Ngokuvamile, izithiyo nemithetho ku PCB amathuluzi okuklama asetshenziswa kancane noma awasetshenziswa nhlobo. Lokhu kuvame ukuholela emaphutheni ekwakhiweni kwebhodi, okungase ekugcineni kuthinte indlela ibhodi elihlanganiswe ngayo. Kunesizathu sokubeka le mikhawulo yesakhiwo se-PCB, futhi lokho ukukusiza ukuklama amabhodi angcono. Ake sibheke ukuthi imiphi imithetho yokuklama kanye nemingcele engayenza ekwakhiweni kwakho nokuthi ungayisebenzisa kanjani kangcono.

Izidingo zemikhawulo yesakhiwo se-PCB

Imikhawulo yesakhiwo se-PCB Ekuqaleni, umklami we-PCB unesibopho sokuthola nokulungisa wonke amaphutha edizayini kumklamo. Lokhu kusebenza kahle uma uklama izintambo ngesivinini esingu-4x etafuleni elikhanyayo futhi kungalungiswa i-Exacto inqamule umata. Kodwa-ke, ezweni lanamuhla lezendlalelo eziningi, eliminingi kakhulu, elinesivinini esikhulu se-PCB, lokhu akusanakwenzeka. Ungakwazi ukukhumbula yonke imithetho ehlukene, kodwa ukuthola ukwephulwa ngakunye kungaphezu kwamandla awo wonke umuntu. Ukusesha kakhulu.

Ngenhlanhla, lonke ithuluzi lokuklama le-PCB emakethe namuhla liza nohlelo lwemithetho yesakhiwo kanye nezingqinamba ezakhelwe ngaphakathi. Ngalawa masistimu, ngokuvamile kulula ukusetha imingcele yomhlaba, njengobubanzi bomugqa ozenzakalelayo nesikhala, futhi kuye ngethuluzi, ungathola Izilungiselelo ezithuthuke kakhulu. Amathuluzi amaningi azokuvumela ukuthi ubeke imithetho yamanethiwekhi ahlukene nezigaba zenethiwekhi, noma ubeke izithiyo zokukusiza ukuthi uhambisane namasu okuklama afana nobude benethiwekhi kanye ne-topology. Amathuluzi okuklama e-PCB athuthuke kakhulu azoba nemithetho nezingqinamba ongazibekela ukukhiqiza, ukuhlola, nezimo zokulingisa.

Enye inzuzo yale mithetho nezithiyo ukuthi ngokuvamile ingalungiseka kakhulu kumklamo ngamunye, ikunike ukuguquguquka okukhulu. Angasetshenziswa futhi kusukela ekuklanyweni kuye ekuklanyweni. Ngokulondoloza noma ukuthumela imithetho nezingqinamba ngaphandle kwesistimu ye-CAD yokuklama ye-PCB, ingahlelwa futhi ilondolozwe ngendlela efanayo nokusebenzisa izingxenye zelabhulali. Kubalulekile ukuzisebenzisa, futhi ukwenza kanjalo, kufanele wazi ukuthi zingasethwa kanjani.

Uyisetha kanjani imithetho yokuklama ye-PCB nezithiyo

Lonke uhlelo lwe-PCB lokuklama i-CAD luhlukile, ngakho-ke ngeke kube usizo ukunikeza izibonelo zemiyalo eqondile yokuthi isetha kanjani imithetho yokuklama kanye nemingcele. Kodwa-ke, singakunikeza ulwazi oluyisisekelo lokuthi lezi zinhlelo zokukhawulela zisebenza kanjani nokuthi zisetshenziswa kanjani.

Okokuqala, kuhlala kungcono kakhulu ukuthola ulwazi lwedizayini oluningi ngangokunokwenzeka ngaphambi kokuthi uqale. Isibonelo, uzodinga ukuqonda ukupakishwa kwesendlalelo sebhodi. Lokhu kubalulekile kunoma yiziphi izithiyo zomzila we-impedance olawulwayo okufanele zisethwe, njengokwengeza, ukususa, noma ukulungisa kabusha izendlalelo ngemva kokuthi umklamo usuqalile kuwumthwalo osindayo. Udinga futhi ukubheka amanani emithetho emisiwe obubanzi nesikhala, kanye nanoma imaphi amanye amanani enetha ethile, ungqimba, noma indawo eyingqayizivele yebhodi. Nawa amaphuzu abalulekile okusetha imithetho nemingcele:

I-Schematic: Faka imininingwane eminingi yomthetho kanye nesithiyo kusistimu yokuthwebula isikimu ngaphambi kokufaka isakhiwo ngangokunokwenzeka. Le mithetho ivamise ukudluliselwa uma uvumelanisa isikimu nesakhiwo. Uma ama-schematics eshayela imithetho nezithiyo, kanye nengxenye nolwazi lokuxhumana, umklamo wakho uzohleleka kakhulu.

Isinyathelo ngesinyathelo: Uma ufaka imithetho ohlelweni lwe-CAD, qala ngezansi komklamo bese ukhuphuka. Ngamanye amazwi, qala ngesitaki sesendlalelo futhi wakhe imithetho ukusuka lapho. Lokhu kulula kakhulu uma unemithetho ethile kanye nezingqinamba ezilungiselelwe ohlelweni lwakho lwe-CAD.

Ukubekwa kwengxenye: Uhlelo lwakho lwe-CAD luzosetha imithetho nemikhawulo ehlukene yokuthi ubeke izingxenye, ezifana nemikhawulo yobude, isikhala sengxenye nengxenye, kanye nesikhala sengxenye nesigaba. Misa le mithetho eminingi ngangokunokwenzeka, futhi ungakhohlwa ukuyishintsha ukuze ihambisane nezidingo zakho zokukhiqiza. Uma isidingo sokukhiqiza singama-25 mils, khona-ke ukusebenzisa imithetho yakho ukugcina i-20 mils yemvume phakathi kwezingxenye kuyindlela yokugwema inhlekelele.

Izithiyo zomzila: Ungasetha izithiyo zomzila eziningi, okuhlanganisa amanani azenzakalelayo, amanani engqikithi yengqikithi namanani engqikithi yeklasi yobubanzi nesikhala. Ungakwazi futhi ukusetha amanani we-net-to-NET kanye ne-Net class-to-class. Lena imithetho nje. Ungaphinda ulungiselele imikhawulo yedizayini yohlobo lobuchwepheshe ofuna ukubuklama. Isibonelo, ikhebula ye-impedance elawulwayo ingadinga ukuthi usethe amanethiwekhi athile ukuze ahanjiswe kungqimba oluthile olunobubanzi bomugqa onqunywe kusengaphambili.

Ezinye izithiyo: Sebenzisa zonke izithiyo ezitholakalayo ohlelweni lwe-PCB design CAD noma nini lapho kunokwenzeka. Uma unezingqinamba ungabheka imvume yesikrini, isikhala sephoyinti lokuhlola noma umucu we-solder phakathi kwamaphedi, uwasebenzise. Le mithetho nemikhawulo izokusiza ukuthi ugweme amaphutha omklamo ebhodini okufanele ekugcineni alungiswe ukuze akhiqize.