Nubwo uburyo bwa chokes busanzwe bukunzwe, ubundi bushobora kuba akayunguruzo ka EMI monolithic.Iyo igenwe neza, ibyo bikoresho byinshi bya ceramic bitanga uburyo bwiza bwo kwanga urusaku.
Ibintu byinshi byongera ubwinshi bw "urusaku" rushobora kwangiza cyangwa kubangamira imikorere yibikoresho bya elegitoronike. Imodoka zuyu munsi ni urugero rwiza.Mu modoka, uzasangamo Wi-Fi, Bluetooth, radio satelite, sisitemu ya GPS, na iyo niyo ntangiriro gusa. Kugira ngo ukemure urusaku rw’urusaku, inganda zisanzwe zikoresha ingabo zo gukingira hamwe na EMI muyungurura kugira ngo zikureho urusaku rutifuzwa.Ariko ibisubizo gakondo byo gukuraho EMI / RFI ntibikiri bihagije.
Iki kibazo kiyobora OEM nyinshi kwirinda gukoresha 2-capacitori itandukanye, 3-capacitor (imwe X capacitori na 2 Y capacitor), filteri yo kugaburira, uburyo busanzwe bwo kuniga, cyangwa guhuza ibyo kugirango bikemuke neza nka filteri ya EMI ya monolithic hamwe na urusaku rwiza kwangwa muri pake nto.
Iyo ibikoresho bya elegitoronike byakira amashanyarazi akomeye, amashanyarazi adakenewe arashobora kwinjizwa mumuzunguruko kandi bigatera gukora utabishaka - cyangwa bikabangamira imikorere yabigenewe.
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Nubwo ingufu zikoreshwa ziturutse hanze ari nto, niba zivanze numurongo wa radio ukoreshwa mugutangaza no gutumanaho, birashobora gutera kubura kwakirwa, urusaku rudasanzwe mumajwi, cyangwa guhagarika amashusho.Niba ingufu zikomeye, zirashobora kwangiza ibikoresho bya elegitoroniki.
Inkomoko zirimo urusaku rusanzwe (urugero, gusohora amashanyarazi, kumurika, nandi masoko) hamwe n urusaku rwakozwe n'abantu (urugero, urusaku rwitumanaho, ibikoresho bisohora ukoresheje imirongo myinshi, ibyuka bidakenewe, nibindi.) Mubisanzwe, urusaku rwa EMI / RFI ni urusaku rusanzwe , igisubizo rero ni ugukoresha EMI muyungurura kugirango ukureho imirongo myinshi idakenewe, haba nkigikoresho cyihariye cyangwa cyinjijwe mu kibaho cyumuzunguruko.
EMI Muyunguruzi EMI muyunguruzi ubusanzwe igizwe nibice bya pasiporo, nka capacator na inductors, bihujwe no gukora uruziga.
“Inductor zemerera DC cyangwa umuyoboro muke muto kunyuramo mugihe uhagarika imiyoboro idakenewe, idakenewe.Imashini zitanga inzira zitanga inzitizi nkeya kugirango ziyobore urusaku rwinshi ruva muyungurura rwinjizwa mu mbaraga cyangwa ku butaka. "
Ubusanzwe uburyo-busanzwe bwo gushungura burimo gushiramo-munsi-muyunguruzi ukoresheje capacator zitambutsa ibimenyetso hamwe numurongo uri munsi yatoranijwe yo guhagarika no guhuza ibimenyetso hamwe numurongo uri hejuru yumurongo wo guhagarika.
Ikintu rusange cyo gutangiriraho ni ugushira hamwe ubushobozi bwa capacitori muburyo butandukanye, hamwe na capacitor imwe hagati ya buri kimenyetso cyo gutandukanya ibintu hamwe nubutaka. Akayunguruzo ka capacitive muri buri kuguru kayobora EMI / RFI kubutaka hejuru yumurongo wagenwe. Kubera ko iyi miterere irimo kohereza ibimenyetso byibyiciro bitandukanye hejuru yinsinga zombi, igipimo cyerekana-urusaku kiratera imbere mugihe urusaku rudakenewe rwoherejwe hasi.
Cambrelin yagize ati: "Ikibabaje ni uko ubushobozi bwa MLCCs bufite dielectrics ya X7R (ubusanzwe bukoreshwa muri iki gikorwa) burashobora gutandukana cyane hamwe nigihe, voltage ibogamye n'ubushyuhe".
Ati: "Nubwo rero ubushobozi bwa capacator ebyiri zahujwe cyane mugihe runaka mubushyuhe bwicyumba kuri voltage nkeya, birashoboka ko bizarangirana nagaciro keza cyane mugihe kimwe, voltage cyangwa ubushyuhe bwahindutse.Uku kudahuza hagati yinsinga zombi bizavamo ibisubizo bitaringaniye hafi yo kuyungurura.Ku bw'ivyo, ihindura urusaku rusanzwe n'urusaku rutandukanye. ”
Ikindi gisubizo ni uguhuza agaciro kanini “X” hagati yubushobozi bubiri bwa “Y”. Shunt ya “X” itanga uburyo bwiza bwo kugereranya, ariko kandi ifite ingaruka zitifuzwa zo gushungura ibimenyetso bitandukanye.Birashoboka ko igisubizo gikunze kugaragara nubundi buryo bwo hasi ya filteri ni uburyo busanzwe bwo kuniga.
Uburyo busanzwe bwa choke ni transformateur ya 1: 1 hamwe nimpinduka zombi zikora nkibanze nizisumbuye.Muri ubu buryo, umuyoboro unyuze kumurongo umwe utera umuyaga utandukanye nuwundi uzunguruka.Ikibabaje ni uko imitsi isanzwe nayo iremereye, ihenze, kandi iroroshye kunanirwa-guterwa no kunanirwa.
Nubwo bimeze bityo, uburyo bukwiye bwo kuniga hamwe no guhuza neza no guhuza hagati yumuyaga biragaragara mu bimenyetso bitandukanye kandi bifite imbogamizi nyinshi ku rusaku rusanzwe.Ikibi kibi cyo guhitisha uburyo busanzwe ni intera ntarengwa bitewe nubushobozi bwa parasitike.Ku bikoresho byatanzwe byingenzi , hejuru cyane inductance ikoreshwa kugirango ibone akayunguruzo gake, niko bisabwa byinshi, bityo bikavamo ubushobozi bwa parasitike idashobora kunyura hejuru ya filteri.
Kudahuza hagati yimihindagurikire bitewe no kwihanganira imashini zikora zitera guhinduranya uburyo, aho igice cyingufu zikimenyetso gihindurwamo urusaku rusanzwe naho ubundi.Ibihe bishobora gutera amashanyarazi ya magnetiki hamwe nibibazo byubudahangarwa. Kudahuza nabyo bigabanya inductance nziza ya buri kuguru.
Ibyo ari byo byose, uburyo busanzwe bwa chokes butanga inyungu zingenzi kurenza ubundi buryo mugihe ibimenyetso bitandukanye (kunyura) bikorera mumurongo umwe nkurusaku rusanzwe rugomba kwangwa.Ukoresheje uburyo busanzwe bwo kuniga, inzira yerekana ibimenyetso irashobora kwagurwa Kuri uburyo busanzwe bwo kwangwa.
Monolithic EMI Akayunguruzo Nubwo uburyo busanzwe bwa chokes bukunzwe, filtri ya EMI ya monolithic nayo irashobora gukoreshwa.Iyo yashyizwe neza, ibyo bikoresho byinshi bya ceramic ceramic bitanga urusaku rwiza rusanzwe rwangwa.Bahuza imashini ebyiri ziringaniza shunt mumapaki imwe kugirango bahagarike inductance hamwe no gukingira .Iyiyungurura ikoresha inzira ebyiri zitandukanye z'amashanyarazi mugikoresho kimwe gihujwe na bine byo hanze.
Kugira ngo wirinde urujijo, twakagombye kumenya ko muyunguruzi ya EMI ya monolithic ntabwo ari capacitori ya gakondo.Nubwo isa kimwe (gupakira no kugaragara kimwe), biratandukanye cyane mubishushanyo, kandi ntabwo bihujwe muburyo bumwe.Nkindi EMI muyunguruzi, monolithic EMI muyunguruzi ihuza imbaraga zose hejuru yumurongo wateganijwe wo guhitamo hanyuma uhitemo kunyuza gusa ibimenyetso byifuzwa byifuzwa, mugihe uhindura urusaku udashaka "hasi".
Nyamara, urufunguzo ni inductance nkeya cyane hamwe no guhuza impedance.Kuyungurura monolithic EMI muyunguruzi, ama terinal ahujwe imbere imbere na electrode rusange (ingabo) electrode iri mubikoresho, kandi amasahani yatandukanijwe na electrode yerekana.Electrostatike, node eshatu z'amashanyarazi. Byakozwe na bibiri bya capacitive igice gisangiye electrode ihuriweho, byose bikubiye mumubiri umwe ceramic.
Impirimbanyi hagati yimigabane ibiri ya capacitor nayo isobanura ko ingaruka za piezoelectric zingana kandi zinyuranye, guhagarika undi.Ubu bucuti nabwo bugira ingaruka kubushyuhe no guhindagurika kwa voltage, bityo ibice kumirongo yombi birasaza.Niba hari kimwe kibabaje kuri EMI monolithic EMI muyunguruzi, ni uko batazakora niba urusaku rusanzwe rusanzwe ruri ku murongo umwe n'ikimenyetso gitandukanye. "Muri iki gihe, kuniga uburyo rusange ni igisubizo cyiza", Cambrelin.
Kurikirana ibibazo byanyuma byubushakashatsi bwisi hamwe nibibazo byinyuma muburyo bworoshye-gukoresha, imiterere-yohejuru. Hindura, dusangire kandi ukuremo uyumunsi hamwe nikinyamakuru cyambere cyubushakashatsi.
Ihuriro ryambere ku isi rikemura ibibazo EE ikubiyemo microcontrollers, DSP, imiyoboro, igereranya nigishushanyo mbonera, RF, ibikoresho bya elegitoroniki, inzira ya PCB, nibindi byinshi
Uburenganzira Copyright 2022Ibyerekeye Twebwe
Igihe cyo kohereza: Apr-19-2022
