PCB umbono wesakhiwo se-modular

Ebusweni bemikhiqizo ye-elekthronikhi enamapulatifomu ezingxenyekazi zekhompiyutha ahlanganisiwe ngokwengeziwe kanye nezinhlelo eziningi eziyinkimbinkimbi, ukucabanga kwemodular kufanele kwamukelwe ukwakheka kwe-PCB. Izindlela zokuklama ezimodulayo nezihlelekile kufanele zisetshenziswe kukho kokubili ukwakheka kwesikimu sehadiwe kanye nezintambo ze-PCB. Njengonjiniyela wezingxenyekazi zekhompiyutha, esimisweni sokuqonda lonke uhlelo lwezakhiwo, kufanele aqale ngokuqaphela ahlanganise umqondo wokuklama oyimojuli kumdwebo wohlelo kanye nomklamo wezintambo we-PCB, futhi ahlele umbono oyisisekelo wokwakheka kwe-PCB ngokwesimo sangempela se-PCB.

Imojula ye-PCB yokubuka uhlolojikelele lwesakhiwo se-modular

Ukubekwa kwezinto ezingaguquki

Ukubekwa kwezingxenye ezilungisiwe kufana nokubekwa kwezimbobo ezingaguquki, futhi futhi kunaka indawo eqondile. Lokhu kubekwa ngokuyinhloko ngokusho kwesakhiwo sokuklama. Faka phakathi futhi udlulele izikrini zikasilika zezingxenye nezakhiwo, njengoba kukhonjisiwe kuMfanekiso 9-6. Ngemuva kokuthi izakhi ezihleliwe ebhodini zibekwe, isiqondiso sokugeleza kwesignali yebhodi lonke singahlanganiswa ngokuvumelana nesimiso sokusondela kwemigqa endizayo kanye nesimiso sokubeka kuqala isignali.

Umdwebo wohlelo kanye nezilungiselelo zokusebenzisana ze-PCB

Ukuze kube lula ukuseshwa kwezingxenye, umdwebo wohlelo kanye ne-PCB kumele zihambisane, ukuze lezi ezimbili zikwazi ukukhombana, okubizwa ngokuthi ukusebenzisana. Ngokusebenzisa ukwakheka okusebenzisanayo, izingxenye zingabekwa ngokushesha, ngaleyo ndlela kuncishiswe isikhathi sokuklama futhi kuthuthukiswe ukusebenza kahle komsebenzi.

(1) Ukuze kuzuzwe ukusebenzisana phakathi komdwebo wohlelo ne-PCB ngamabili, kuyadingeka ukuthi kusetshenziswe umyalo wemenyu othi “Imodi yokukhetha Yesiphambano Sethuluzi” kukho kokubili isixhumi esibonakalayo sokuhlela umdwebo nesixhumi esibonakalayo somklamo we-PCB ukuze uvule imodi yokukhetha enqamulayo, njengoba kuboniswe kuMfanekiso 9-7.

(2) Njengoba kuboniswe ku-FIG. 9-8, kungabonakala ukuthi ngemva kokukhethwa kwengxenye kumdwebo wohlelo, ingxenye ehambisanayo ku-PCB izokhethwa ngokuhambisanayo; Ngokuphambene, uma ingxenye ikhethiwe ku-PCB, ingxenye ehambisanayo kuhlelo nayo iyakhethwa.

Imojula ye-PCB yokubuka uhlolojikelele lwesakhiwo se-modular

Isakhiwo se-Modular

Leli phepha lethula umsebenzi wokuhlelwa kwengxenye, okungukuthi, ukuhlelwa kwezingxenye endaweni engunxande, engahlanganiswa nokusebenzelana kwezingxenye esigabeni sokuqala sokwakheka ukuze kuhlukaniseke kalula inqwaba yezingxenye ezinesiphithiphithi ngamamojula nendawo. endaweni ethile.

(1) Khetha zonke izingxenye zemojuli eyodwa kumdwebo wohlelo, bese kukhethwa izingxenye ezihambisana nomdwebo wohlelo ku-PCB.

(2) Yenza umyalo wemenyu othi “Amathuluzi-Amadivayisi-Uhlelo endaweni engunxande”.

(3) Khetha ububanzi endaweni engenalutho ku-PCB, bese izingxenye zemojula yokusebenza zizohlelwa ebangeni elikhethiwe lebhokisi, njengoba kuboniswe kuMfanekiso 9-9. Ngalo msebenzi, wonke amamojula asebenzayo kumdwebo wohlelo angahlukaniswa ngamabhulokhi ngokushesha.

Isakhiwo semojuli kanye nesakhiwo esisebenzisanayo kuyahambisana. Usebenzisa isakhiwo esisebenzisanayo, khetha zonke izingxenye zemojula kumdwebo wohlelo futhi uzihlele ngayinye ngayinye ku-PCB. Ngemuva kwalokho, ungaqhubeka nokucwenga ukwakheka kwe-IC, i-resistor ne-diode. Lesi yisakhiwo se-modular, njengoba kukhonjisiwe kuMfanekiso 9-10.

Kusakhiwo se-modular, ungasebenzisa umyalo we-Vertical Partition ukuze uhlukanise isixhumi esibonakalayo sokuhlela umdwebo ne-PCB design interface, njengoba kuboniswe kuMfanekiso 9-11, ukuze uthole isakhiwo esisheshayo ngokubuka ukubuka.