Igishushanyo cyihuse cya PCB Igishushanyo mbonera

Hamwe namakuru yigihe cyamakuru, ikoreshwa ryibibaho bya pcb riragenda ryaguka, kandi iterambere ryibibaho bya pcb riragenda rirushaho kuba ingorabahizi.Nkuko ibikoresho bya elegitoronike bitunganijwe cyane kuri PCB, kwivanga kwamashanyarazi byabaye ikibazo byanze bikunze.Mugushushanya no gushyira mubikorwa imbaho ​​nyinshi, ibimenyetso byerekana ibimenyetso hamwe nimbaraga zigomba gutandukana, kuburyo igishushanyo nogutondekanya umurongo ari ngombwa cyane.Igishushanyo cyiza gishobora kugabanya cyane ingaruka za EMI hamwe ninzira nyabagendwa.

Ugereranije nibisanzwe bisanzwe byubatswe, igishushanyo cyibibaho byinshi byongeramo ibimenyetso byerekana ibimenyetso, insinga, kandi bigategura ingufu zigenga nubutaka.Ibyiza byibibaho byinshi bigaragarira cyane mugutanga voltage ihamye yo guhinduranya ibimenyetso bya digitale, ndetse no kongera imbaraga kuri buri kintu icyarimwe, bikagabanya neza intera iri hagati yibimenyetso.

Amashanyarazi akoreshwa ahantu hanini hashyirwa umuringa no ku butaka, ibyo bikaba bishobora kugabanya cyane imbaraga zo guhangana n’umurongo w’amashanyarazi hamwe n’ubutaka, ku buryo imbaraga z’umuriro ziri ku murongo w'amashanyarazi zihamye, n'ibiranga buri murongo w'ikimenyetso Birashobora kwizerwa, bifite akamaro kanini kuburizamo no kugabanya inzira.Mu gishushanyo mbonera cy’umuzunguruko wohejuru, hasobanuwe neza ko hejuru ya 60% ya gahunda yo gutondeka igomba gukoreshwa.Ikibaho kinini, ibiranga amashanyarazi, hamwe no guhagarika imirasire ya electromagnetique byose bifite inyungu ntagereranywa kurenza imbaho ​​zo hasi.Kubijyanye nigiciro, muri rusange nukuvuga, ibyiciro byinshi birahari, nigiciro gihenze, kuko ikiguzi cyubuyobozi bwa PCB kijyanye numubare wabyo, n'ubucucike kuri buri gace.Nyuma yo kugabanya umubare wibice, umwanya wiring uzagabanuka, bityo wongere ubwinshi bwinsinga., ndetse wujuje ibisabwa kugirango ugabanye umurongo ubugari nintera.Ibi birashobora kongera ibiciro uko bikwiye.Birashoboka kugabanya gutondeka no kugabanya ikiguzi, ariko bituma imikorere yamashanyarazi iba mibi.Ubu bwoko bwibishushanyo ntibisanzwe.

Urebye insinga za microstrip ya PCB kuri moderi, igice cyubutaka nacyo gishobora gufatwa nkigice cyumurongo wohereza.Ubutaka bwumuringa burashobora gukoreshwa nkikimenyetso cyumurongo uzenguruka inzira.Indege yamashanyarazi ihujwe nindege yubutaka binyuze muri capacitor ya decoupling, mugihe cya AC.Byombi birasa.Itandukaniro riri hagati yumurongo muke hamwe numuyoboro mwinshi uriho ni uko.Mugihe gito, kugaruka kurubu gukurikira inzira byibura.Mugihe kinini, kugaruka kurubu biri munzira byibura inductance.Ibiriho bigaruka, byibanze kandi bikwirakwizwa munsi yikimenyetso.

Mugihe cyumuvuduko mwinshi, niba umugozi ushyizwe kumurongo wubutaka, kabone niyo haba hari imirongo myinshi, kugaruka kurubu bizasubira kumurongo wibimenyetso biva kumurongo wiring munsi yinzira yatangiriye.Kuberako iyi nzira ifite inzitizi nkeya.Ubu bwoko bwo gukoresha ubushobozi bunini bwo guhuza imbaraga kugirango uhagarike umurima wamashanyarazi, hamwe nubushobozi buke bwo guhuza imbaraga kugirango uhagarike uruganda rukuruzi kugirango rukomeze reaction nkeya, twita kwikingira.

Birashobora kugaragara uhereye kuri formulaire ko iyo ikigezweho gisubiye inyuma, intera iva kumurongo wikimenyetso iringaniza nubucucike bwubu.Ibi bigabanya umwanya wa loop hamwe na inductance.Mugihe kimwe, birashobora kwemezwa ko niba intera iri hagati yumurongo wikimenyetso nu muzingo yegereye, imigezi yombi irasa mubunini kandi bitandukanye mubyerekezo.Kandi imbaraga za magnetique zakozwe n'umwanya wo hanze zirashobora kuzimya, EMI yo hanze nayo ni nto cyane.Mu gishushanyo mbonera, nibyiza ko buri kimenyetso cyerekana ibimenyetso bihuye nubutaka bwegeranye cyane.

Mu kibazo cyambukiranya umuhanda hasi, umuhanda unyuramo uturuka kumuzunguruko mwinshi biterwa ahanini no guhuza inductive.Duhereye kuri formulaire yavuzwe haruguru, birashobora kwemezwa ko imirongo izenguruka yakozwe nimirongo ibiri yerekana ibimenyetso ifunze hamwe.Hazabaho rero kwivanga kwa magneti.

K muri formulaire ijyanye nikimenyetso cyo kuzamuka igihe nuburebure bwumurongo wikimenyetso.Mugihe cyo gutondekanya, kugabanya intera iri hagati yikimenyetso nicyerekezo cyubutaka bizagabanya neza intambamyi ziva mubutaka.Iyo ushyize umuringa kumurongo wamashanyarazi hamwe nubutaka kumurongo wa PCB, urukuta rwo gutandukana ruzagaragara mugace kashyizweho umuringa niba utitayeho.Kuba haribibazo nkibi birashoboka cyane bitewe nubucucike bwinshi bwanyuze mu mwobo, cyangwa igishushanyo kidafite ishingiro cyanyuze mu bwigunge.Ibi bidindiza igihe cyo kuzamuka kandi byongera umwanya wa loop.Inductance iriyongera kandi ikora inzira nyabagendwa na EMI.

Tugomba kugerageza uko dushoboye kugirango dushyireho imitwe yububiko.Ibi ni ukuzirikana imiterere yimiterere isabwa mubikorwa, kuberako imiterere idahwitse ishobora gutera ihinduka ryubuyobozi bwa pcb.Kuri buri kimenyetso cyerekana, nibyiza kugira umujyi usanzwe nkintera.Intera iri hagati yumuriro wohejuru wumuriro numujyi wumuringa bifasha gutuza no kugabanya EMI.Mu gishushanyo cyihuta cyibishushanyo mbonera, indege zubutaka zishobora kwongerwaho kugirango zitandukanya indege zerekana ibimenyetso.