Yintoni i-EMI Electromagnetic Interference

Yintoni i-EMI Electromagnetic Interference
Imvelaphi
Ukuphazamiseka kwe-electromagnetic (EMI) kuchazwa ngokubanzi njengalo naluphi na uphazamiseko lombane okanye imagnethi eyehlisa isidima okanye iphazamise imfezeko yomqondiso okanye amacandelo kunye nemisebenzi yesixhobo sombane.Uphazamiseko lwe-electromagnetic, kubandakanywa uphazamiseko lwamaza kanomathotholo, luwela ngokubanzi kwiindidi ezimbini ezibanzi.Ukukhutshwa kweNarrowband ngokuqhelekileyo kwenziwa ngabantu kwaye kuvalelwe kwindawo encinci yerediyo.I-Hum evela kwiintambo zamandla ngumzekelo omhle wokukhutshwa kwe-narrowband.Ziyaqhubeka okanye ziqhelekile.Imitha yebroadband inokwenziwa ngumntu okanye yendalo.Bathanda ukuchaphazela imimandla ebanzi ye-electromagnetic spectrum.Ziziganeko zakhe ezizenzekela manqaphanqapha, okanye eziqhubekayo.Yonke into ukusuka ekubetheni kombane ukuya kwiikhompyuter ivelisa imitha ye-broadband.
umthombo we-EMI
Ukuphazamiseka kwe-electromagnetic ezijongana nezihluzi ze-EMI kunokuza ngeendlela ezininzi ezahlukeneyo.Ngaphakathi kwezixhobo zombane, ukuphazamiseka kunokwenzeka ngenxa ye-impedance, i-current currents kwiingcingo ezidibeneyo.Isenokubangelwa kukutshintsha kwamandla ombane kwii-conductor.I-EMI iveliswa ngaphandle ngamandla asemajukujukwini afana namadangatye elanga, amandla okanye iintambo zomnxeba, izixhobo zombane, kunye neentambo zombane.Uninzi lwe-EMI iveliswa kunye neentambo zombane kwaye zigqithiselwe kwisixhobo.Izihluzi ze-EMI zizixhobo okanye iimodyuli zangaphakathi ezenzelwe ukunciphisa okanye ukuphelisa ezi ntlobo zokuphazamiseka.
Isihluzi se-EMI
Ngaphandle kokungena kwisayensi engqongqo, uninzi lokuphazamiseka kwe-electromagnetic kuluhlu oluphezulu lwamaza.Oku kuthetha ukuba xa ulinganisa umqondiso onje nge-sine wave, amaxesha aya kuba kufutshane kakhulu.Izihluzi ze-EMI zineenxalenye ezimbini, i-capacitor kunye ne-inductor, ezisebenza kunye ukucinezela le miqondiso.IiCapacitors zicinezela imisinga ethe ngqo kwaye zigqithise imisinga etshintshanayo apho izixa ezikhulu zokuphazamiseka kwe-electromagnetic zingeniswa kwisixhobo.I-inductor ngokusisiseko sisizibuthe esincinci sombane esigcina amandla kumhlaba wemagnethi xa ikhoyo ngoku idlula kuwo, inciphisa amandla ombane xa ewonke.Ii-Capacitors ezisetyenziswa kwiifilitha ze-EMI, ezibizwa ngokuba yi-shunt capacitors, zigcina ii-current frequency currents ngaphakathi koluhlu oluthile kude nesekethe okanye icandelo.I-shunt capacitor yondla i-frequency frequency current / interference kwi-inductor ebekwe kuthotho.Njengoko ngoku idlula kwi-inductor nganye, amandla onke okanye amandla ombane ayancipha.Ngokufanelekileyo, i-inductors inciphisa ukuphazamiseka kwi-zero.Oku kukwabizwa ngokuba mfutshane ukuya emhlabeni.Izihluzi ze-EMI zisetyenziswa kwiintlobo ngeentlobo zezicelo.Zifumaneka kwizixhobo zaselabhoratri, izixhobo zikanomathotholo, iikhompyutha, izixhobo zonyango, kunye nezixhobo zasemkhosini.
Funda malunga nezisombululo zethu zokucoca ze-EMI/EMC

IiCapacitors zicinezela imisinga ethe ngqo kwaye zigqithise imisinga etshintshanayo apho izixa ezikhulu zokuphazamiseka kwe-electromagnetic zingeniswa kwisixhobo.I-inductor sisixhobo esincinci se-electromagnetic esigcina amandla kumhlaba wemagnethi xa umbane ugqithiswa kuwo, nto leyo ebangela ukuhla kwamandla ombane ngokubanzi.Ii-Capacitors ezisetyenziswa kwiifilitha ze-EMI, ezibizwa ngokuba yi-shunt capacitors, zigcina ii-current frequency currents ngaphakathi koluhlu oluthile kude nesekethe okanye icandelo.I-shunt capacitor yondla i-frequency frequency current / interference kwi-inductor ebekwe kuthotho.Njengoko ngoku idlula kwi-inductor nganye, amandla onke okanye amandla ombane ayancipha.Ngokufanelekileyo, i-inductors inciphisa ukuphazamiseka kwi-zero.Oku kukwabizwa ngokuba mfutshane ukuya emhlabeni.Izihluzi ze-EMI zisetyenziswa kwiintlobo ngeentlobo zezicelo.
Funda ngakumbi malungaI-DOREXSEMI izihluzi apha.