Thaum tham txog cov ntawv luam tawm Circuit Board, cov novices feem ntau tsis meej pem "PCB schematics" thiab "PCB tsim cov ntaub ntawv", tab sis qhov tseeb lawv hais txog ntau yam. Kev nkag siab txog qhov sib txawv ntawm lawv yog tus yuam sij rau kev ua tiav kev tsim cov PCBs, yog li txhawm rau tso cai rau cov pib ua qhov zoo dua, tsab xov xwm no yuav rhuav tshem qhov sib txawv tseem ceeb ntawm PCB schematics thiab PCB tsim.
PCB yog dab tsi
Ua ntej nkag mus rau qhov sib txawv ntawm schematic thiab tsim, dab tsi yuav tsum tau to taub yog dab tsi yog PCB?
Yeej, muaj cov ntawv luam tawm hauv Circuit Court boards hauv cov khoom siv hluav taws xob, tseem hu ua cov ntawv luam tawm Circuit boards. Lub rooj tsav xwm ntsuab no ua los ntawm cov hlau muaj txiaj ntsig txuas tag nrho cov khoom siv hluav taws xob ntawm lub cuab yeej thiab ua rau nws ua haujlwm tau zoo. Yog tsis muaj PCB, cov khoom siv hluav taws xob yuav tsis ua haujlwm.
PCB schematic thiab PCB tsim
PCB schematic yog ib qho yooj yim ob-dimensional Circuit Court tsim uas qhia txog kev ua haujlwm thiab kev sib txuas ntawm cov khoom sib txawv. Lub PCB tsim yog ib qho kev teeb tsa peb sab, thiab txoj hauj lwm ntawm cov khoom yog cim tom qab lub Circuit Court tau lees tias ua hauj lwm ib txwm.
Yog li, PCB schematic yog thawj feem ntawm kev tsim ib lub rooj tsav xwm luam tawm. Qhov no yog cov duab sawv cev uas siv cov cim pom zoo los piav txog kev sib txuas hauv Circuit Court, tsis hais hauv daim ntawv sau lossis hauv cov ntaub ntawv. Nws kuj ua rau cov khoom siv los siv thiab lawv txuas nrog li cas.
Raws li lub npe qhia, PCB schematic yog ib txoj kev npaj thiab daim ntawv qhia. Nws tsis qhia qhov twg cov khoom yuav raug muab tso tshwj xeeb. Xwb, schematic piav qhia yuav ua li cas PCB thaum kawg yuav ua tiav kev sib txuas thiab ua ib feem tseem ceeb ntawm txoj kev npaj.
Tom qab daim ntawv qhia ua tiav, cov kauj ruam tom ntej yog PCB tsim. Tus qauv tsim yog qhov kev teeb tsa lossis lub cev sawv cev ntawm PCB schematic, nrog rau kev teeb tsa ntawm tooj liab kab thiab qhov. PCB tsim qhia qhov chaw ntawm cov khoom uas tau hais los saum no thiab lawv cov kev sib txuas rau tooj liab.
PCB tsim yog ib theem uas muaj feem xyuam rau kev ua tau zoo. Cov kws tsim khoom tsim cov khoom siv tiag tiag raws li PCB tsim kom lawv tuaj yeem kuaj xyuas seb cov khoom puas ua haujlwm zoo. Raws li peb tau hais ua ntej lawm, leej twg yuav tsum nkag siab txog PCB schematic, tab sis nws tsis yooj yim rau kev nkag siab txog nws txoj haujlwm los ntawm kev saib tus qauv.
Tom qab ob theem no tau ua tiav, thiab koj txaus siab rau qhov kev ua tau zoo ntawm PCB, koj yuav tsum siv nws los ntawm cov chaw tsim khoom.
PCB schematic yam
Tom qab roughly nkag siab qhov sib txawv ntawm ob, cia peb saib ze dua ntawm cov ntsiab lus ntawm PCB schematic. Raws li peb tau hais, txhua qhov kev sib txuas tau pom, tab sis muaj qee qhov lus ceeb toom kom nco ntsoov:
Txhawm rau kom pom cov kev sib txuas kom pom tseeb, lawv tsis raug tsim los ntsuas; hauv kev tsim PCB, lawv yuav nyob ze rau ib leeg
Qee qhov kev sib txuas yuav hla ib leeg, uas yog qhov ua tsis tau
Qee qhov txuas yuav nyob rau sab nraud ntawm qhov kev teeb tsa, nrog lub cim qhia tias lawv txuas
PCB "blueprint" no tuaj yeem siv ib nplooj ntawv, ob nplooj ntawv lossis ob peb nplooj ntawv los piav qhia txhua cov ntsiab lus uas yuav tsum tau suav nrog hauv kev tsim
Qhov kawg uas yuav tsum nco ntsoov yog tias cov schematics nyuaj tuaj yeem muab ua pawg los ntawm kev ua haujlwm los txhim kho kev nyeem ntawv. Kev teeb tsa kev sib txuas hauv txoj kev no yuav tsis tshwm sim nyob rau theem tom ntej, thiab cov schematics feem ntau tsis phim qhov kawg tsim ntawm 3D qauv.
PCB tsim cov ntsiab lus
Nws yog lub sijhawm los delve tob rau hauv cov ntsiab lus ntawm PCB tsim cov ntaub ntawv. Nyob rau theem no, peb tau hloov los ntawm cov ntawv sau ua qauv mus rau lub cev sawv cev tsim los ntawm cov khoom siv laminate lossis ceramic. Thaum qhov chaw tshwj xeeb yog qhov yuav tsum tau ua, qee qhov kev siv ntau dua yuav tsum tau siv cov PCBs hloov tau.
Cov ntsiab lus ntawm PCB tsim cov ntaub ntawv ua raws li daim phiaj xwm tsim los ntawm schematic flow, tab sis, raws li tau hais ua ntej, ob qho tib si sib txawv heev. Peb tau tham txog PCB schematics, tab sis qhov sib txawv dab tsi tuaj yeem pom hauv cov ntaub ntawv tsim?
Thaum peb tham txog PCB tsim cov ntaub ntawv, peb tab tom tham txog tus qauv 3D, uas suav nrog cov ntawv luam tawm thiab cov ntaub ntawv tsim. Lawv tuaj yeem yog ib txheej lossis ntau txheej, txawm hais tias ob txheej yog feem ntau. Peb tuaj yeem soj ntsuam qee qhov sib txawv ntawm PCB schematics thiab PCB tsim cov ntaub ntawv:
Tag nrho cov Cheebtsam yog qhov loj thiab positioned kom raug
Yog tias ob lub ntsiab lus yuav tsum tsis txhob txuas, lawv yuav tsum mus ncig lossis hloov mus rau lwm txheej PCB kom tsis txhob hla ib leeg ntawm tib txheej.
Tsis tas li ntawd, raws li peb tau tham luv luv, PCB tsim tau them nyiaj ntau dua rau qhov ua tau zoo, vim tias qhov no yog qee qhov kev txheeb xyuas theem ntawm cov khoom kawg. Lub sijhawm no, qhov kev ua tau zoo ntawm tus qauv tsim yuav tsum ua haujlwm tiag tiag los ntawm kev ua si, thiab lub cev xav tau ntawm cov ntawv luam tawm Circuit Board yuav tsum raug txiav txim siab. Qee ntawm lawv suav nrog:
Yuav ua li cas qhov sib nrug ntawm cov khoom tso cai rau cov cua sov kom txaus
Connectors ntawm ntug
Hais txog cov teeb meem tam sim no thiab cua sov, yuav tsum tuab npaum li cas ntawm cov kab sib txawv
Vim tias cov kev txwv ntawm lub cev thiab cov kev xav tau txhais tau hais tias cov ntaub ntawv tsim PCB feem ntau zoo li txawv ntawm cov qauv tsim ntawm cov schematic, cov ntaub ntawv tsim muaj xws li cov ntaub ntawv lo lo ntxhuav. Cov kab ntawv lo lo ntxhuav qhia cov tsiaj ntawv, cov lej thiab cov cim los pab cov engineers sib sau ua ke thiab siv lub rooj tsavxwm.
Nws yuav tsum tau ua haujlwm raws li tau npaj tseg tom qab tag nrho cov khoom sib sau ua ke ntawm lub rooj tsav xwm luam tawm. Yog tsis yog, koj yuav tsum redraw.