Ukulwa nokuphazamiseka likhonkco elibaluleke kakhulu kuloyilo lwesekethe lwanamhlanje, olubonisa ngokuthe ngqo ukusebenza kunye nokuthembeka kwale nkqubo. Kwiinjineli zePCB, uyilo lwe-anti-lokuphazamiseka yiyona nto iphambili kunye neyonzima ethi wonke umntu ifumane ize ukuba wonke umntu abe yiNkosi.
Ubukho bokuphazamiseka kwibhodi yePCB
Okwangoku, kufuma kwafunyanwa ukuba kukho ukusebenzisana kwezine eziphambili kwi-PCB: Ingxolo yokuhambisa amandla, ukuphazamiseka komgca wokuphazamiseka, ukudibanisa kunye nokuphazamiseka kwe-elektromagnetic (i-ENI).
1. Ingxolo yoNcedo
Kwisekethe ehamba rhoqo, ingxolo yengxolo yokuhambisa amandla inefuthe elicacileyo kwisayini e-frequency. Ke ngoko, imfuneko yokuqala yokuhambisa amandla yingxolo ephantsi. Apha, umhlaba ococekileyo ubaluleke njengomthombo wamandla acocekileyo.
2. Umgca wokuhambisa
Zimbini kuphela iindidi zemigca yokuhambisa inokwenzeka kwi-PCB: I-Strip Line kunye nomgca we-microwae. Eyona ngxaki inkulu ngemigca yothumelo yimbonakalo. Ukucingisisa kuya kubangela iingxaki ezininzi. Umzekelo, umqondiso womthwalo uya kuba kukuphathwa komqondiso woqobo kunye ne-Echo Sys, eyakonyusa ubunzima bohlalutyo lwesibonakaliso; Ukucingisisa kuya kubangela ilahleko (ukubuya kwelahleko), eya kuchaphazela umqondiso. Impembelelo ibaluleke kakhulu njengoko ibangelwa kukuphazanyiswa kwengxolo.
I-3. Ukudibanisa
Umqondiso wokuphatha olwenziwe nguMthombo wokuphazamiseka bubangela ukuphazamiseka kwe-elektromagnetic kwinkqubo yokulawulwa kwe-elektroniki ngejelo elithile lokudibana. Indlela yokuphazamiseka kokuphazamiseka ayikho into engaphezulu kwenkqubo yolawulo lwe-elektroniki ngeengcingo, imigca, imigca eqhelekileyo, i-couplling ye-Couplling, i-ancocting ye-Elecking, i-Groupling, i-Groupling, njl.
4. Ukuphazamiseka kwe-elektromagnetic (i-EMI)
I-ENICROMIC yokuphazamiseka ineendidi ezimbini: iqhutywa kukuphazamiseka kunye nokuphazamiseka okukhulu. I-PRIST ibhekisele kwi-Coupling (uphazamiseko) lweempawu zenethiwekhi yombane ukuya kwenye inethiwekhi yombane ngokusebenzisa iphakathi. Isiphazamiso se-Fidreed sibhekisa kwi-coupling yokuphazamisa (ukuphazamiseka) uphawu lwayo ukuya kolunye uthungelwano lombane ngendawo. Kwindlela yokuyila ye-PCB ehamba ngesantya kunye nenkqubo yenkqubo, imiqondiso emiselweyo, imiqondiso ephakathi, izikhonkwane ezahlukeneyo, njl. Njl. umsebenzi oqhelekileyo.
I-PCB kunye namanyathelo okuchasene nesekethe
Uyilo lwe-anti-Jammil lweBhodi yeSekethe eprintiweyo luhambelana ngokusondeleyo nesekethe ethile. Okulandelayo, siya kwenza ezinye iinkcazo ngemilinganiselo emininzi eqhelekileyo ye-PCB-Jamming.
1. Uyilo lwentambo yamandla
Ngokuka ubungakanani beBhodi yeSiphaluka eprintiweyo yangoku, zama ukwandisa ububanzi bomgca wamandla ukunciphisa ukungavisisani kwe-loop. Kwangelo xesha, yenza ulwalathiso lomgca wamandla kunye nomgca ohambelana nolwalathiso losulelo lwedatha, olunceda ukuphucula amandla engxolo.
I-2. I-wire yocingo lomhlaba
Umhlaba ohlukileyo wedijithali kumhlaba we-analog. Ukuba zombini isekethe ye-Loogic kunye nesekethe emgceni kwiBhodi yeSiphaluka, kufuneka zahlukane kangangoko kunokwenzeka. Umhlaba wesekethe rhoqo ophantsi kufuneka uchithelwe ngokuhambelana nenqaku elinye kangangoko kunokwenzeka. Xa i-wiring yokwenyani inzima, inokuba ixhumene kuluhlu lwenxalenye kwaye emva koko ifakwe ngokuhambelana. Isekethe eliphezulu-frequency kufuneka libekwe kwiindawo ezininzi kwi-wire, i-cire yocingo kufuneka ibe mfutshane kwaye inobunzima, kunye ne-grid-efana ne-foil yendawo ephezulu.
Ucingo olusezantsi kufuneka lube lukhulu kangangoko kunokwenzeka. Ukuba umgca omncinci kakhulu usetyenziselwa ucingo oluqinileyo, ukutshintsha okunokubakho okunokubakho kunye nexesha eliyinciphisayo. Ke ngoko, ucingo lomhlaba kufuneka lubekwe lukhuni ukuze ludlule kathathu ukuvumelana okwangoku kwiBhodi eprintiweyo. Ukuba kunokwenzeka, ucingo lwe-cire kufuneka lube ngaphezulu kwe-2 ~ 3mm.
Ucingo olusezantsi lubonisa ilogo evaliweyo. Kwiibhodi eziprintiweyo ziqulunqwe kuphela kwimijikelezi yedijithali, uninzi lwesekethe elipheleleyo lemihlaba lilungiselelwe kwi-Lops ukuphucula ukumelana nengxolo.
I-3. Ukuhombisa ubumbeko lweCapaciTher
Enye yeendlela eziqhelekileyo zoyilo lwe-PCB kukucwangcisa i-cacrouchises efanelekileyo kwinxalenye nganye ephambili yeBhodi eprintiweyo.
Imigaqo-nkqubo yoqwalaselo ngokubanzi ye-Decoupling Datchling ngu:
① Qhagamshela i-10 ~ ye-100 ~ ye-100ktrolytic ye-elektrolyctroly kwigalelo lamandla. Ukuba kunokwenzeka, kungcono ukunxibelelana ne-100uf okanye ngaphezulu.
Umgaqo-siseko, i-chip nganye edityanisiweyo yesekethe kufuneka ixhotywe nge-0.01pf canocictor. Ukuba umsantsa webhodi eprintiweyo akwanelanga, i-1-10pf canocitor inokucwangciswa kwi-4 ~ 8 chips.
Izixhobo ezinobuchule obuthathaka bengxolo kunye notshintsho lwamandla amakhulu xa kucinyiwe, njengezixhobo zokugcina i-RAM kunye ne-RAMOUP, i-DACOUPTIC, i-DACOUPTICALS kufuneka iqhagamshelwe phakathi komgca wamandla kunye nomgca we-chip.
I-Caakotitor Imfihlelo akufuneki ukuba lide kakhulu, ngakumbi i-Prerquency Patpat Dotpat ye-Bypass ephezulu ayifikanga.
4. Iindlela zokuphelisa ukuphazamiseka kwe-elektromagnetic kwi-PCB
I-①redruce Loops: Ilogo nganye ilingana ne-eriyali, ngoko kufuneka sinciphise inani leelogo, indawo yelogo kunye nesiphumo se-antenna yelog. Qinisekisa ukuba umqondiso unendlela enye kuphela nangaliphi na amanqaku mabini, uphephe iilogo ze-artifickel, kwaye uzame ukusebenzisa ungqimba lwamandla.
Ukuthetha: Ukucoca kunokusetyenziselwa ukunciphisa i-EMI kokubini kumgca wamandla nakwilayini yomqondiso. Zintathu iindlela: Ukucofa i-chieticces, iifilitha ze-EMI, kunye nezinto zemagnethi.
③shield.
Zama ukunciphisa isantya sezixhobo eziphakamileyo.
⑤ Ukonyusa i-Dealectric rhoqo yeBhodi yePCB ingathintela iindawo eziphezulu ezifana nomgca odluliselwa kwiBhodi ukuba isondele ngaphandle; Ukonyusa ubukhulu bebhodi ye-PCB kunye nokunciphisa ubukhulu bomgca we-humicrippia kunokuthintela ucingo lwe-elektromagnetic ukusuka kwi-Deeffied kwaye kuthintele imitha.