Zvichitaurwa zviri nyore, PCB isina chinhu inoreva yakadhindwa redunhu bhodhi isina chero kuburikidza nemakomba kana zvemagetsi zvikamu. Ivo vanowanzo nzi maPCB asina chinhu uye dzimwe nguva anonziwo maPCB. Iyo isina chinhu PCB bhodhi ine chete nzira dzekutanga, mapatani, simbi yekubikira uye PCB substrate.

Chii chiri kushandiswa kweakashama PCB board?
Iyo PCB isina chinhu ndiyo skeleton yedare redunhu redunhu. Inotungamira zvazvino uye zvazvino kuburikidza nemakwara akakodzera uye inoshandiswa mumakomputa mazhinji emagetsi emagetsi.

Kureruka kwePCB isina chinhu kunopa mainjiniya nevagadziri vane rusununguko rwakakwana rwekuwedzera zvikamu sezvinodiwa. Iri bhodhi risina chinhu rinopa kushanduka uye rinogonesa kugadzirwa kwehuwandu.

Iri bhodhi rePCB rinoda basa rekugadzira rakawanda kupfuura dzimwe nzira dzekuisa waya, asi kazhinji rinogona kuve otomatiki mushure mekusangana nekugadzira. Izvi zvinoita kuti mabhodhi ePCB ave sarudzo yakachipa uye inoshanda zvakanyanya.

Iyo bhodhi isina chinhu inobatsira chete mushure mekuwedzera zvikamu. Chinangwa chekupedzisira chePCB isina chinhu ndechekuita bhodhi rakazara redunhu. Kana ichienderana neakakodzera zvikamu, ichava nekushandisa kwakawanda.

Nekudaro, uku hakusi iko kwega kushandiswa kwemabhodhi ePCB asina chinhu. Blank PCB ndiyo nhanho yakanakisa yekuita isina bhodhi yekuongorora mune redunhu bhodhi kugadzira maitiro. Zvakakosha kudzivirira matambudziko mazhinji anogona kuitika mune ramangwana.
Sei vasina bhodhi bvunzo?
Pane zvikonzero zvakawanda zvekuyedza mabhodhi asina chinhu. Sezvo redunhu bhodhi furemu, PCB bhodhi kutadza mushure mekugadzwa kuchakonzera matambudziko mazhinji.

Kunyangwe zvisiri zvakajairika, iyo PCB isina chinhu inogona kunge yatove nekuremara isati yawedzera zvikamu. Matambudziko anowanzo wedzera-etching, under-etching uye maburi. Kunyange zvirema zviduku zvinogona kukonzera kukanganisa kwekugadzira.

Nekuda kwekuwedzera kwechikamu density, kudiwa kwema multilayer PCB mabhodhi kuri kuramba kuchiwedzera, zvichiita kuti bhodhi bvunzo dzive dzakakosha zvakanyanya. Mushure mekuunganidza multilayer PCB, kana kutadza kuchiitika, hazvigoneke kuigadzirisa.

Kana iyo yakashama PCB iri skeleton yedare redunhu, izvo zvinoumba nhengo uye tsandanyama. Zvikamu zvinogona kudhura zvakanyanya uye kazhinji zvinonetsa, saka nekufamba kwenguva, kuva nefuremu yakasimba kunogona kudzivirira zvikamu zvepamusoro-soro kubva pakuparara.

Mhando dzekuongorora bhodhi dzisina chinhu
Nzira yekuziva sei kana PCB yakakuvadzwa?
Izvi zvinoda kuongororwa nenzira mbiri dzakasiyana: magetsi uye kuramba.
Iyo isina bare board test inofungawo kuparadzaniswa uye kuenderera kwekubatanidza magetsi. Muedzo wekuzviparadzanisa unoyera hukama pakati pezvibatanidza zviviri zvakaparadzana, nepo bvunzo yekuenderera ichitarisa kuona kuti hapana mapoinzi akavhurika anogona kukanganisa zvazvino.
Kunyangwe kuyedzwa kwemagetsi kwakajairika, kuyedzwa kwekudzivirira hakuna kujairika. Mamwe makambani achashandisa musanganiswa weaya maviri, pachinzvimbo cheupofu kushandisa bvunzo imwe chete.
Resistance test inotumira ikozvino kuburikidza nekondukita kuyera kuyerera kuramba. Kubatana kwenguva refu kana kutetepa kunoburitsa kupikisa kukuru pane kupfupika kana kukora.
Batch test
Kune zvigadzirwa zvine imwe chiyero cheprojekiti, akadhindwa edhisheni bhodhi vagadziri vanowanzo shandisa yakagadziriswa zvigadziriso zvekuyedza, zvinonzi "test racks." Muedzo uyu unoshandisa chitubu-akaremerwa mapini kuyedza ese ekubatanidza nzvimbo paPCB.
Iyo yakagadziriswa bvunzo bvunzo inoshanda zvakanyanya uye inogona kupedzwa mumasekonzi mashoma. Iyo inonyanya kukanganisa ndeyekudhura kwepamusoro uye kushayikwa kwekushanduka. Madhizaini akasiyana ePCB anoda zvigadziriso zvakasiyana uye mapini (akakodzera kugadzirwa kwakawanda).
Prototype bvunzo
Iyo yekubhururuka probe bvunzo inowanzo shandiswa. Maoko maviri emarobhoti ane tsvimbo anoshandisa chirongwa chesoftware kuyedza kubatana kwebhodhi.
Kuenzaniswa neyakagadziriswa bvunzo bvunzo, inotora nguva yakareba, asi inokwanisika uye inochinjika. Kuedza magadzirirwo akasiyana kuri nyore sekuisa faira idzva.

Benefits yekushama board test
Bare board test ine zvakawanda zvakanakira, pasina zvakakomba zvakaipa. Iyi nhanho mukugadzira nzira inogona kudzivirira matambudziko mazhinji. Mari shoma yekutanga mari yekudyara inogona kuchengetedza yakawanda yekuchengetedza uye kutsiva mutengo.

Bare board test inobatsira kuwana matambudziko pakutanga kwekugadzira. Kuwana dambudziko pachine nguva kunoreva kuwana mudzi wedambudziko uye kukwanisa kugadzirisa dambudziko pamudzi waro.

Kana dambudziko rikaonekwa mune inotevera maitiro, zvichave zvakaoma kuwana mudzi wedambudziko. Kamwe bhodhi rePCB rakafukidzwa nezvikamu, hazvibviri kuziva kuti chii chakakonzera dambudziko. Kuongororwa kwepakutanga kunobatsira kugadzirisa chikonzero chechikonzero.

Kuedza zvakare kunorerutsa maitiro ese. Kana matambudziko akawanikwa uye akagadziriswa panguva yeprototype yekuvandudza chikamu, zvinotevera zvikamu zvekugadzira zvinogona kuenderera pasina chipingamupinyi.

Chengetedza nguva yeprojekiti kuburikidza nekuongorora bhodhi

Mushure mekuziva kuti bhodhi rakashama chii, uye nekunzwisisa kukosha kwekushama bhodhi kuyedzwa. Iwe uchaona kuti kunyangwe hurongwa hwekutanga hweprojekiti huchinonoka nekuda kwekuyedzwa, nguva yakachengetwa nekushama bhodhi kuyedzwa kwepurojekiti yakanyanya kupfuura nguva yainopedza. Kuziva kana paine zvikanganiso muPCB zvinogona kuita kuti kugadzirisa kunotevera kuve nyore.

Nhanho yekutanga ndiyo inodhura-inoshanda nguva yekushama board board. Kana iyo yakaunganidzwa redunhu bhodhi ikatadza uye iwe uchida kuigadzirisa ipapo ipapo, kurasikirwa kwemari kunogona kunge kwakapetwa mazana.

Kamwe iyo substrate ine dambudziko, mukana wekuputika kwayo uchakwira zvakanyanya. Kana zvinodhura zvikamu zvakatengeswa kuPCB, kurasikirwa kuchawedzerwa. Nokudaro, ndiyo yakaipisisa kuwana kukanganisa mushure mokunge bhodhi redunhu raungana. Matambudziko anowanikwa panguva iyi anowanzo tungamira mukuraswa kwechigadzirwa chose.

Nekugonesa kwekuvandudza uye kurongeka kwakapihwa nebvunzo, zvakakosha kuita isina bhodhi bvunzo mumatanho ekutanga ekugadzira. Mushure mezvose, kana bhodhi redunhu rekupedzisira rikakundikana, zviuru zvezvikamu zvinogona kuparadzwa.