PCB umbono woyilo lwemodyuli

Ebusweni beemveliso ze-elektroniki kunye namaqonga adibeneyo e-hardware kunye neenkqubo eziyinkimbinkimbi ngakumbi nangakumbi, ukucinga ngemodyuli kufuneka kwamkelwe kwi-PCB layout. Iimodyuli kunye neendlela zoyilo ezicwangcisiweyo kufuneka zisetyenziswe kuzo zombini i-hardware schematic design kunye ne-PCB wiring. Njengenjineli yehardware, kwisiseko sokuqonda ulwakhiwo lwenkqubo iyonke, kufuneka aqale ngokuqonda adibanise imbono yoyilo lwemodyuli kumzobo weskimu kunye noyilo lweengcingo zePCB, kwaye acwangcise umbono osisiseko woyilo lwePCB ngokweyona meko yePCB.

Imodyuli yePCB yoyilo loyilo lwemodyuli isishwankathelo soyilo

Ukubekwa kwezinto ezisisigxina

Ukubekwa kwamacandelo aqingqiweyo kufana nokubekwa kwemingxuma esisigxina, kwaye iphinda ihlawule ingqalelo kwindawo echanekileyo. Oku kubekwa ikakhulu ngokwesakhiwo soyilo. Iziko kunye nokugqithisa i-silkscreens yamacandelo kunye nezakhiwo, njengoko kuboniswe kwi-Figure 9-6. Emva kokuba izinto ezimiselweyo ebhodini zibekwe, isalathiso sokuhamba komqondiso webhodi yonke inokudityaniswa ngokomgaqo wokusondela kwemigca ephaphazelayo kunye nomgaqo wokubaluleka komqondiso.

Idayagram ecwangcisiweyo kunye nezicwangciso zokusebenzisana zePCB

Ukuze kube lula ukukhangelwa kwamacandelo, umzobo weskimu kunye nePCB kufuneka zihambelane, ukuze ezi zimbini zikwazi ukwenza imephu enye nenye, ekubhekiswa kuyo njengentsebenziswano. Ngokusebenzisa i-interactive layout, amacandelo anokubekwa ngokukhawuleza, ngaloo ndlela ukunciphisa ixesha loyilo kunye nokuphucula ukusebenza kakuhle.

(1) Ukuze kuphunyezwe unxibelelwano phakathi komzobo weskim kunye nePCB ngababini, kuyafuneka ukuba kuphunyezwe umyalelo wemenyu “imowudi yokukhetha uMnqamlezo wesixhobo” kuzo zombini ezi ndlela zokuhlela umzobo weskimu kunye nojongano loyilo lwePCB ukuze kusebenze imowudi yokukhetha enqamlezayo, njengoko. iboniswe kuMfanekiso 9-7.

(2) Njengoko kubonisiwe kwi-FIG. I-9-8, kunokubonwa ukuba emva kokuba icandelo likhethiwe kumzobo wesikimu, icandelo elihambelanayo kwi-PCB liya kukhethwa ngokuhambelanayo; Ngokuchaseneyo, xa icandelo likhethiwe kwi-PCB, icandelo elihambelanayo kwi-schematic nalo liyakhethwa.

Imodyuli yePCB yoyilo loyilo lwemodyuli isishwankathelo soyilo

Uyilo lweemodyuli

Eli phepha lazisa umsebenzi wolungelelwaniso lwecandelo, oko kukuthi, ukucwangciswa kwamacandelo kwindawo yoxande, enokuthi kudityaniswe nentsebenziswano yamacandelo kwinqanaba lokuqala loyilo ukuze kube lula ukwahlula iqela lamacandelo esiphithiphithi ngeemodyuli kunye nendawo. kwindawo ethile.

(1) Khetha onke amacandelo emodyuli enye kumzobo weskim, emva koko amacandelo ahambelana nomzobo weskim kwiPCB aya kukhethwa.

(2) Yenza umyalelo wemenyu “Izixhobo-Izixhobo-uLungiselelo kwindawo yoxande”.

(3) Khetha uluhlu kwindawo engenanto kwi-PCB, emva koko amacandelo emodyuli yomsebenzi aya kulungelelaniswa kuluhlu olukhethiweyo lwebhokisi, njengoko kubonisiwe kuMfanekiso 9-9. Ngalo msebenzi, zonke iimodyuli ezisebenzayo kumzobo weskimu zinokuhlulwa zibe ziibhloko ngokukhawuleza.

Uyilo lwemodyuli kunye noyilo olusebenzayo luhamba kunye. Usebenzisa uyilo olusebenzisanayo, khetha onke amacandelo emodyuli kumzobo weskimu kwaye uwalungelelanise nganye nganye kwiPCB. Emva koko, unokucokisa ngakumbi uyilo lwe-IC, isixhasi kunye nediode. Olu luyilo lwemodyuli, njengoko kubonisiwe kuMfanekiso 9-10.

Kubeko lwemodyuli, ungaqhuba umyalelo weSahlulo esithe nkqo ukwahlula ujongano lokuhlela lwedayagramu ecwangcisiweyo kunye nojongano loyilo lwePCB, njengoko kubonisiwe kuMfanekiso 9-11, uyilo olukhawulezayo ngokujonga iimboniselo.