01
Ungayibona kanjani inombolo yezendlalelo ze-PCB
Njengoba izingqimba ezahlukahlukene kwi-PCB zihlanganiswe ngokuqinile, ngokuvamile akukulula ukubona inombolo yangempela, kepha uma ubheka ngokucophelela iphutha leBhodi, usengahlukanisa.
Ngokucophelela, sizothola ukuthi kunezendlalelo esisodwa noma eziningana zezinto ezimhlophe maphakathi ne-PCB. Eqinisweni, lokhu kungqimba okufakwayo phakathi kwezendlalelo ukuqinisekisa ukuthi ngeke kube nezinkinga zesifunda ezimfushane phakathi kwezendlalelo ze-PCB ezahlukahlukene.
Kuyaqondakala ukuthi amabhodi we-PCB akhethekile ahlukahlukene asebenzisa amabhodi amaningi e-wiring angashadile noma ahlangane kabili, bese ungqimba lokufaka i-infaulating lubekwe phakathi kwesendlalelo ngalunye bese licindezelwa ndawonye. Inani lezendlalelo zebhodi le-PCB limelela ukuthi zingakanani izingqimba. Ungqimba oluzimele lwe-wiring, kanye nongqimba olufakayo phakathi kwezendlalelo seluyindlela enembile kithi ukwahlulela inani lezendlalelo se-PCB.
Indlela yomhlahlandlela Hole isebenzisa "Umhlahlandlela Hole" ku-PCB ukukhomba inani lezendlalelo se-PCB. Umgomo ikakhulukazi wenza ngokwezobuchwepheshe nge-Via Technology esetshenziswe ekuxhumekeni kwesekethe kwe-PCB ye-multilayer. Uma sifuna ukubona ukuthi zingaki izingqimba i-PCB enazo, singahlukanisa ngokubheka izimbobo ze-Via.Ukuthi izintambo zigxile kolunye uhlangothi, futhi izintambo zigxile ngakolunye uhlangothi, ngakho-ke izintambo zigxile kolunye uhlangothi, ngakho-ke izintambo zigxile kolunye uhlangothi, ngakho-ke izintambo zigxile ebhodini ziye kolunye uhlangothi, ngakho-ke izintambo zingena kwi-PCB Ibhodi, ngakho-ke siyabona ukuthi izikhonkwane zezingxenye zithengiswe ngakolunye uhlangothi.
Isibonelo, uma ibhodi lisebenzisa ibhodi elingu-4, udinga ukulandela izintambo ezingxenyeni zokuqala nezesine (ungqimba lwesiginali). Ezinye izingqimba zinokunye ukusetshenziswa (ungqimba lomhlabathi kanye nesendlalelo samandla). Beka ungqimba lwesiginali engxenyeni yamandla kanye nenhloso yezinhlangothi zombili ze-Ground Layer ukuvikela ukuphazamiseka nokwenziwa lula ukulungiswa komugqa wesiginali.
Uma ezinye izimbobo zekhadi lebhodi zivela ohlangothini lwangaphambili lwebhodi le-PCB kepha zingatholakali ohlangothini lwasemuva, i-EDA365 Electronics Foramu ikholelwa ukuthi kufanele ibe yibhodi engu-6/8-ungqimba. Uma okufanayo ngezimbobo zitholakala ezinhlangothini zombili ze-PCB, ngokwemvelo kuzoba yibhodi elingqimba elingu-4.
Kodwa-ke, abakhiqizi bamakhadi amaningi ebhodi njengamanje basebenzisa enye indlela yokuzithandela, okuwukuxhuma kuphela eminye yemigqa, futhi isebenzise i-vias vias ne-vias eyimpumputhe emzileni. Izimbobo ezingaboni ukuxhuma izingqimba eziningana ze-PCB yangaphakathi kwi-PCB engaphezulu ngaphandle kokungena kulo lonke ibhodi yesekethe.
Ukungcwatshwa kwe-vias kuxhuma kuphela kwi-PCB yangaphakathi, ngakho-ke azibonakali ebusweni. Njengoba umgodi oyimpumputhe awudingi ukungena kwi-PCB yonke, uma kungezendlalelo eziyisithupha noma ngaphezulu, bheka iBhodi elibheke emthonjeni wokukhanya, futhi ukukhanya ngeke kudlule. Ngakho-ke kwakukhona izwi elithandwa kakhulu ngaphambili
Kunezizathu zale ndlela, kepha akusebenzi. Iforamu ye-elekthronikhi ye-EDA365 ikholelwa ukuthi le ndlela ingasetshenziswa kuphela njengendlela yesethenjwa.
03
Indlela yokuqongelela
Ukuze uqonde, le akuyona indlela, kepha isipiliyoni. Kepha yilokhu esicabanga ukuthi kunembile. Singahlulela inani lezendlalelo se-PCB ngokusebenzisa iminonjana yamabhodi athile omphakathi kanye nesikhundla sezakhi. Ngoba embonini ye-Hardware yamanje eshintsha ngokushesha okukhulu, akunabakhiqizi abaningi abakwazi ukuhlela kabusha ama-PCB.
Isibonelo, eminyakeni embalwa edlule, inani elikhulu lamakhadi wehluzo angama-9550 aklanywe ngama-PCB angqimba ayi-6. Uma uqaphela, ungaqhathanisa ukuthi kuhluke kanjani kusuka ku-9600PRO noma 9600xxt. Vele ushiye ezinye izinto, futhi ugcine ukuphakama okufanayo kwi-PCB.
Ngeminyaka yango-1990 yekhulu leminyaka elidlule, kwakukhona inkulumo ebanzi ngaleso sikhathi: inani lezendlalelo sePCB lingabonakala ngokubeka i-PCB iqonde, futhi abantu abaningi bakukholwa. Lesi sitatimende kamuva saba yize sibe yize. Noma ngabe inqubo yokukhiqiza ngaleso sikhathi yayibuyela emuva, iso lingakwazi kanjani ukulitshela kude kunezinwele ezincanyana kunezinwele?
Kamuva, le ndlela yaqhubeka futhi yaguqulwa, futhi kancane kancane kwavela enye indlela yokulinganisa. Kulezi zinsuku, abantu abaningi bakholelwa ukuthi kungenzeka ukukala inani lezendlalelo se-PCB ngokunemba lokulinganisa amathuluzi afana ne- "vernier calipers", futhi asivumelani nalesi sitatimende.
Akunandaba ukuthi ngabe lukhona lolu hlobo lwensimbi yokunemba, kungani singaboni ukuthi i-PCB enobuqili engu-12 ubude be-PCB eyi-4-ungqimba? Iforamu ye-Eda365 Electronics ikhumbuza wonke umuntu ukuthi ama-PC ehlukene azosebenzisa izinqubo zokukhiqiza ezahlukahlukene. Alikho indinganiso efanayo yokulinganisa. Ungahlulela kanjani inani lezingqimba ezisuselwa ekukhulumeni?
Eqinisweni, inani lezendlalelo se-PCB linethonya elikhulu ebhodini. Isibonelo, kungani udinga okungenani izingqimba ezi-6 ze-PCB ukufaka i-CPU eyi-Dual? Ngenxa yalokhu, i-PCB ingaba nezendlalelo ezi-3 noma ezi-4, ungqimba oluyi-1 lomhlabathi, kanye nezingqimba zamandla ezi-1 noma ezi-2. Ngemuva kwalokho imigqa yesiginali ingahlukaniswa ngokwanele ukunciphisa ukuphazamiseka kokuhlangana, futhi kunokuhlinzekwa ngokwanele kwamanje.
Kodwa-ke, ukwakheka kwe-PCB enobungqingili kukwanela ngokuphelele amabhodi ajwayelekile, kanti i-PCB enobuqili ibiza kakhulu futhi ayinayo intuthuko eminingi yokusebenza.