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Imodi Ejwayelekile Yamanje: Ipheya lamasignali (noma umsindo) anobukhulu obufanayo kanye nesiqondiso kumugqa wesignali ohlukile. Kumjikelezo.Ngokuvamile, umsindo ophansi uvame ukudluliselwa ngendlela evamile yemodi yamanje, ngakho ubizwa nangokuthi umsindo wemodi evamile.

Kunezindlela eziningi zokucindezela umsindo wemodi evamile. Ngokungeziwe ekwehliseni umsindo wemodi evamile emthonjeni, indlela evame ukusetshenziswa kakhulu yokucindezela umsindo wemodi evamile ukusebenzisa ama-inductors emodi evamile ukuze kuhlungwe umsindo wemodi evamile, okungukuthi, ukuvimba umsindo wemodi evamile kulokho okuqondiwe. isifunda. . Okusho ukuthi, idivayisi yemodi evamile yokuminyanisa ixhunywe ochungechungeni emugqeni. Inhloso yalokhu ukukhulisa ukuthinta kwe-loop yemodi evamile ukuze imodi evamile yamanje ihlakazwe futhi ivinjwe (iboniswa) ukuminyanisa, ngaleyo ndlela kucindezela umsindo wemodi evamile kulayini.

 
Izimiso ze-Common Mode Chokes noma ama-Inductors

Uma ipheya lamakhoyili asendleleni efanayo alinyazwa eringini kazibuthe eyenziwe ngento ethile kazibuthe, lapho imanje elishintshanayo lidlula, ukugeleza kazibuthe kukhiqizwa kumakhoyili ngenxa yokungeniswa kukazibuthe. Kumasiginali wemodi yokuhlukanisa, ama-fluxes kazibuthe akhiqiziwe anobukhulu obufanayo futhi aphambene ohlangothini, futhi ayakhansela ngaphandle, ngakho-ke ukuvinjelwa kwemodi yokuhlukanisa okukhiqizwa indandatho kazibuthe kuncane kakhulu; kuyilapho kumasignali emodi evamile, ubukhulu kanye nesiqondiso se-fluxes yamagnetic ekhiqiziwe kuyafana, futhi kokubili kubekwe phezulu komunye nomunye. Indandatho kazibuthe ine-impedance enkulu yemodi evamile. Lesi sici senza i-inductor yemodi evamile ibe nomthelela omncane kusiginali yemodi yokuhlukanisa futhi sinokusebenza okuhle kokuhlunga komsindo wemodi evamile.
(1) Imodi yokuhlukanisa yamanje idlula ikhoyili yemodi evamile, isiqondiso semigqa yamagnetic iphambene, futhi indawo kazibuthe eyenziwe buthaka. Ingabonwa kusukela ohlangothini lwemigqa yamagnetic kumfanekiso olandelayo - umcibisholo oqinile ubonisa isiqondiso samanje, futhi umugqa onamachashazi ubonisa isiqondiso sensimu kazibuthe.

(2) Imodi evamile yamanje idlula ikhoyili yemodi evamile, isiqondiso semigqa yamagnetic field iyafana, futhi insimu yamagnetic eyenziwe iyaqiniswa. Ingabonakala kusukela ekuqondeni kwemigqa yamagnetic emfanekisweni olandelayo - umcibisholo oqinile ubonisa isiqondiso samanje, futhi umugqa wamachashazi ubonisa isiqondiso sensimu yamagnetic.

I-inductance yekhoyili yemodi evamile yaziwa nangokuthi i-self-inductance coefficient. Siyazi ukuthi i-inductance yikhono lokukhiqiza insimu kazibuthe. Ngekhoyili yemodi evamile noma i-inductance yemodi evamile, lapho imodi evamile yamanje igeleza ikhoyili, njengoba isiqondiso semigqa yamagnetic field iyafana, ukuvuza kokuvuza akubhekwa. Esimeni se-, i-flux kazibuthe ibekwe phezulu, futhi umgomo ukuguquguquka okuhlangene. Imigqa yakazibuthe ekhiqizwe ikhoyili ebomvu esithombeni esingezansi idlula kukhoyili eluhlaza okwesibhakabhaka, futhi imigqa yakazibuthe ekhiqizwe ikhoyili eluhlaza okwesibhakabhaka nayo idlula kukhoyili ebomvu futhi iyashelana.

Ngokombono we-inductance, i-inductance nayo iphindwe kabili, futhi ukuxhumana kwe-flux kumelela ukugeleza kwamagnetic okuphelele. Kuma-inductors emodi evamile, lapho i-flux kazibuthe iphindwe kabili kuneyokuqala, inani lokujika alishintshi, futhi lamanje alishintshi, kusho ukuthi Njengoba i-inductance yanda izikhathi ezingu-2, kusho ukuthi ukulingana okulinganayo kwamagnetic kabili.

Kungani amandla kazibuthe alinganayo aphindwe kabili? Kusukela kufomula ye-inductance elandelayo, njengoba inani lokujika N lingaguquki, ukujikeleza kazibuthe kanye nendawo ephambanayo yomgogodla kazibuthe kunqunywa usayizi womzimba wengqikithi kazibuthe, ngakho-ke ayishintshi, okuwukuphela kwayo. into ukuthi i-permeability kazibuthe. u uphindwe kabili, ngakho-ke ukugeleza kazibuthe okwengeziwe kungakhiqizwa

Ngakho-ke, lapho imodi evamile yamanje idlula, i-inductance yemodi evamile isebenza kumodi ye-mutual inductance. Ngaphansi kwesenzo se-mutual inductance, i-inductance efanayo yanda ngezindleko, ngakho-ke i-inductance yemodi evamile izophindwa kabili, ngakho-ke inomphumela omuhle kusignali yemodi evamile. Umphumela wokuhlunga uwukuvimbela isignali yemodi evamile nge-impedance enkulu futhi uyivimbele ukuthi ingadluli ku-inductor yemodi evamile, okungukuthi, ukuvimbela isignali ukuthi idluliselwe esigabeni esilandelayo sesifunda. Okulandelayo ukusabela kwe-inductive ZL okukhiqizwa i-inductor.

Ukuze uqonde inductance yama-inductors emodi evamile kumodi yemodi evamile, umkhondo oyinhloko ukuqonda inductance mutual, zonke izingxenye kazibuthe, kungakhathaliseki ukuthi igama liyini, inqobo nje uma ubamba ukushintsha kwenkundla kazibuthe futhi ubone imvelo inkambu kazibuthe ishintsha ngokwenzekayo, kuzoba lula ukuyiqonda, bese-ke Kufanele sihlale sibamba umugqa wamagnetic, okuyindlela enembile yokuqonda kwethu insimu kazibuthe. Cabanga ukuthi kungakhathaliseki ukuthi umqondo wegama elifanayo noma igama elihlukile noma i-mutual inductance noma isenzakalo samagnetic field, sihlala sidweba umugqa wenkundla kazibuthe ukuze sibazi - phatha kahle "induku kazibuthe" echazwe ngaphambili. Indlela yokuphefumula".