Kodi EMI Electromagnetic Interference ndi chiyani

Kodi EMI Electromagnetic Interference ndi chiyani
Mbiri
Electromagnetic interference (EMI) imatanthauzidwa momveka bwino ngati kusokoneza kulikonse kwamagetsi kapena maginito komwe kumawononga kapena kusokoneza kukhulupirika kwa ma siginecha kapena zigawo ndi ntchito za zida zamagetsi.Kusokoneza kwa ma elekitiroleti, kuphatikiza kusokoneza ma frequency a wailesi, nthawi zambiri kumagwera m'magulu awiri akulu.Utsi wa Narrowband nthawi zambiri umakhala wopangidwa ndi anthu ndipo umakhala kudera laling'ono la ma wailesi.Hum kuchokera ku zingwe zamagetsi ndi chitsanzo chabwino cha mpweya wa narrowband.Amakhala mosalekeza kapena mwa apo ndi apo.Ma radiation a Broadband amatha kukhala opangidwa ndi anthu kapena achilengedwe.Amakonda kukhudza zigawo zazikulu za ma electromagnetic spectrum.Ndizochitika zake zomwe zimachitika mwachisawawa, mwa apo ndi apo, kapena mosalekeza.Chilichonse kuyambira kugunda kwamphezi mpaka makompyuta chimatulutsa ma radiation a Broadband.
Chithunzi cha EMI
Kusokoneza kwamagetsi komwe zosefera za EMI zimatha kubwera m'njira zosiyanasiyana.Mkati mwa zida zamagetsi, kusokoneza kumatha kuchitika chifukwa cha kutsekeka, kubweza mafunde mu mawaya olumikizana.Zitha kuchitikanso chifukwa cha kusintha kwa magetsi kwa ma conductor.EMI imapangidwa kunja ndi mphamvu yamlengalenga monga magetsi adzuwa, magetsi kapena ma foni, zida, ndi zingwe zamagetsi.Zambiri za EMI zimapangidwa motsatira mizere yamagetsi ndikutumizidwa ku zida.Zosefera za EMI ndi zida kapena ma module amkati opangidwa kuti achepetse kapena kuthetsa kusokoneza kwamtunduwu.
EMI fyuluta
Popanda kuyang'ana mu sayansi yolimba, kusokoneza kwambiri kwa ma electromagnetic kumakhala pama frequency apamwamba.Izi zikutanthauza kuti poyeza chizindikiro monga sine wave, nthawizo zimakhala pafupi kwambiri.Zosefera za EMI zili ndi zigawo ziwiri, capacitor ndi inductor, zomwe zimagwirira ntchito limodzi kupondereza zizindikirozi.Ma capacitor amapondereza mafunde achindunji ndikudutsa mafunde osinthasintha momwe kusokoneza kwakukulu kwamagetsi kumabweretsedwa mu chipangizocho.Inductor kwenikweni ndi maginito ang'onoang'ono amagetsi omwe amasunga mphamvu mu mphamvu ya maginito pamene mphamvu ikudutsamo, kuchepetsa mphamvu yonse yamagetsi.Ma capacitor omwe amagwiritsidwa ntchito muzosefera za EMI, otchedwa shunt capacitors, amasunga ma frequency apamwamba mkati mwamtundu wina kutali ndi dera kapena gawo.Shunt capacitor imadyetsa ma frequency apamwamba / kusokoneza kwa inductor yoyikidwa mndandanda.Pamene panopa akudutsa mu inductor iliyonse, mphamvu yonse kapena magetsi amatsika.Momwemo, ma inductors amachepetsa kusokoneza mpaka zero.Izi zimatchedwanso zazifupi mpaka pansi.Zosefera za EMI zimagwiritsidwa ntchito m'njira zosiyanasiyana.Amapezeka m'zida za labotale, zida za wailesi, makompyuta, zida zamankhwala, ndi zida zankhondo.
Phunzirani za mayankho athu osefa a EMI/EMC

Ma capacitor amapondereza mafunde achindunji ndikudutsa mafunde osinthasintha momwe kusokoneza kwakukulu kwamagetsi kumabweretsedwa mu chipangizocho.Inductor kwenikweni ndi kachipangizo kakang'ono ka maginito kamene kamasunga mphamvu mu mphamvu ya maginito pamene mphamvu ikudutsamo, zomwe zimapangitsa kuti magetsi awonongeke.Ma capacitor omwe amagwiritsidwa ntchito muzosefera za EMI, otchedwa shunt capacitors, amasunga ma frequency apamwamba mkati mwamtundu wina kutali ndi dera kapena gawo.Shunt capacitor imadyetsa ma frequency apamwamba / kusokoneza kwa inductor yoyikidwa mndandanda.Pamene panopa akudutsa mu inductor iliyonse, mphamvu yonse kapena magetsi amatsika.Momwemo, ma inductors amachepetsa kusokoneza mpaka zero.Izi zimatchedwanso zazifupi mpaka pansi.Zosefera za EMI zimagwiritsidwa ntchito m'njira zosiyanasiyana.
Dziwani zambiri zaDOREXSEMI zosefera apa.