nkhani

A wamba mode inductorzikutanthauza kuti makombero awiri amakulungidwa pachikatikati chachitsulo chimodzi, chokhala ndi mapindikidwe osiyana, kuchuluka kwa makhoti ndi gawo lomwelo. Zosefera za EMI zomwe zimagwiritsidwa ntchito posinthira magetsi kuti zisefe ma siginecha amtundu wamtundu wamba, zosefera za EMI zimagwiritsidwa ntchito kupondereza mafunde amagetsi opangidwa ndi mizere yothamanga kwambiri kuti itulukire kunja. The wamba mumalowedwe inductance pa athandizira gawo mphamvu zambiri kuchepetsa ma radiation ndi mkulu pafupipafupi wamba mode phokoso. Komabe, inductance yayikulu yodziwika bwino imakhala ndi zotsatira zabwino zopondereza kusokonezeka kwapang'onopang'ono, ndipo ma frequency apamwamba amatha kuipiraipira, koma kumverera kwapang'ono kumakhala ndi vuto loletsa kupondereza kusokonezeka kwapang'onopang'ono.

Zili zoonekeratu kupondereza zotsatira wamba mode phokoso. Mfundo yogwira ntchito ndi yakuti pamene njira yodziwika bwino ikudutsa m'chigawocho, ma inductances a ma inductors awiri amafanana. Koma pamaphokoso amtundu wosiyana, ma inductance awiriwa ndi ofanana ndi kutenga kusiyana, mtengo wa inductance umachepa, ndipo zopondereza zidzachepa.

Kukula kwa inductance wamba kumakhudza mwachindunji magwiridwe antchito a EMC. Ntchito yayikulu ndikupatula chizindikiro chodziwika bwino ndikuchepetsa kusokoneza wamba wamba, potero kuchepetsa kukhudzidwa kwa magetsi. Itha kuchepetsanso chizindikiro chamkati chodziwika bwino ndikuchepetsa kukhudzidwa kwa gridi yamagetsi. Komabe, inductance yayikulu yodziwika bwino imakhala ndi zotsatira zabwino zopondereza kusokonezeka kwapang'onopang'ono, ndipo ma frequency apamwamba amatha kuipiraipira, koma kumverera kwapang'ono kumakhala ndi vuto loletsa kupondereza kusokonezeka kwapang'onopang'ono.

Zomwe timakonda kugwiritsa ntchito kumapeto kwa gawo lamagetsi ndi x mphamvu, y mphamvu ndi njira wamba inductance. Kuthekera kumakhala ndi cholepheretsa chochepa ku chizindikirocho, chomwe chimakhala ngati chizindikiro chodutsa ndi cholumikizira. The inductance ndi yopingasa kwambiri ku siginecha ndipo imathandizira kuwonetsa ndi kutengera ma siginecha osokoneza pafupipafupi.

Kusokoneza pakati pa mizere iwiri ya mphamvu pansi kumatchedwa common mode interference, ndipo kusokoneza pakati pa mizere iwiri ya mphamvu kumatchedwa differential mode interference. Pamene inductance ndi capacitance zikuphatikizidwa mu fyuluta, zotsatira zosefera zimakhala zabwinoko, ndi gulu lafupipafupi kumene inductance ndi capacitance zimagwira ntchito. Komanso zosiyana. The Y capacitor ndi Y capacitor imagwira nawo ntchito zosefera zosokoneza wamba, ndipo X capacitor imagwira ntchito ngati chizindikiro chachifupi, kuchepetsa njira yomwe chizindikiro chosiyana chimayendera, potero kuchepetsa kutsika komwe kumayambitsidwa ndi magawo a parasitic. kuzungulira ndi kuchititsa kutulutsa kwamphamvu kwambiri.

Pamene inductance kapena capacitance imachotsedwa pamapangidwe, gawo lotsalira lidzagwirabe ntchito, koma zotsatira zake zidzakhala zoipa kwambiri. Nthawi zambiri, kukulitsa kwamtundu wamba, kumakhala bwinoko. Posankha inductor yamtundu wamba, kusankhako kumangotengera ma frequency a impedance. Panthawi imodzimodziyo, chidwi chiyenera kulipidwa ku chikoka cha njira yosiyana yosokoneza chizindikiro.