Nyob rau hauv lub ntiaj teb fascinating ntawm electronics, PCB los yog Printed Circuit Board yog ib qho tseem ceeb tivthaiv uas yog feem ntau overlooked los ntawm cov neeg siv nruab nrab. Kev nkag siab lub ntsiab lus thiab qhov tseem ceeb ntawm PCB yog qhov tseem ceeb kom nkag siab txog cov haujlwm nyuaj ntawm cov khoom siv hluav taws xob. Nyob rau hauv no blog, peb mam li delve rau hauv lub ntiaj teb no ntawm PCBs, qhia lawv lub hom phiaj, tsim, thiab tseem ceeb nyob rau hauv niaj hnub electronics.
1. Dab tsi yog PCB?
Lub rooj tsav xwm luam tawm (PCB) yog lub vaj huam sib luag tiaj tiaj ua los ntawm cov khoom siv tsis zoo, feem ntau yog fiberglass, siv los txuas thiab txhawb nqa ntau yam khoom siv hluav taws xob. Cov khoom no yog soldered rau lub rooj tsavxwm, cia cov hluav taws xob tam sim no ntws thiab xyuas kom cov cuab yeej ua haujlwm zoo. PCBs yog siv nyob rau hauv feem ntau cov khoom siv hluav taws xob, los ntawm smartphones thiab computers mus rau cov khoom siv hauv tsev thiab tsheb.
2. Qhov tseem ceeb ntawm PCB hauv hluav taws xob:
Lub hom phiaj tseem ceeb ntawm PCB yog muab lub platform ruaj khov thiab txhim khu kev qha rau kev koom ua ke ntawm cov khoom siv hluav taws xob. PCB tsim thiab layout yog ua tib zoo npaj los xyuas kom meej qhov kev ua tau zoo, cov teeb liab kis tau zoo thiab siv qhov chaw. Yog tsis muaj PCB, cov khoom siv hluav taws xob yuav ntxhov thiab tsis ntseeg, ua rau muaj kev ua haujlwm tsis zoo.
3. PCB tsim thiab tsim:
PCBs muaj ntau txheej txheej, nrog rau txhua txheej ua haujlwm rau lub hom phiaj tshwj xeeb. Lub innermost txheej yog hu ua substrate thiab muab txhua yam kev txhawb nqa rau lub rooj tsavxwm Circuit Court. Tso ib txheej nyias ntawm tooj liab nyob rau sab saum toj ntawm lub substrate los tsim cov kab hluav taws xob. Cov kab no ua raws li txoj hauv kev tam sim no, tso cai rau cov khoom sib txuas lus.
Txhawm rau kom ntseeg tau tias cov khoom siv tau ruaj khov, cov ntaub qhwv tau ntxiv rau hauv PCB nto. Cov ntaub qhwv no ua cov ntsiab lus sib txuas rau ntau yam khoom siv hluav taws xob xws li resistors, capacitors, thiab kev sib xyaw ua ke. Cov txheej txheem tsim muaj qhov sib npaug ntawm kev ua haujlwm, qhov loj me thiab kev ua haujlwm zoo.
4. Cov txheej txheem tsim khoom:
Kev tsim cov PCBs suav nrog ntau cov kauj ruam, suav nrog kev tsim, tsim khoom, thiab sib dhos. Thaum tus tsim tiav siv lub khoos phis tawj tshwj xeeb-pab tsim (CAD) software, cov txheej txheem tsim khoom pib. Nws feem ntau suav nrog kev luam tawm cov qauv hauv Circuit Court rau ntawm lub rooj tsav xwm tooj liab, qhov drilling qhov rau cov khoom siv hauv lub qhov, thiab siv cov tshuab ua haujlwm tsis siv neeg los txuas cov khoom mus rau lub rooj tsavxwm.
5. Kev nce qib hauv PCB thev naus laus zis:
PCB thev naus laus zis tau hloov pauv ntau xyoo dhau los, dhau los ua kev sib cog lus, ua haujlwm tau zoo thiab ib puag ncig zoo. Kev taw qhia ntawm nto mount technology (SMT) tau yooj yim tsim cov khoom me me, thinner PCBs, ua rau kev tsim cov khoom siv hluav taws xob zoo nkauj.
Tsis tas li ntawd, kev nce qib xws li cov ntawv luam tawm yooj yim (circuit boards uas tuaj yeem khoov lossis quav) tau hloov pauv kev lag luam thev naus laus zis. Flexible PCBs txhim kho cov kav ntev thiab qhov chaw siv, ua kom muaj chaw rau kev tsim thiab kev siv tshiab.
Printed Circuit Boards (PCBs) ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm ntawm peb cov khoom siv hluav taws xob niaj hnub. Los ntawm cov xov tooj smartphones mus rau tsheb, kev nkag siab tias PCB yog dab tsi pab peb nkag siab qhov nyuaj thiab kev ua haujlwm zoo tom qab cov khoom siv no. PCBs tsis tsuas yog muab kev ruaj ntseg nkaus xwb tab sis kuj yog txoj hauv kev rau kev txhim kho ntxiv hauv kev lag luam hluav taws xob.
Post lub sij hawm: Sep-20-2023