Ungakala kanjani okwamanje nge-multimeter (isifundo esiyingxenye ezi-2)

Lapho usebenza kuphrojekthi kagesi, kungase kudingeke uhlole inani lamanje noma lamandla agelezayo kumjikelezo. Udinga futhi ukukala i-amperage ukuze unqume ukuthi kukhona yini okudonsa amandla amaningi kunalokho okufanele.

Ukulinganisa amandla kungaba usizo uma uzama ukuthola ukuthi ingxenye yemoto yakho idonsa ibhethri lakho yini.

Ngenhlanhla, ukulinganisa okwamanje akunzima uma wazi izivivinyo ze-multimeter eziyisisekelo futhi uqaphele ezintweni zikagesi.

Ake ngikusize ufunde ukukala ama-amps nge-multimeter. 

Okumele kuqashelwe

Kufanele uqaphele ukuthi usebenzisa i-multimeter elula noma i-multimeter yedijithali. Lapho wenza izilinganiso zikagesi, uhlelo ngalunye lwamanje lokulinganisa luveza izingozi ezingaba khona zokuphepha okufanele zicatshangelwe. Ngaphambi kokusebenzisa noma iyiphi impahla yokuhlola kagesi, abantu kufanele bafunde incwadi yomsebenzisi njalo. Kubalulekile ukufunda ngezinqubo zokusebenza ezifanele, izinyathelo zokuphepha kanye nemikhawulo. (1)

Gqoka amagilavu ​​enjoloba asindayo, gwema ukusebenza eduze kwamanzi noma izindawo zensimbi, futhi ungathinti izintambo ezingenalutho ngezandla. Kuhle futhi ukuba nomuntu eduze. Umuntu ongakusiza noma afonele usizo uma ubanjwa wugesi.

Ukulungiselelwa kwe-Multimeter

No. 1. Thola ukuthi mangaki ama-amp-volts ibhethri lakho noma i-circuit breaker engaphatha ku-nameplate.

Qiniseka ukuthi i-multimeter yakho ifana nenani lama-amps ageleza kusekethe ngaphambi kokuyixhuma kuyo. Ibonisa isilinganiso esiphezulu samanje samandla amaningi, njengoba kuboniswe ku-nameplate. Ungathola inani lamanje lezintambo ze-multimeter ngemuva kwethuluzi noma kumanuwali yeziqondiso. Ungabona futhi ukuthi isikali sikhuphuka kangakanani. Ungazami ukulinganisa ama-currents ngaphezu kwevelu yesikali esiphezulu. 

#2 Sebenzisa izinsimbi zokuxhuma uma umkhondo wakho we-multimeter ungekho phezulu ngokwanele kumjikelezo. 

Faka izintambo ku-multimeter bese uxhuma kusekethe. Yenza lokhu ngendlela efanayo nakuma-clamp multimeter. Gcoba ibhande ngocingo oluphilayo noma olushisayo. Ngokuvamile kuba mnyama, obomvu, oluhlaza okwesibhakabhaka, noma umbala ngaphandle komhlophe noma oluhlaza. Ngokungafani nokusebenzisa i-multimeter, ama-clamps ngeke abe yingxenye yesekethe.

No. 3. Faka isivivinyo esimnyama esiholela embobeni ye-COM ye-multimeter.

Ngisho noma usebenzisa i-jig, i-multimeter yakho kufanele ibe nemikhondo ebomvu nemnyama. I-probe izophinde ibe nethiphu ngakolunye uhlangothi ukuze ixhume entweni. Umthofu omnyama wokuhlola, okuwucingo olunegethivu, kufanele uhlale uxhunywe kujeke we-COM. "COM" imele "okujwayelekile", futhi uma ichweba lingamakiwe ngalo, ungase uthole uphawu olunegethivu esikhundleni salokho.

Uma izintambo zakho ziqukethe izikhonkwane, uzodinga ukuzigcina zisendaweni lapho ukala zamanje. Ungakhulula izandla zakho ngokuzinamathisela kuketango uma zineziqeshana. Nokho, zombili izinhlobo zama-probe zixhunywe kumitha ngendlela efanayo.

Inombolo 4. Faka i-probe ebomvu esokhethini "A".

Ungabona izitolo ezimbili ezinohlamvu "A", eyodwa ebhalwe ukuthi "A" noma "10A" nenye ebhalwe "mA". I-mA outlet ihlola ama-milliamps ehle aze afike ku-10 mA. Uma ungenaso isiqiniseko sokuthi usebenzise yiphi, khetha inketho ephezulu ethi "A" noma "10A" ukuze ugweme ukulayisha kakhulu imitha.

Cha. 5. Kumitha, ungakhetha i-AC noma i-DC voltage.

Uma imitha yakho ingeyokuhlola amasekhethi e-AC noma e-DC kuphela, uzodinga ukukhetha ukuthi iyiphi ozama ukuyihlola. Uma ungakaqiniseki, hlola ilebula ekunikezeni amandla futhi. Lokhu kufanele kukhulunywe eduze kwe-voltage. I-Direct current (DC) isetshenziswa ezimotweni nakumagajethi asebenza ngebhethri, kuyilapho i-alternating current (AC) isetshenziswa kakhulu ezintweni zasendlini nasezinjini zikagesi.

No. 6. Phakathi nesilinganiso, setha isikali siye ezingeni eliphezulu le-ampere-volt.

Uma usubale imisinga ephakeme kakhulu ozoyihlola, thola i-lever kumitha yakho. Zungezisa ibe phezulu kancane kunale nombolo. Uma ufuna ukuqaphela, vula ukudayela kube phezulu. Kodwa uma i-voltage elinganisiwe iphansi kakhulu, ngeke ukwazi ukufunda. Uma lokhu kwenzeka, uzodinga ukunciphisa isikali futhi uthathe kabusha isabelo.

Indlela yokulinganisa i-volt-ampere nge-multimeter

No. 1. Vala amandla esekethe.

Uma isifunda sakho sisebenza ngebhethri, nqamula ikhebula elinegethivu ebhethrini. Uma udinga ukucisha ugesi ngeswishi, vala iswishi, bese unqamula umugqa ophambene. Ungayixhumi imitha kwisekhethi uma ugesi uvuliwe.

Cha. 2. Nqamula intambo ebomvu esibonelweni sikagesi.

Ukuze ulinganise umthamo wamanje ogeleza ngesekhethi, xhuma i-multimeter ukuze uqedele isifundo. Ukuze uqalise, vala amandla kusekethi, bese unqamula intambo ephozithivu (ebomvu) emthonjeni wamandla. (2)

Ungase udinge ukusika ucingo ngezinto zokusika izintambo ukuze unqamule iketango. Bona ukuthi likhona yini ipulaki lapho kuhlangana khona intambo yamandla nentambo eya kugajethi ngaphansi kokuhlolwa. Vele ususe ikhava bese uqaqa izintambo eduze komunye nomunye.  

No. 3. Hlikihla iziphetho zezintambo uma kunesidingo.

Goqa intambo encane kumaphini we-multimeter, noma ushiye izintambo ezanele ziveziwe ukuze izikhonkwane zengwenya zikhiyeke ngokuphephile. Uma ucingo luvalekile ngokuphelele, thatha abasiki bezintambo cishe intshi engu-1 (2.5 cm) ukusuka ekugcineni. Cindezela ngokwanele ukuze usike i-insulation yerabha. Bese udonsa ngokushesha abasiki bezintambo uye kuwena ukuze ususe okokubamba.

No. 4. Gcoba umkhondo wokuhlola ophozithivu we-multimeter ngocingo oluphozithivu.

Goqa isiphetho esingenalutho sentambo ebomvu nge-duct tape kude nomthombo wamandla. Namathisela iziqeshana zengwenya ocingweni noma usonge ichopho le-multimeter probe kuyo. Kunoma yikuphi, ukuze uthole umphumela onembile, qiniseka ukuthi ucingo luvikelekile.

Cha. 5. Nika amandla isekethe ngokuxhuma i-probe emnyama ye-multimeter ocingweni lokugcina.

Thola intambo ephozithivu evela esisetshenziswa sikagesi esivivinywayo bese uyixhuma kwithiphu elimnyama le-multimeter. Uma unqamula izintambo kwisekhethi esebenza ngebhethri, izophinda ithole amandla ayo. Vula ugesi uma uwucime ngefuse noma ngeswishi.

No. 6. Ngenkathi ufunda imitha, shiya izisetshenziswa zisendaweni cishe umzuzu.

Uma imitha isifakiwe, kufanele ubone ngokushesha inani esibukweni. Lesi isilinganiso samanje noma samanje sesekethe yakho. Ukuze uthole isilinganiso esinembile kakhulu, gcina amadivayisi azungezisayo okungenani iminithi elingu-1 ukuze uqinisekise ukuthi okwamanje kuzinzile.

Ungabheka ezinye izivivinyo ze-multimeter esizibhalile ngezansi;

• Ungayisebenzisa kanjani i-multimeter ukuhlola i-voltage yezintambo ezibukhoma
• Indlela yokusetha i-amplifier nge-multimeter
• Indlela yokulandelela ucingo nge-multimeter

Izincomo

(1) Izinyathelo Zokuphepha - https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/prevention.html

(2) umthombo wamandla - https://www.sciencedirect.com/topics/engineering/power-source