The PCB yakagadzirwa naAustria Paul Eisler, uyo akatanga kuunza akadhindwa emabhodhi ematunhu kunhepfenyuro muna 1936. Muna 1943, Tekinoroji iyi yakagamuchirwa kuti ishandiswe muchiuto muUnited States, uye muna 1948, kugadzirwa kwakagamuchirwa zviri pamutemo kuti ishandiswe muUnited States. Kubva pakati pema1950, akadhindwa ematunhu emabhodhi ave achishandiswa zvakanyanya.

Pcb inowanikwa kwese kwese, inoshandiswa zvakanyanya mukutaurirana, zvekurapa, kutonga kwemaindasitiri, mota, zvemauto, zvekubhururuka, muchadenga, mutengi nemamwe maindasitiri. Mune ese marudzi emagetsi zvigadzirwa, PCB, sechinhu chikuru chezvinhu zvechigadzirwa Hardware, inoita basa rinokosha.

Nei PCBS yakasvibira?

Kana iwe ukangwarira, unogona kuona kuti mazhinji maPCB akasvibira (nhema, bhuruu, tsvuku uye mamwe mavara mashoma), nei izvi? Chaizvoizvo, iro redunhu bhodhi pacharo rakasviba. Ruvara rwegirinhi rwatinoona ndeye mask solder. Solder resistance layer haizi yegreen, pane matsvuku, yero, bhuruu, pepuru, dema zvichingodaro, asi girini ndiyo yakajairika.

Nezve nei uchishandisa green green solder layer, pane zvinonyanya zvinotevera:

1) Girini haina kunyanyisa kukurudzira kumeso. Kubva paudiki, mudzidzisi akatiudza kuti girini yakanaka kumeso, inodzivirira maziso uye kurwisa kuneta. Vagadziri uye vashandi vekugadzirisa hazvisi nyore kuneta kwemaziso kana uchinge wakatarisana nePCBboard kwenguva yakareba, izvo zvinokonzeresa kukuvara kwemaziso kushoma.

2) Mari yakaderera. Nekuti mukuita kwekugadzira, girini ndiyo inowanikwa, huwandu hwekutenga hwependi yakasvibirira yepasi ichave hombe, mutengo wekutenga wependi yakasvibirira unenge wakaderera kupfuura mamwe mavara. Panguva imwechete apo kugadzirwa kwemazhinji uchishandisa iwo iwo pendi pendi kunogona zvakare kudzikisa mutengo wewaya inoshanduka.

3) Kana iro bhodhi rakasungirirwa paSMT, rinofanira kupfuura nematare uye zvidimbu zvemberi uye yekupedzisira ongororo yeAOI. Maitiro aya anofanirwa kuverengerwa nekumira kwemaziso, uye iko kuzivikanwa kwechiridzwa kuri nani kana paine girini kumashure.

Pcb yakagadzirirwa sei?

Kugadzira pcb, marongerwo ePBB anofanira kugadzirwa kutanga. Pcb dhizaini inoda kuvimba neEDA dhizaini software zvishandiso uye mapuratifomu, akadai seCadence Allegro, Mentor EE, Mentor Mapedhi, Altium Designer, Protel, nezvimwe. Parizvino, nekuda kwekuenderera miniaturization, kunyatsoita uye kumhanyisa zvigadzirwa zvemagetsi, pcb dhizaini haingodi chete kupedzisa kubatana kwedunhu kwezvinhu zvakasiyana, asi zvakare inofanirwa kufunga nezvematambudziko akasiyana akaunzwa nekumhanya nekukwirisa.

Iyo yekutanga maitiro ePCB dhizaini ndeinotevera: yekutanga gadziriro → pcb dhizaini dhizaini

Ndeapi machena mitsara paPCB?

Isu tinowanzoona mitsetse chena paPCBS. Wakambozvibvunza here kuti ndezvipi? Iyi mitsara chena inoshandiswa kunyora zvinhu uye kupurinda ruzivo rwakakosha rwePCB pabhodhi, inonzi “screen printing.” Inogona kuve-skrini-yakadhindwa pabhodhi kana yakadhindwa paPCB uchishandisa inkjet purinda.

Ndezvipi zvinhu zviri pcb?

Kune akawanda akasarudzika zvikamu paPCB, imwe neimwe iine rakasiyana basa, iro pamwe chete rinoumba iro basa rePCB. Zvikamu zvePCB zvinosanganisira resistors, potentiometers, capacitors, inductors, relays, mabhatiri, fuses, ma transformer, diode, transistors, LED, switch, nezvimwe.

Pane chero waya paPCB?

Kune kutanga, PCBS hainyatsoshandisa waya kubatana. Izvi zvinonakidza nekuti midziyo yemagetsi yakawanda uye tekinoroji inoda waya kuti dzibatanidze. Iko hakuna waya muPCB, asi waya yemhangura inoshandiswa kutungamira zvazvino mukati mechinhu uye kubatanidza zvese zvikamu.