Amaxesha amaninzi, imiqobo kunye nemithetho kwi PCB izixhobo zokuyila azisetyenziswanga okanye azisetyenziswa kwaphela. Oku kuhlala kukhokelela kwiimpazamo kuyilo lwebhodi, ezinokuthi zichaphazele indlela ibhodi ehlanganiswe ngayo. Kukho isizathu sokubeka ezi zithintelo ubeko PCB, kwaye oko kukunceda ukuyila iibhodi ngcono. Makhe sijonge ukuba yeyiphi imigaqo yoyilo kunye nemiqobo enokuyenza kuyilo lwakho kunye nendlela yokuyisebenzisa kakuhle.

Iimfuno zemida yoyilo lwePCB

Unyino loyilo lwePCB Ekuqaleni, umyili wePCB unoxanduva lokufumana nokulungisa zonke iimpazamo kuyilo kuyilo. Oku kusebenza kakuhle xa uyila imitya ngesantya se-4x kwitafile ekhanyayo kwaye inokulungiswa yi-Exacto yokusika i-mat. Nangona kunjalo, kwihlabathi lanamhlanje le-multi-layer, uxinano oluphezulu, olunesantya esiphezulu se-PCB, oku akusenani. Unokwazi ukuyikhumbula yonke imithetho eyahlukeneyo, kodwa ukubona ukophula umthetho kungaphaya kwamandla omntu. Ukukhangela kakhulu.

Ngethamsanqa, zonke izixhobo zoyilo ze-PCB kwintengiso namhlanje ziza nenkqubo yemigaqo yoyilo kunye nezithintelo ezakhelwe ngaphakathi. Ngezi nkqubo, kudla ngokuba lula ukuseta iiparamitha zehlabathi, ezinje ngobubanzi bomgca omiselweyo kunye nesithuba, kwaye ngokuxhomekeke kwisixhobo, ungafumana iiSetingi ezihambele phambili ngakumbi. Uninzi lwezixhobo ziya kukuvumela ukuba ubeke imithetho yothungelwano olwahlukeneyo kunye neendidi zenethiwekhi, okanye ukuseta imiqobo ukukunceda uthobele ubuchule boyilo obufana nobude bothungelwano kunye netopology. Izixhobo eziphambili ze-PCB ziyakuba nemithetho kunye nezithintelo onokuzibekela imveliso ethile, uvavanyo kunye neemeko zokulinganisa.

Olunye uncedo lwale migaqo kunye nezithintelo kukuba zihlala ziqwalaselwe kakhulu kuyilo ngalunye, zikunika ukuguquguquka okukhulu. Banokuphinda basetyenziswe kwakhona kuyilo loyilo. Ngokugcina okanye ukuthumela ngaphandle imithetho kunye nezithintelo ngaphandle kwenkqubo yoyilo lwe-PCB ye-CAD, zinokucwangciswa kwaye zigcinwe ngendlela efanayo nokusebenzisa amacandelo ethala leencwadi. Kubalulekile ukuzisebenzisa, kwaye ukwenza njalo, kufuneka wazi ukuba zisetwa njani.

Ungayibeka njani imithetho yoyilo yePCB kunye nezithintelo

Yonke inkqubo ye-CAD yoyilo lwePCB yahlukile, ngoko ke kuya kuba lilize ukunika imizekelo yomyalelo ocacileyo malunga nendlela yokuseta imithetho yoyilo kunye nemiqobo. Nangona kunjalo, singakunika ulwazi olusisiseko lwendlela ezisebenza ngayo ezi nkqubo kunye nendlela yokuzisebenzisa.

Okokuqala, kuhlala kungcono ukuba ufumane ulwazi oluninzi loyilo kangangoko ngaphambi kokuba uqale. Umzekelo, kuya kufuneka uqonde ingqokelela yebhodi. Oku kubalulekile kuyo nayiphi na imiqobo elawulwayo ye-impedance routing ekufuneka imiselwe, njengoko ukongeza, ukususa, okanye ukuhlengahlengisa iileya emva kokuba uyilo luqalisile ngumthwalo onzima. Kuya kufuneka ujonge amaxabiso emigaqo emiselweyo kububanzi kunye nokushiya izithuba, kunye namanye amaxabiso wenethi ethile, umaleko, okanye indawo eyahlukileyo yebhodi. Nazi ezinye iingongoma eziphambili zokumisela imigaqo kunye nemiqobo:

Isikimu: Ngenisa umgaqo omninzi kunye nolwazi olunqobayo kwinkqubo yokubamba ngaphambi kokuba ungene kulwakhiwo kangangoko. Le migaqo idla ngokugqithiselwa xa ungqamanisa iskimu kunye noyilo. Ukuba imigaqo-nkqubo yokuqhuba iskimu kunye nezithintelo, kunye necandelo kunye nolwazi lokunxibelelana, uyilo lwakho luya kulungelelaniswa ngakumbi.

Inyathelo nenyathelo: Xa ufaka imigaqo kwinkqubo ye-CAD, qala ezantsi kuyilo kwaye usebenze ngendlela yakho. Ngamanye amagama, qala ngesitaki somaleko kwaye wakhe imigaqo ukusuka apho. Oku kulula ngakumbi ukuba unemigaqo ethile kunye nemithintelo emiselweyo kwinkqubo yakho yeCAD.

Ukubekwa kwamacandelo: Inkqubo yakho ye-CAD iya kuseta imigaqo eyahlukeneyo kunye nezithintelo kuwe zokubeka iindawo, ezinje ngemida yokuphakama, ukwahlula-hlula phakathi, kunye nokushiyeka kudidi. Seta uninzi lwale migaqo kangangoko unako, kwaye ungalibali ukuyitshintsha ukuze ihambelane neemfuno zakho zokuvelisa. Ukuba imfuno yokuvelisa ineemitha ezingama-25, ukusebenzisa imigaqo yakho ukugcina i-20 mils yokucaca phakathi kwamacandelo yindlela yokufumana intlekele.

Izithintelo zendlela: Unokuseta iingxaki ezininzi zendlela, kubandakanya amaxabiso asisiseko, amaxabiso athile omnatha kunye namaxabiso weklasi omnatha wobubanzi kunye nokushiya izithuba. Unokuseta i-net-to-NET kunye ne-Net class-to-class amaxabiso. Le yimithetho nje. Unako kwakhona ukuqwalasela izithintelo zoyilo zohlobo lwetekhnoloji ofuna ukuyila. Umzekelo, ulawulo lwe-impedance elawulwayo luya kufuna ukuba usete iinethiwekhi ezithile ukuze zihanjiswe kumaleko othile kunye nobubanzi bomgca obumiselweyo.

Eminye imiqobo: Sebenzisa zonke izithintelo ezikhoyo kwinkqubo yoyilo lwe-CAD ye-PCB nanini na kunokwenzeka. Ukuba unezithintelo ungajonga ukucoceka kwescreen, indawo yovavanyo okanye indawo ye-solder phakathi kweepads, zisebenzise. Le mithetho kunye nezithintelo ziya kukunceda ukunqanda iimpazamo kuyilo ebhodini ekufuneka ekugqibeleni ilungiswe kwimveliso.