Imvamisa yemodi ejwayelekile , eyaziwa nangokuthi imodi ejwayelekile, isetshenziswa kakhulu kuma-transformer wokusabalalisa kumakhompyutha we-elekthronikhi ukuze ibhale ngaphezulu amasignali wokuphazamiseka kwemodi ejwayelekile Ekudizayineni kwephaneli yokulawula, ikhoyili yemodi ejwayelekile ikwazi ukusebenza kwesihlungi se-EMI, vimbela amagagasi kagesi abangelwa ulayini wamandla wejubane eliphezulu ekuthumeleni ezintweni ezibonakalayo ezinemisebe engaphandle.
Kungani ukuminyaniswa kwemodi ejwayelekile kungamelana ne-EMI?
Ukuqonda lokhu kangcono, kubalulekile ukuthi uqale uhlaziye ukwakhiwa kokuminyaniswa kwemodi ejwayelekile.
Izihlungi zokudlula eziphansi zokuminyaniswa kwemodi ejwayelekile ye-USB, i-La ne-Lb iminyango yemodi ejwayelekile.Amakhoyili amabili alinyazwa ku-coil efanayo ye-transformer ngenani elifanayo lokujika nama-engeli esigaba (ukuhlehlisa i-coil inductor) .Ngakho-ke, lapho yonke imisinga ejwayelekile in ukudlula kwesifunda kudonsa imodi ejwayelekile, imisinga enjalo idala amandla kazibuthe ezinhlangothini eziphambene kwikhoyili ye-inductor enesigaba esifanayo i-Angle futhi iyaphikisana. Kuleli qophelo, yonke imisinga ejwayelekile yesiginali yedatha ihlupheka ngama-resistor coil (nenani elincane ukumunca ukushaqeka ngenxa ye-inductance yokuhamba); Lapho imodi ejwayelekile yamanje igeleza ngekhoyili, ngoba imodi ejwayelekile yamanje isendaweni eyodwa, ikhoyili izokwakha amandla kazibuthe ohlangothini olufanayo, kanye nokusabela okukhohlisayo kwekhoyili izokwanda, yenze ikhoyili iziphathe njenge-impedance ephezulu yesici, ngaleyo ndlela kube nomphumela wokulindela ukushaqeka olindelekile.
Ngakho-ke, i-exponential current-mode current izoncishiswa yi-coefficient ukufeza okuqondiwe kwesihlungi.Ngokweqiniso, uma ukuphela komunye walesi sihlungi sephasi eliphansi kuxhunywe kusiginali sokuphazamiseka kanti esinye isiphetho sixhunywe kudivayisi ethintekile futhi umshini, i-La ne-C1, i-Lb ne-C2 izokhiqiza amasethi amabili ezihlungi eziphasa kancane ezikwazi ukukhohlisa amasignali wokuphazamiseka wokungeniswa we-elektroni ejwayelekile esendleleni eya kumasignali aphansi kakhulu wokuhlukanisa.
Isifunda asikwazi ukucindezela kuphela ukudluliswa kwesignali engaphandle ye-electromagnetic induction, kepha futhi sinciphise isignali ye-electromagnetic induction ebangelwa ulayini ocacile uqobo ekusebenzeni kwe-coefficient, ngaleyo ndlela inciphise ngempumelelo ukulimala kwesignali yokuphazamiseka ngokumelene namandla we-tensile.
Njengamanje, imodi ejwayelekile yokuklinya ekhiqizwa yinkampani inezinzuzo zokucindezela imisindo yokuvama kakhulu kanye nezinyathelo zokuvimbela, ukwakheka kwemodi ejwayelekile, i-coefficient yokudlulisela isignali embi, usayizi omncane, okulula ukuyisebenzisa, ukuzinza okuhle, okulula ukuyisebenzisa nekhwalithi ephezulu Isetshenziswa kabanzi kwimishini yokulinganisa umsindo kabili, ibhalansi yama-multi-frequency, isici se-impedance transformer, isiguquli esilinganiselayo nesingalingani, njll.
Kukhona ne-usb ene-ferrite core common-mode choke coil / EMI inductance filter, enama-series amaningi amatshe, ukucindezela umsindo okuhle nezindlela zokuvimbela, ukucindezela komsindo ojwayelekile ojwayelekile nemodi yedatha yomsindo ohlukile, vimbela isignali yokuphazanyiswa imodi yokuhlukanisa ephansi isignali yedatha yomsindo, isignali yedatha enejubane hhayi ukusonteka, usayizi omncane, ukuzinza okuhle, ukusetshenziswa kalula, izinzuzo zekhwalithi ephezulu.
Izintambo ze-USB zamakhompiyutha womuntu siqu nezinto zokwenziwa, izintambo ze-IEEE1394 zamabhokisi we-DVC ne-TV set-top, namasiginali alalelwayo wamaphaneli wokusebenza we-LCD nezilinganiso zokusebenza ezansi.
Lokho ukwethulwa kwesihlungi sephasi esiphansi sokuminyaniswa kwemodi ejwayelekile. Ngiyethemba uyayithanda! Singumkhiqizi , uma udinga ukuthenga noma ukwenza ngezifiso, wamukelekile ukubonisana ~
Isikhathi Iposi: Nov-02-2020