinhlamvu ku-multimeter.
Nakuba izinhlobo ezahlukene zama-multimeters zitholakala emakethe, zonke zisebenzisa uhlelo olufanayo lwezimpawu. Izimpawu zingahlukaniswa zibe izingxenye ezilandelayo:
- Isithonjana sokuvula/ukuvala
- isithonjana sesango
- Uphawu lwe-voltage
- Uphawu lwamanje
- Uphawu lokumelana
Incazelo yezimpawu ku-multimeter
Izimpawu ku-multimeter zifaka:
| Символ | Ukusebenza kwesistimu |
| BAMBA inkinobho | Kuyasiza ukurekhoda nokugcina idatha elinganisiwe. |
| Inkinobho yokuvula/yokuvala | Vula, vala. |
| Imbobo ye-COM | Imele i-Common futhi ihlale ixhunywe phansi (Ground) noma i-cathode yesekethe. Imbobo ye-COM ivamise ukuba mnyama ngombala futhi ivame ukuxhunywa kuphenyi elimnyama. |
| ichweba 10A | Leli ichweba elikhethekile, ngokuvamile eliklanyelwe ukukala imisinga ephezulu (> 200 mA). |
| mA, μA | Imbobo yokulinganisa yamanje ephansi. |
| mA ohm port | Lesi imbobo lapho uphenyo olubomvu ngokuvamile luxhunywa khona. Leli chweba lingakala lamanje (kufika ku-200mA), i-voltage (V), nokumelana (Ω). |
| imbobo i-oCVΩHz | Lena imbobo exhunywe kumphumela wokuhlola obomvu. Ikuvumela ukuthi ulinganise izinga lokushisa (C), i-voltage (V), ukumelana (), imvamisa (Hz). |
| Imbobo ye-RMS yangempela | Ivamise ukuxhunywa entanjeni ebomvu. Ukuze ulinganise impande yeqiniso isho isikwele (i-RMS yeqiniso) ipharamitha. |
| KHETHA inkinobho | Kuyasiza ukushintsha phakathi kwemisebenzi. |
| ukukhanya | Lungisa ukukhanya kwesibonisi. |
| Amandla kagesi | Ishintshana yamanje. Eminye imikhiqizo ibizwa nje ngokuthi A. |
| I-voltage ye-DC | D.C. |
| Hz | Kala imvamisa. |
| DUTY | Umjikelezo wokulinganisa. Linganisa amandla amanje. Hlola ukuqhubeka, isifunda esifushane (Isheke lokuqhubeka). |
| inkinobho yesiginali | Ukuhlolwa kwe-Diode (Ukuhlolwa kwe-Diode) |
| I-hFE | Ukuhlolwa kwe-Transistor-transistor |
| I-NCV | Umsebenzi wokungeniswa wamanje ongaxhumene naye |
| Inkinobho ye-REL (isihlobo) | Setha inani lesithenjwa. Isiza ukuqhathanisa nokuqinisekisa amanani alinganisiwe ahlukene. |
| RANGE inkinobho | Khetha indawo yokulinganisa efanele. |
| MAX / MIN | Gcina amanani aphezulu kanye nobuncane bokufaka; Isaziso se-bhip uma inani elilinganisiwe lidlula inani eligciniwe. Bese-ke leli nani elisha libhalwa ngaphezulu. |
| Uphawu Hz | Ikhombisa imvamisa yesekhethi noma idivayisi. |
Usebenzisa i-multimeter?
- Isetshenziselwa ukukala i-voltage, isibonelo: ukukala i-DC yamanje, i-AC yamanje.
- Linganisa ukumelana ne-voltage engaguquki, yamanje kanye ne-ohmmeter encane.
- Isetshenziselwa ukukala ngokushesha isikhathi nemvamisa. (1)
- Iyakwazi ukuhlonza izinkinga zikagesi ezimotweni, ukuhlola amabhethri, ama-alternator emoto, njll. (2)
Lesi sihloko sihlinzeka ngazo zonke izincazelo zezimpawu zokubhekisela ukuze zibone zonke izimpawu eziboniswa ku-multimeter. Uma siphuthelwe eyodwa noma sinesiphakamiso, zizwe ukhululekile ukusithumelela i-imeyili.
Izincomo
(1) ukulinganisa imvamisa - https://www.researchgate.net/publication/
269464380_Frequency_Measurement
(2) ukuxilonga izinkinga - https://www.sciencedirect.com/science/article/
pii/0305048393900067
