Kwinkqubo ye PCB Uyilo, kuba ulwahlulo lwenqwelomoya, lunokukhokelela kwireferensi yenqwelomoya yomqondiso wokuyekiswa, wesiginali ephantsi, ayinakuba nanto yakwenza, kwiinkqubo zedijithali ezihamba rhoqo, umqondiso wokuhamba rhoqo kwindiza ekubhekiswa kuyo kwindlela yokubuyela, eyindlela yokuhamba , ukuba ireferensi ᒣ ukupheliswa komphezulu, umqondiso kunqumlo, oku kuzakuzisa iingxaki ezininzi, Njenge-EMI, i-crosstalk kunye nezinye iingxaki. Kule meko, ulwahlulo kufuneka luthungelwe ukubonelela ngendlela emfutshane yokubuyela umva komqondiso. Iindlela eziqhelekileyo zokulungisa zibandakanya ukongeza amandla okuthunga kunye nebhulorho:

A. Ukutshixa amandla ac

Ngokwesiqhelo, i-0402 okanye i-0603 i-ceramic capacitor ibekwa kulwahlulo lomqondiso, kwaye amandla e-capacitor yi-0.01uF okanye i-0.1uF. Ukuba isithuba siyavuma, kungongezwa ezinye ii-capacitors several. Okwangoku, zama ukuqinisekisa ukuba umgca wesiginali ungaphakathi kokuthunga amandla kwe-200mil. Umncinci umgama kukuba, ungcono ˗ kwaye iinethiwekhi kuzo zombini iziphelo ze-capacitor zihambelana nothungelwano lwenqwelomoya yenqwelomoya apho kudlula khona umqondiso. Jonga uthungelwano oluqhagamshelwe kwiziphelo zombini ze-capacitor kuMzobo 1, kunye neenethiwekhi ezimbini ezahlukeneyo eziqaqanjiswe ngemibala emibini:

Uyenza njani ibhodi yePCB ezinzileyo

B. Ibhulorho engaphezulu ˖

Okuqhelekileyo “ngumqondiso wepakethe yenkqubo yomhlaba” kumaleko wesiginali kuwo onke amacandelo, isenokuba yipakethi yolunye uphawu lwenethiwekhi, le “pakethi yomhlaba” ingqindilili ngangokunokwenzeka, le ndlela yokulungisa, bhekisa kulomfanekiso ulandelayo

Uyenza njani ibhodi yePCB ezinzileyo

Nantsi inkcazo eyongezelelweyo yesizukulwana esiqhelekileyo sokwahlulahlula umnqamlezo ˖

1. Eli candelo lilandelayo ˖ kwibhodi enye, kunokubakho umbane omninzi wokuqhubekeka, kunye nenani lezixhobo zombane phantsi kwenani eliqingqiweyo; Emva kokuqwalaselwa ngokubanzi, kwafuneka sisebenze kwinqwelo-moya enamandla. Ngamanye amaxesha inokuba ikhefu elicocekileyo nelicocekileyo ˗ kwaye ngamanye amaxesha alunakuphepha unxibelelwano olumiyo, kwaye inokuncama kuphela umqondiso ongabalulekanga kangako, kodwa kufuneka ulungiswe. Olu luvo lufana nokuya ekhaya, ngequbuliso wemba umsele, le yingxaki, ukuwujikeleza, umgama omncinci, unokuleqwa yinja yomntu; Ewe,

Yenza nje ibhulorho, okanye ungagoduka.

Ke, ngaphandle kwesikweko sasendle, ukuba wenza ulwahlulo kwi-PCB, emva koko

Jonga umgca womqondiso, okanye kunokwenzeka into.

2. Le meko ingasentla akukho lula ukuyibetha ngoyaba, kwaye kukho enye imeko enokungahoywa. Ukuba i-VIA ixinene kakhulu, ikhokelela ekusikeni kwenqwelomoya, emva kwayo yonke loo nto, enye indawo ikwahlalwa sisithuba, ngaphezulu kuya kunika oku kulandelayo ukuba kuhlale, kukhokelela ‘ekunqunyulweni, le meko ayichazwanga apha, efanelekileyo intshayelelo ingaphezulu. Kule meko, kuya kufuneka usete imigaqo elungileyo kwinqanaba lokuqala kwaye ujonge kubo ngononophelo kwinqanaba elilandelayo.

Iwotshi, ukuseta kwakhona, imiqondiso ngaphezulu kwe-100M kwaye ezinye iimpawu zebhasi eziphambili azinokwahlulwa. Kukho ubuncinci inqwelomoya enye, ngakumbi inqwelomoya ye-GND.

Umqondiso wewotshi, umqondiso wesantya esiphezulu kunye nesiginali ebuthathaka enqabela ukwahlulahlula umnqamlezo;

Imiqondiso eyahlukileyo kufuneka ilungelelaniswe emhlabeni ukunqanda ulwahlulo lomgca omnye. (Amacandelo eminqamlezo othe nkqo kangangoko kunokwenzeka)

Uyenza njani ibhodi yePCB ezinzileyo

Indlela yokubuya rhoqo yokuhamba kwayo yonke imiqondiso ibekwe ngqo ngezantsi komgca wesiginali wendawo ekufuphi. Imfezeko yesiginali kunye nemiba yexesha inokuncitshiswa ngokubeka umaleko oqinileyo phantsi komqondiso obonelela ngokuthe ngqo kumqondiso. I-capacitor yesekethe ye-0.01uF kufuneka isetyenziswe xa ukwahlula kunye ne-crossover phakathi kwe-wiring kunye nongqimba kungenakuphepheka. Xa kusetyenziswa ii-loop capacitors, kufuneka zibekwe kufutshane kangangoko kunqumlo lomgca wesiginali kunye nokwahlulahlula umaleko.