Yini i-EMI Electromagnetic Interference

Yini i-EMI Electromagnetic Interference
Ingemuva
I-Electromagnetic interference (EMI) ichazwa kabanzi njenganoma yikuphi ukuphazamiseka kukagesi noma kazibuthe okwehlisa isithunzi noma okuphazamisa ubuqotho besiginali noma izakhi nemisebenzi yemishini kagesi.Ukuphazamiseka kwe-electromagnetic, okuhlanganisa ukuphazamiseka kwefrikhwensi yomsakazo, ngokuvamile iwela ezigabeni ezimbili ezibanzi.Ukukhishwa kwe-Narrowband ngokuvamile kwenziwa abantu futhi kuvalelwe endaweni encane yomsakazo.I-Hum evela kolayini bamandla iyisibonelo esihle sokukhishwa kwe-narrowband.Ziyaqhubeka noma azivamile.Imisebe ye-broadband ingenziwa umuntu noma yemvelo.Zijwayele ukuthikameza izifunda ezibanzi ze-electromagnetic spectrum.Izehlakalo zakhe eziphuma kanye nje ezingahleliwe, ezingavamile, noma eziqhubekayo.Yonke into kusukela ekushayweni kombani kuya kumakhompyutha ikhiqiza imisebe ye-broadband.
Umthombo we-EMI
Ukugxambukela kwe-electromagnetic izihlungi ze-EMI ezibhekana nakho kungafika ngezindlela eziningi ezahlukene.Ngaphakathi kwemishini kagesi, ukuphazamiseka kungenzeka ngenxa ye-impedance, i-reverse currents ezintanjeni ezixhumanisayo.Kungase futhi kubangelwe ukushintsha kwamandla kagesi kuma-conductor.I-EMI ikhiqizwa ngaphandle ngamandla esikhala njengama-solar flares, amandla noma izintambo zocingo, izinto ezisetshenziswayo, nezintambo zikagesi.Iningi le-EMI likhiqizwa ngezintambo zikagesi futhi lidluliselwe ezintweni zokusebenza.Izihlungi ze-EMI zingamadivayisi noma amamojula angaphakathi aklanyelwe ukunciphisa noma ukuqeda lezi zinhlobo zokuphazamiseka.
Isihlungi se-EMI
Ngaphandle kokungena kwisayensi eqinile, ukuphazamiseka okuningi kwe-electromagnetic kusebangeni lamafrikhwensi aphezulu.Lokhu kusho ukuthi uma ukala isignali efana negagasi le-sine, izikhathi zizoba seduze kakhulu.Izihlungi ze-EMI zinezingxenye ezimbili, i-capacitor kanye ne-inductor, ezisebenza ndawonye ukucindezela lezi zimpawu.Ama-Capacitor acindezela ama-currents aqondile futhi adlule ama-curse ashintshayo lapho inani elikhulu lokuphazanyiswa kwe-electromagnetic lilethwa ocingweni.I-inductor iwuzibuthe omncane kagesi ogcina amandla endaweni kazibuthe lapho ugesi udlula kuwo, wehlisa i-voltage iyonke.Ama-Capacitor asetshenziswa kuzihlungi ze-EMI, abizwa ngokuthi ama-shunt capacitors, agcina amaza omoya aphezulu ngaphakathi kwebanga elithile kude nesekethe noma ingxenye.I-shunt capacitor iphakela imvamisa ephezulu yamanje/ukuphazamiseka ku-inductor ebekwe ochungechungeni.Njengoba i-current idlula ku-inductor ngayinye, amandla aphelele noma i-voltage iyehla.Ngokufanelekile, ama-inductors anciphisa ukuphazamiseka kuye ku-zero.Lokhu kubizwa nangokuthi i-short to ground.Izihlungi ze-EMI zisetshenziswa ezinhlobonhlobo zezinhlelo zokusebenza.Atholakala emishinini yaselabhorethri, emishinini yomsakazo, kumakhompyutha, emishinini yezokwelapha, nasezinsizeni zezempi.
Funda mayelana nezixazululo zethu zokuhlunga ze-EMI/EMC

Ama-Capacitor acindezela ama-currents aqondile futhi adlule ama-curse ashintshayo lapho inani elikhulu lokuphazanyiswa kwe-electromagnetic lilethwa ocingweni.I-inductor iyisisetshenziswa esincane sikazibuthe esigcina amandla endaweni kazibuthe lapho amandla edlula kuyo, okubangela ukwehla kukagesi kukonke.Ama-Capacitor asetshenziswa kuzihlungi ze-EMI, abizwa ngokuthi ama-shunt capacitors, agcina amaza omoya aphezulu ngaphakathi kwebanga elithile kude nesekethe noma ingxenye.I-shunt capacitor iphakela imvamisa ephezulu yamanje/ukuphazamiseka ku-inductor ebekwe ochungechungeni.Njengoba i-current idlula ku-inductor ngayinye, amandla aphelele noma i-voltage iyehla.Ngokufanelekile, ama-inductors anciphisa ukuphazamiseka kuye ku-zero.Lokhu kubizwa nangokuthi i-short to ground.Izihlungi ze-EMI zisetshenziswa ezinhlobonhlobo zezinhlelo zokusebenza.
Funda kabanzi mayelanaI-DOREXSEMI izihlungi lapha.