PCB uyilo lubhekisa kuyilo lwebhodi yesekethe. Uyilo lwebhodi yesekethe lusekwe kumzobo wesikimu sesekethe ukuqonda imisebenzi efunwa ngumyili wesekethe. Uyilo lwebhodi yesekethe eprintiweyo ubukhulu becala ibhekisa kuyilo loyilo, ekufuneka luthathele ingqalelo imiba eyahlukeneyo efana noyilo loqhagamshelo lwangaphandle, uyilo oluphuculweyo lwamalungu angaphakathi e-elektroniki, uyilo oluphuculweyo loqhagamshelo lwesinyithi kunye nemingxuma, kunye nokutshatyalaliswa kobushushu. Uyilo loyilo kufuneka luphunyezwe ngoncedo loyilo oluncediswa yikhompyuter (CAD). Uyilo olugqwesileyo loyilo lunokugcina iindleko zemveliso kwaye lufezekise ukusebenza kakuhle kwesekethe kunye nokusebenza kokushisa ubushushu.

Emva kokugqitywa koyilo lwe-wiring, kuyimfuneko ukujonga ngononophelo ukuba i-wiring design idibana nemithetho ebekwe ngumyili, kwaye kwangaxeshanye, kuyafuneka ukuba kuqinisekiswe ukuba imigaqo ebekiweyo iyahlangabezana neemfuno zenkqubo yokuvelisa ibhodi eprintiweyo. . Uhlolo jikelele lunemiba ilandelayo:

1. Nokuba umgama phakathi komgca kunye nomgca, umgca kunye nephedi yecandelo, umgca kunye nomngxuma wokudlula, icandelo lecandelo kunye nomngxuma wokudlula, umngxuma odlulayo kunye nomngxuma wokudlula ufanelekile, kwaye ingaba iyadibana nemveliso. iimfuno.

2. Ngaba ububanzi bomgca wamandla kunye nomgca osezantsi bufanelekile, kwaye kukho ukudibanisa okuqinileyo phakathi komgca wamandla kunye nomgca ophantsi (i-low wave impedance)? Ingaba ikhona indawo kwiPCB apho ucingo olusezantsi lunokwandiswa?

3. Ingaba amanyathelo angcono athathiweyo kwimigca yeempawu eziphambili, njengobude obufutshane, umgca wokukhusela wongezwa, kwaye umgca wokungena kunye nomgca wokuphuma uhlukaniswe ngokucacileyo.

4. Ingaba kukho iingcingo zomhlaba ezahlukeneyo zesekethe ye-analog kunye nenxalenye yesekethe yedijithali.

5. Ingaba iigrafiki ezongeziweyo kwi-PCB ziya kubangela i-signal short circuit.

6. Lungisa ezinye iimilo zomgca ezingonelisiyo.

7. Ingaba kukho umgca wenkqubo kwi-PCB? Ingaba i-mask ye-solder iyahlangabezana neemfuno zenkqubo yokuvelisa, nokuba isayizi ye-mask ye-solder ifanelekile, kunye nokuba ilogo yomlinganiswa icinezelwe kwiphedi yesixhobo, ukuze ingachaphazeli umgangatho wesixhobo sombane.

8. Ingaba umphetho wesakhelo sangaphandle somgangatho womhlaba wamandla kwibhodi ye-multilayer iyancitshiswa, njenge-foil yobhedu yomgangatho womhlaba wamandla ovezwe ngaphandle kwebhodi, enokubangela isiphaluka esifutshane.

Kuyilo lwesantya esiphezulu, i-impedance yeempawu zeebhodi ze-impedance ezilawulwayo kunye nemigca yenye yeengxaki ezibalulekileyo kunye neziqhelekileyo. Okokuqala qonda inkcazo yomgca wothumelo: umgca wothumelo uqulunqwe ngabaqhubi ababini abanobude obuthile, omnye umqhubi usetyenziselwa ukuthumela iimpawu, kwaye enye isetyenziselwa ukufumana iimpawu (khumbula ingcamango ye “loop” endaweni “yomhlaba”. ”) kwibhodi ye-multilayer, Umgca ngamnye uyinxalenye yomgca wothumelo, kwaye indiza yesalathiso ekufutshane ingasetyenziswa njengomgca wesibini okanye i-loop. Isitshixo sokuba umgca ube ngumgca wothumelo “wokusebenza kakuhle” kukugcina i-impedance yeempawu zayo zingaguquguquki kuwo wonke umgca.