cov PCB tau tsim los ntawm Austrian Paul Eisler, uas thawj zaug tshaj tawm cov ntawv xov xwm hluav taws xob hauv xov tooj cua hauv xyoo 1936. Xyoo 1943, Kev Siv Tshuab tau siv rau kev siv tub rog hauv Tebchaws Meskas, thiab xyoo 1948, qhov kev tsim khoom tau raug pom zoo rau kev siv lag luam hauv Tebchaws Meskas. Txij li thaum nruab nrab-1950s, luam tawm cov laug cam tau siv dav.

PCB yog siv thoob plaws, dav siv hauv kev sib txuas lus, kev kho mob, kev tswj hwm kev lag luam, tsheb, tub rog, kev ya dav hlau, kev ya dav hlau, neeg siv khoom thiab lwm yam lag luam. Hauv txhua yam khoom siv hluav taws xob, PCB, yog lub hauv paus tseem ceeb ntawm cov khoom kho vajtse, ua lub luag haujlwm tseem ceeb.

Vim li cas PCBS ntsuab?

Yog tias koj ceev faj, koj yuav pom tias PCBS feem ntau yog ntsuab (dub, xiav, liab thiab lwm yam xim muaj tsawg dua), vim li cas qhov no? Qhov tseeb, lub rooj tsav xwm hauv nws tus kheej yog xim av. Cov xim ntsuab peb pom yog daim npog qhov ncauj. Cov txheej txheej tiv thaiv tsis tas yuav ntsuab, muaj xim liab, daj, xiav, ntshav, dub thiab lwm yam, tab sis ntsuab yog qhov feem ntau.

Raws li vim li cas thiaj siv txheej txheej txheej txheej ntsuab, feem ntau muaj cov hauv qab no:

1) Ntsuab tsis zoo rau lub qhov muag. Txij thaum yau los, tus kws qhia ntawv tau hais rau peb tias ntsuab yog qhov zoo rau qhov muag, tiv thaiv qhov muag thiab tiv thaiv kev qaug zog. Kev tsim khoom thiab kho cov neeg ua haujlwm tsis yooj yim rau qhov muag nkees thaum ntsia ntawm PCB pawg thawj coj ntev, uas yuav ua rau lub qhov muag puas tsawg.

2) Tus nqi qis dua. Vim tias hauv cov txheej txheem tsim khoom, ntsuab yog lub hauv paus tseem ceeb, kev yuav khoom ntawm cov xim ntsuab ntuj yuav loj dua, kev yuav cov xim ntsuab yuav qis dua lwm cov xim. Tib lub sijhawm thaum tsim ntau yam siv tib xim xim kuj tseem tuaj yeem txo tus nqi hloov pauv hlau.

3) Thaum lub rooj tsavxwm tau txuas rau ntawm SMT, nws yuav tsum hla cov tin thiab cov ntawv tshaj tawm thiab daim ntawv pov thawj AOI kawg. Cov txheej txheem no yuav tsum tau ntsuas los ntawm kev kho qhov muag pom tseeb, thiab cov txiaj ntsig ntawm qhov ntsuas tau zoo dua yog tias muaj keeb kwm ntsuab.

PCB tsim li cas?

Txhawm rau tsim PCB, txheej txheej ntawm PCB yuav tsum tau tsim ua ntej. PCB tsim yuav tsum tau tso siab rau EDA tsim cov cuab yeej software thiab cov platform, xws li Cadence Allegro, Mentor EE, Mentor Pads, Altium Designer, Protel, thiab lwm yam. Tam sim no, vim kev ua haujlwm me me txuas ntxiv, qhov tseeb thiab nrawm ntawm cov khoom siv hluav taws xob, PCB tsim tsis tsuas yog xav tau kom ua tiav kev sib txuas hauv Circuit Court ntawm ntau yam khoom siv, tab sis kuj yuav tsum txiav txim siab ntau yam kev cov nyom los ntawm kev kub ceev thiab siab ceev.

Cov txheej txheem yooj yim ntawm PCB tsim yog raws li hauv qab no: kev npaj ua ntej → PCB tsim qauv → PCB txheej txheem tsim → PCB txwv kev teeb tsa thiab thaiv kev tsim qauv → thaiv kev ua kom zoo dua thiab tso qhov screen luam tawm → network DRC tshuaj xyuas thiab teeb tsa qauv → PCB pawg thawj coj ua.

Cov kab dawb ntawm PCB yog dab tsi?

Peb nquag pom kab dawb ntawm PCBS. Koj puas tau xav tsis thoob tias lawv yog dab tsi? Cov kab ntawv dawb no tau siv los cim cov khoom thiab luam tawm cov ntaub ntawv tseem ceeb PCB rau hauv pawg thawj coj, hu ua “luam ntawv tshuaj ntsuam.” Nws tuaj yeem luam tawm ntawm lub rooj tsavxwm lossis luam tawm ntawm PCB siv lub tshuab luam ntawv inkjet.

Cov khoom siv hauv PCB yog dab tsi?

Muaj ntau tus neeg ib feem ntawm PCB, txhua tus muaj lub luag haujlwm sib txawv, uas ua ke ua tag nrho cov haujlwm ntawm PCB. Cheebtsam ntawm PCB suav nrog resistors, potentiometers, capacitors, inductors, relays, roj teeb, fuses, transformers, diodes, transistors, LED, keyboards, thiab lwm yam.

Puas muaj xov hlau ntawm PCB?

Txog rau pib, PCBS tsis tau siv xov hlau txuas. Qhov no yog qhov nthuav vim tias feem ntau cov khoom siv hluav taws xob thiab thev naus laus zis xav tau xov hlau txuas. Tsis muaj cov xov hlau nyob hauv PCB, tab sis cov xov tooj tooj liab tau siv ncaj qha tam sim no thoob plaws hauv lub cuab yeej thiab txuas txhua yam khoom siv.