I-Pendahuluan
Ugesi kagesi, ukugeleza kweshaja kagesi ngomqhubi, kuyisisekelo cishe sabo bonke ubuchwepheshe kagesi nobe-elekthronikhi esibusebenzisayo ekuphileni kwethu kwansuku zonke. Kusukela kumadivayisi amancane afana namaselula nama-laptop kuya ezinhlelweni ezinkulu ezifana namagridi kagesi, ukuqonda ugesi kagesi nokuthi ungawulinganisa kanjani kubalulekile. Lesi sihloko sizochaza kabanzi ukuthi uyini ugesi kagesi, izinhlobo zawo, nokuthi ungawulinganisa kanjani.
Umqondo Oyisisekelo Wamandla Kagesi
Ugesi wamandla kagesi ukhiqizwa ukuhamba kwama-electron ngokusebenzisa umqhubi. Kumqhubi wensimbi, ama-electron akhululekile ukuhamba esuka kwi-athomu eyodwa aye kwenye. Uma kusetshenziswa umehluko wamandla (i-voltage) kuzo zombili izinhlangothi zomqhubi, ama-electron azogeleza esuka esifundeni samandla aphansi aye esifundeni samandla aphezulu. Ugesi wamandla kagesi ulinganiswa ngama-ampere (A), aqanjwe ngo-André-Marie Ampère. I-ampere eyodwa ichazwa njengokugeleza kwe-coulomb eyodwa yokushaja kagesi ngomzuzwana. Ugesi wamandla kagesi ungahlukaniswa ngezinhlobo ezimbili eziyinhloko: ugesi oqondile (DC) kanye nogesi oshintshanayo (AC).
Izinhlobo Zamandla Kagesi
I-Direct Current (DC)
I-Direct current ukugeleza kweshaja kagesi ehamba ngendlela eyodwa, engaguquki. Imithombo yamandla kagesi aqondile ifaka amabhethri, amaseli elanga, kanye nezinhlobo ezithile zamajeneretha e-DC. I-DC isetshenziswa ezinhlotsheni eziningi zansuku zonke, ikakhulukazi kumadivayisi kagesi afana namaselula, ama-laptop, kanye namanye amadivayisi adinga ukunikezwa kwamandla okuzinzile nokungaguquki. Izinhlelo zamandla e-DC nazo zisetshenziswa ezinhlotsheni ezikhethekile ezifana nezinhlelo zokushaja izimoto zikagesi kanye nezinhlelo zamandla okusekelayo (i-UPS).
I-Alternating Current (AC)
Ukushintshana kwamandla kagesi kuyindlela yokushaja kagesi eshintsha njalo indlela. Imvamisa yamandla kagesi ashintshanayo inqunywa yinani lemijikelezo ngomzuzwana, elinganiswa ku-hertz (Hz). Emazweni amaningi, imvamisa ejwayelekile ye-AC ingu-50 Hz noma u-60 Hz. Umthombo oyinhloko wamandla kagesi ashintshanayo amajeneretha kagesi asetshenziswa ezitshalweni zamandla. Inzuzo eyinhloko ye-AC yikhono layo lokudluliselwa amabanga amade ngokusebenza kahle okuphezulu. I-AC isetshenziswa ezinhlelweni zokusabalalisa amandla zasekhaya nezezimboni, kanye nakumadivayisi ahlukahlukene kagesi adinga amandla aphezulu.
Ukulinganisa Kwamanje Kagesi
Ukulinganisa ugesi kudinga ithuluzi elikhethekile elibizwa ngokuthi i-ammeter. Ama-ammeter aklanyelwe ukuxhunywa ngokulandelana nesici esilinganiswa ugesi waso, okuvumela wonke ugesi ukuthi ugeleze nge-ammeter. Kunezinhlobo ezahlukene zama-ammeter, kufaka phakathi ama-ammeter e-analog kanye ne-digital, kanye nezinye izinsimbi zokulinganisa ezifana nama-multimeter angalinganisa i-voltage, ugesi, kanye nokumelana.
Ukulinganisa i-DC Current
Ukuze silinganise ugesi we-DC, singasebenzisa i-analog noma i-digital ammeter. Ama-analog ammeter asebenzisa i-pointer ehamba esikalini, kuyilapho ama-digital ammeter ebonisa inani lamanje ngokwezibalo. Ukusebenzisa i-digital ammeter kwenza inqubo yokulinganisa ibe lula futhi inembe kakhulu ngoba inesibonisi sedijithali esibonisa ngqo inani lamanje elilinganisiwe.
Ukulinganisa i-AC Current
Ukulinganisa ugesi we-AC kuyinkimbinkimbi kakhulu ngoba ugesi ushintsha indlela ngezikhathi ezithile. Ama-ammeter e-AC ngokuvamile asebenzisa i-transformer yamanje noma inzwa ye-Hall Effect ukuguqula ugesi we-AC ube isignali elinganiswayo. Ama-multimeter edijithali anamuhla avame ukuba nekhono lokulinganisa ugesi we-AC nowe-DC. Ngaphezu kwalokho, ukulinganisa ugesi we-AC kumele kucabangele izici ezifana ne-waveform kanye nemvamisa ukuze kutholakale imiphumela enembile.
Isimiso Sokusebenza se-Ammeter
Ama-ammeter asebenza ngokusekelwe esimisweni sika-Ohm kanye nomthetho wokungeniswa kwe-electromagnetic. Ku-ammeter ye-analog, ugesi ugeleza nge-coil ebekwe ngaphakathi kwensimu yamagnetic. Ukusebenzisana phakathi kogesi kanye nensimu yamagnetic kukhiqiza amandla ashukumisa inaliti esikalini. Okwamanje, i-ammeter yedijithali isebenzisa inzwa ye-elekthronikhi ethola ukugeleza kogesi bese ikuguqula kube isignali yedijithali, eboniswa esikrinini.
Ukusetshenziswa kwama-Ammeter kuma-Circuits
Ukuze ulinganise ugesi nge-ammeter, ithuluzi kumele lixhunywe ngokulandelana ne-element okukalwa kuyo ugesi. Lokhu kuqinisekisa ukuthi wonke ugesi ogeleza nge-element nawo udlula nge-ammeter. Nazi izinyathelo eziyisisekelo zokusebenzisa i-ammeter:
- Cima amandla wesekethe ngaphambi kokufaka i-ammeterLokhu kubalulekile ukuvimbela ama-short circuits noma umonakalo emishinini nasezindaweni.
- Xhuma i-ammeter ochungechungeni: Qiniseka ukuthi i-ammeter ixhunywe ngokulandelana nengxenye okuzolinganiswa ngayo ugesi wayo.
- Vula amandla wesekethe futhi: Uma i-ammeter isifakiwe kahle, vula ugesi ukuze uqale ukulinganisa.
- Funda imiphumela yokulinganisa: Imiphumela yokulinganisa izoboniswa esikrinini sedijithali noma ngesikhombisi esiku-analog ammeter.
Amaphutha Nokungaqiniseki Ekulinganisweni Kwamanje
Yonke indlela yokulinganisa inamandla okwenza iphutha elingathinta ukunemba kwemiphumela. Amaphutha ekulinganisweni kwamanje angenzeka ngenxa yezici ezahlukahlukene, okuhlanganisa:
- Izinto zezinsimbi: Amaphutha okulinganisa, ukulungiswa okuphansi, kanye nokungakwazi kwethuluzi ukukala imisinga ephansi kakhulu noma ephezulu kakhulu kungathinta imiphumela.
- Izici zemvelo: Izinga lokushisa, ukuphazamiseka kwe-electromagnetic, kanye nezinye izimo zemvelo kungathinta izilinganiso.
- Iphutha lomuntu: Ukungasiqondi kahle isikali, ukuxhumana okungafanele, kanye nokuchazwa kabi kwemiphumela kuyimithombo evamile yamaphutha abantu.
Ukuze kuncishiswe amaphutha, kubalulekile ukusebenzisa amathuluzi okulinganisa alinganiswe kahle, ukulandela izinqubo zokulinganisa ezifanele, nokwenza izilinganiso endaweni efanele.
Ubuchwepheshe Besimanje Ekulinganisweni Kwamanje
Ubuchwepheshe besimanje buqalise amathuluzi nezindlela ezintsha ezahlukahlukene zokulinganisa kwamanje okunembe kakhulu futhi okuphumelelayo. Ezinye zezinto ezintsha zakamuva zifaka:
- I-Clamp Meter: Leli thuluzi livumela ukulinganiswa kwamanje ngaphandle kokuphula isekethe. Amamitha e-clamp asebenza ngokuthola insimu yamagnetic ekhiqizwa yi-current egeleza ku-conductor.
- Inzwa Yomphumela We-Hall: Le sensor isebenzisa umphumela weHall ukuthola ugesi ngaphandle kokuthintana ngqo. Le sensor iwusizo kakhulu ekulinganiseni ugesi ezinhlelweni okunzima ukuzifinyelela noma eziyingozi.
- I-Ammeter engenantambo: Ubuchwepheshe obungenantambo buvumela ukulinganiswa kwamanje okude, okwandisa ukuphepha kanye nokulula.
Isiphetho
Ugesi wamanje uyinto ebalulekile ku-physics kanye nobunjiniyela kagesi. Ukuqonda ukuthi ugesi wamanje usebenza kanjani nokuthi ungawulinganisa kanjani ngendlela efanele kubalulekile ekuthuthukiseni nasekulondolozeni izinhlelo zikagesi nezikagesi ezisebenzayo neziphephile. Ukulinganisa ugesi wamanje, kungaba yi-DC noma i-AC, kudinga ukuqonda okuphelele kwezimiso zikagesi eziyisisekelo kanye nokusetshenziswa kwezinsimbi zokulinganisa ezifana nama-ammeter. Ngale ndlela yokuqonda, singaqinisekisa ukusebenza kahle nokuphephile kwezinhlelo zethu zikagesi futhi sigweme izingozi ezihlobene nokulinganisa okungalungile.
