izindaba

I-inductor yemodi evamilekusho ukuthi amakhoyili amabili alinyazwa kumongo wensimbi ofanayo, anamawindi aphikisanayo, inani lamajika kanye nesigaba esifanayo.Okuvame ukusetshenziswa ekushintsheni okuphakelayo kwamandla ukuze kuhlungwe amasiginali wokuphazamiseka kagesi wemodi evamile, izihlungi ze-EMI zisetshenziselwa ukucindezela amagagasi kagesi akhiqizwe imigqa yesiginali enesivinini esikhulu ukusuka ekukhanyeni ngaphandle.I-inductance yemodi evamile kokokufaka kwemojuli yamandla ngokuvamile ukunciphisa imisebe kanye nomsindo wemodi evamile yefrikhwensi ephezulu.Kodwa-ke, i-inductance enkulu yemodi evamile inomphumela omuhle wokucindezela ekuphazamisekeni kwe-low-frequency, futhi imvamisa ephezulu ingase ibe yimbi kakhulu, kodwa umuzwa omncane unomphumela omubi wokucindezela ekuphazamisekeni kwe-low-frequency.

Inomphumela wokucindezela osobala kumsindo wemodi evamile.Umgomo wokusebenza ukuthi lapho imodi evamile yamanje idlula engxenyeni, ama-inductance ama-inductors amabili ayagqagqana.Kodwa ngomsindo wemodi yokuhlukanisa, ama-inductance amabili alingana nokuthatha umehluko, inani le-inductance liyehla, futhi umphumela wokucindezela uzoba buthaka.

Usayizi we-inductance yemodi evamile uzothinta ngqo ukusebenza kwe-EMC.Umsebenzi oyinhloko ukuhlukanisa isignali yemodi evamile futhi unciphise ukuphazamiseka kwemodi evamile yangaphandle, ngaleyo ndlela kuncishiswe umthelela ekunikezeni amandla.Ingase futhi yehlise isignali yemodi evamile yangaphakathi futhi inciphise umthelela kugridi yamandla.Kodwa-ke, i-inductance enkulu yemodi evamile inomphumela omuhle wokucindezela ekuphazamisekeni kwe-low-frequency, futhi imvamisa ephezulu ingase ibe yimbi kakhulu, kodwa umuzwa omncane unomphumela omubi wokucindezela ekuphazamisekeni kwe-low-frequency.

Esivame ukukusebenzisa ekugcineni kwemojula yamandla umthamo ongu-x, umthamo y kanye nemodi evamile yokungena.Umthamo une-impedance ephansi esignali, esebenza njengesignali yokudlula nokuhlanganisa.I-inductance ingukuthikamezeka okuphezulu kusiginali futhi idlala indima ekuboniseni nasekumunceni amasiginali wokuphazamiseka wemvamisa ephezulu.

Ukuphazamiseka phakathi kwezintambo ezimbili zamandla phansi kubizwa ngokuthi i- common mode interference , kanti ukuphazamiseka phakathi kwezintambo ezimbili zamandla kubizwa ngokuthi i-different mode interference.Uma i-inductance kanye ne-capacitance kuhlanganiswa kusihlungi, umphumela wokuhlunga ungcono, futhi ibhande lemvamisa lapho i-inductance kanye ne-capacitance idlala indima.Futhi okuhlukile.I-Y capacitor kanye ne-Y capacitor zidlala indima ekuhlungeni ukuphazamiseka kwemodi evamile, futhi i-X capacitor isebenza ngokuyinhloko njengesignali yesifunda esifushane, inciphisa indlela lapho isignali yemodi yokuhlukanisa igeleza, ngaleyo ndlela inciphisa ukuzulazula okubangelwa imingcele ye-parasitic isifunda futhi kubangele ukuphuma kwe-high-frequency.

Lapho i-inductance noma i-capacitance isuswa ekwakhiweni, ingxenye esele isazosebenza, kodwa umphumela uzoba mubi kakhulu.Ngokuvamile, ukukhushulwa kwemodi evamile, kuba ngcono.Lapho ukhetha i-inductor yemodi evamile, ukukhetha kusekelwe ikakhulukazi kwijika lemvamisa ye-impedance.Ngesikhathi esifanayo, ukunakwa kufanele kukhokhwe ethonyeni le-impedance yemodi yokuhlukanisa esignali.