Newbies feem ntau tsis meej pem “PCB schematic” with “PCB design document” when talking about printed circuit boards, but they actually mean different things. Nkag siab qhov sib txawv ntawm lawv yog tus yuam sij rau kev ua tiav PCB kev tsim khoom, yog li tsab xov xwm no yuav rhuav tshem qhov sib txawv ntawm PCB schematics thiab PCB tsim rau cov pib ua qhov no zoo dua.

Ua ntej nkag mus rau qhov sib txawv ntawm cov lej thiab tsim, nws tseem ceeb kom paub, PCB yog dab tsi? Inside electronic equipment, there are printed circuit boards, also known as printed circuit boards. The green circuit board, made of precious metal, connects all the electrical components of the device and enables it to function properly. Electronics yuav tsis ua haujlwm yam tsis muaj PCBS.

PCB schematic daim duab thiab PCB tsim

Cov txheej txheem PCB yog qhov yooj yim tsim ob-seem tsim qauv uas qhia txog kev ua haujlwm thiab kev sib txuas ntawm cov khoom sib txawv. PCB tsim yog txheej txheej peb sab, txhawm rau txhawm rau ua haujlwm ib txwm muaj ntawm Circuit Court tom qab khij qhov chaw ntawm cov khoom.

Therefore, PCB schematic is the first part of the design of printed circuit board. Nov yog cov duab sawv cev, tsis hais sau lossis cov ntaub ntawv, uas siv cov cim pom zoo los piav qhia kev sib txuas hauv Circuit. Nws tseem qhia txog cov khoom siv uas yuav tsum tau siv thiab yuav siv lawv li cas.

Raws li lub npe cuam tshuam, PCB cov phiaj xwm yog phiaj xwm, txheej txheem txheej txheem. Nws tsis qhia meej tias cov khoom yuav muab tso rau qhov twg. Hloov chaw, cov txheej txheem piav qhia yuav ua li cas PCB thiaj li ua tiav qhov sib txuas thiab tsim ib feem tseem ceeb ntawm txoj kev npaj.

Thaum cov qauv txheej txheem tiav, PCB tsim los tom ntej. Design is the layout or physical representation of the PCB schematic, including copper wiring and hole layout. PCB tsim qhia qhov chaw ntawm cov khoom sib txuas thiab lawv txuas nrog tooj liab.

PCB design is a performance-related phase. Cov kws tsim txuj ci tsim cov khoom siv tiag tiag nyob rau sab saum toj ntawm PCB tsim, tso cai rau lawv ntsuas seb cov cuab yeej ua haujlwm tau zoo li cas. Raws li tau hais ua ntej, txhua tus neeg yuav tsum muaj peev xwm nkag siab txog PCB cov txheej txheem, tab sis nws tsis yooj yim to taub nws cov haujlwm los ntawm kev saib ntawm tsab ntawv.

Ob theem tau ua tiav, thiab thaum koj txaus siab rau PCB qhov kev ua tau zoo, koj yuav tsum siv lawv los ntawm cov chaw tsim khoom.

PCB schematic ntsiab

Tam sim no peb nkag siab qhov sib txawv ntawm ob, cia peb ua tib zoo saib cov ntsiab lus ntawm PCB cov txheej txheem. Raws li peb tau hais, txhua qhov kev sib txuas tau pom, tab sis muaj qee qhov kev ceeb toom kom nco ntsoov:

In order to see the connections clearly, they are not created to scale; Hauv PCB tsim, lawv tuaj yeem sib raug zoo heev

Qee qhov kev sib txuas tuaj yeem hla ib leeg, uas yog qhov ua tsis tau

Qee qhov kev sib txuas yuav nyob ntawm ob sab ntawm qhov teeb tsa, nrog cov cim qhia tias lawv tau txuas nrog

PCB “daim phiaj” no tuaj yeem yog nplooj ntawv, ob nplooj ntawv, lossis txawm tias ntau nplooj ntawv piav qhia txhua yam uas xav tau suav nrog hauv kev tsim

Ib lub ntsiab lus kawg uas yuav tsum tau nco yog tias cov lej nyuaj ntau tuaj yeem ua pawg los ntawm kev ua haujlwm txhawm rau txhim kho kev nyeem tau. Kev teeb tsa kev sib txuas hauv txoj hauv kev no tsis tshwm sim ntawm theem tom ntej, thiab cov phiaj xwm feem ntau tsis sib xws nrog qhov tsim qauv zaum kawg ntawm 3D qauv.

Cov Qauv Tsim PCB

Tam sim no nws yog lub sijhawm los tshuaj xyuas cov ntsiab lus ntawm PCB tsim cov ntawv. Nyob rau theem no peb txav los ntawm kev sau cov phiaj xwm mus rau qhov sawv cev ntawm lub cev tsim los ntawm kev siv laminate lossis cov khoom siv ceramic. Saj zawg zog PCBS tau siv rau cov ntawv thov nyuaj uas xav tau qhov chaw me me ntxiv.

Cov ntsiab lus ntawm PCB tsim daim ntawv ua raws cov txheej txheem teev tseg los ntawm cov txheej txheem txheej txheem, tab sis, raws li tau hais ua ntej, ob qho zoo sib xws. Peb twb tau tham txog PCB cov lej, tab sis qhov sib txawv dab tsi tuaj yeem pom hauv daim ntawv tsim?

Thaum peb tham txog PCB daim ntawv tsim qauv, peb tab tom tham txog tus qauv 3D uas suav nrog cov ntawv luam tawm Circuit board thiab daim ntawv tsim qauv. Lawv tuaj yeem yog ib leeg lossis ntau txheej, txawm hais tias ob txheej yog qhov feem ntau. Peb tuaj yeem soj ntsuam qee qhov sib txawv ntawm PCB schematics thiab PCB tsim cov ntaub ntawv:

Txhua lub Cheebtsam yog qhov loj me thiab qhov chaw nyob

Yog tias ob lub ntsiab lus yuav tsum tsis txuas nrog, lawv yuav tsum tau hloov pauv lossis hloov mus rau lwm txheej PCB kom tsis txhob hla ib leeg ntawm tib txheej

Ib qho ntxiv, raws li peb tham luv luv, PCB tsim muaj kev txhawj xeeb ntau dua nrog kev ua tau zoo, vim qhov no yog qee qhov kev txheeb xyuas theem ntawm cov khoom kawg. Txij ntawm no mus, qhov ua tau zoo ntawm kev ua haujlwm tiag tiag ntawm kev tsim qauv yuav tsum los ua si, thiab lub cev xav tau ntawm lub rooj tsav xwm luam tawm yuav tsum tau txiav txim siab. Qee qhov ntawm no suav nrog:

How is the spacing of the components allowed for adequate heat distribution

Muaj cov sib txuas nyob ib ncig ntawm cov ntug

Hais txog qhov tam sim no thiab cua sov, tuab npaum li cas yuav tsum muaj ntau txoj hauv kev

Vim tias kev txwv lub cev thiab xav tau txhais tau tias PCB tsim cov ntaub ntawv feem ntau zoo sib txawv los ntawm kev tsim ntawm cov txheej txheem, cov ntaub ntawv tsim muaj xws li txheej txheej luam ntawv. Lub vijtsam luam tawm txheej qhia cov tsiaj ntawv, tus lej thiab cim los pab cov kws tsim khoom sib sau ua ke thiab siv lub rooj tsavxwm.

Nws yog qhov yuav tsum tau ua kom tag nrho cov khoom ua haujlwm raws li tau npaj tseg tom qab tau sib sau ua ke rau hauv daim ntawv luam tawm Circuit Board. Yog tsis yog, nws yuav tsum tau rov sau dua.

xaus

Txawm hais tias PCB cov duab thiab PCB tsim cov ntaub ntawv feem ntau tsis meej pem, qhov tseeb ua PCB cov duab thiab PCB tsim hais txog ob qhov txheej txheem cais thaum tsim cov ntawv luam tawm. PCB tsim, uas yog ib feem tseem ceeb ntawm PCB kev ua tau zoo thiab kev ncaj ncees, yuav tsum tau ua ua ntej tsim PCB daim duab qhia chaw uas tuaj yeem kos cov txheej txheem.