(1) isihlungi sephasi eliphansi
Ukusuka ku-0 kuye ku-F2, izici ze-amplitude-frequency ziyisicaba, ezingenza izingxenye zemvamisa ezingaphansi kwe-F2 zidlule cishe zinganakwa, kuyilapho lezo eziphakeme kune-F2 zincishiswa kakhulu.
(2) isihlungi se-high-pass
Ngokuphambene nokuhlunga kwephasi eliphansi, izici zayo ze-amplitude-frequency ziyisicaba ukusuka ku-F1 kuya ku-infinity.Ivumela izingxenye zemvamisa yesiginali engenhla kwe-F1 ukuthi idlule cishe ngokunganaki, kuyilapho lezo ezingaphansi kwe-F1 zizoncishiswa kakhulu.
(3) isihlungi se-band pass
I-passband yayo iphakathi kwe-F1 ne-F2.Ivumela izingxenye zefrikhwensi yesiginali ephezulu kune-F1 futhi ephansi kune-F2 ukuthi idlule ngokunganakiwe, kuyilapho ezinye izingxenye zincishisiwe.
(4) isihlungi sokumisa ibhande
Ngokuphambene nokuhlunga i-bandpass, ibhande lokumisa liphakathi kwamafrikhwensi u-F1 no-F2.Inciphisa imvamisa yezingxenye zesignali ephakeme kune-F1 futhi iphansi kune-F2, futhi ezinye izingxenye zemvamisa zidlula cishe zingagxiliwe.
Isihlungi samandla we-Electromagnetic interference (EMI) siyidivayisi engenzi lutho esakhiwe i-inductance namandla.Empeleni isebenza njengezihlungi ezimbili ze-low-pass, enye inciphisa ukuphazamiseka kwemodi evamile futhi enye inciphisa ukuphazamiseka kwemodi ehlukile.Inciphisa amandla e-rf kubhendi yokumisa (imvamisa ibe mkhulu kuno-10KHz) futhi ivumela imvamisa yamandla ukuthi idlule ngokuncishiswa okuncane noma cha.Izihlungi zamandla ze-EMI ziyinketho yokuqala yonjiniyela bomklamo we-elekthronikhi ukuze balawule i-EMI eqhutshwayo kanye ne-radiated.
(A) Ngokusebenzisa izici ze-capacitor edlula imvamisa ephezulu kanye ne-low frequency isolation, i-high frequency interference current ye-live wire kanye ne-neutral wire yethulwa ocingweni lwaphansi (imodi evamile), noma kwethulwa i-high frequency interference current yocingo oluphilayo. kuntambo engathathi hlangothi (imodi ehlukile);
(B) Bonisa ukuphazamiseka kwamanje kwe-high-frequency back to the source of interference ngokusebenzisa izici ze-impedance zekhoyili ye-inductor;
Ukuze kuncishiswe ukumelana nokubekwa phansi, isihlungi kufanele sifakwe endaweni yensimbi eqhubayo noma sixhunywe endaweni ephansi eseduze ngendawo yomhlabathi ephothiweyo ukuze kugwenywe ukuthinta okukhulu okubangelwa izintambo eziphansi ezizacile.
Izinkomba ezimbalwa kufanele zicatshangelwe lapho kukhethwa isihlungi solayini wamandla.Eyokuqala ilinganiselwe i-voltage/isilinganiso samanje, kulandelwa ukulahlekelwa kokufaka, ukuvuza kwamanje (isihlungi samandla e-dc asicabangi usayizi wokuvuza kwamanje), usayizi wesakhiwo, futhi ekugcineni ukuhlolwa kwe-voltage.Njengoba ingaphakathi lesihlungi ngokuvamile liyimbiza, izici zemvelo aziyona into ekhathazayo kakhulu.Kodwa-ke, izici zokushisa ze-potting material kanye ne-filter capacitor zinethonya elithile ezicini zemvelo zesihlungi sokunikezwa kwamandla.
Umthamo wesihlungi unqunywa ngokuyinhloko i-inductance kumjikelezo wesihlungi.Uma ivolumu yekhoyili ye-inductance iba nkulu, ivolumu yesihlungi iba nkulu.
