Tsim ib lub rooj tsav xwm luam tawm (PCB) tuaj yeem zoo li ib txoj haujlwm txaus ntshai, tshwj xeeb tshaj yog rau cov pib tshiab. Txawm li cas los xij, nrog kev taw qhia thiab kev paub zoo, txhua tus tuaj yeem kawm paub tsim lawv tus kheej PCB tsim. Nyob rau hauv no beginner phau ntawv qhia, peb yuav muab ib tug step-by-step cov lus qhia yuav ua li cas los tsim ib tug PCB los ntawm kos. Yog li, cia peb dhia txoj cai hauv!
Kauj Ruam 1: Npaj PCB Tsim
Ua ntej pib txheej txheem kev txhim kho PCB, nws yog ib qho tseem ceeb kom nkag siab meej txog koj qhov project yuav tsum tau ua. Txiav txim siab lub hom phiaj ntawm PCB, cov khoom uas nws yuav txhawb nqa, thiab kev ua haujlwm yuav tsum tau ua. Tsim cov schematics kom pom kev sib txuas hauv Circuit Court thiab xyuas kom muaj kev tsim qauv zoo.
Kauj ruam 2: Tsim lub PCB Layout
Thaum lub schematic npaj txhij, PCB layout tuaj yeem tsim. Xaiv ib qho kev txhim khu kev qha PCB tsim software xws li Eagle, Altium Designer lossis KiCad los tsim koj lub rooj tsavxwm. Pib los ntawm kev tso cov khoom sib tw rau ntawm lub rooj tsavxwm, kom ntseeg tau tias qhov kev sib txuas tau luv tshaj plaws. Ua tib zoo mloog rau cov dav hlau hauv av, lub zog routing, thiab teeb liab kev ncaj ncees. Nco ntsoov khaws cov kev tshem tawm kom raug thiab khaws cov khoom tseem ceeb kom deb ntawm qhov chaw nrov.
Kauj ruam 3: Layout thiab Trace Placement
Routing suav nrog tsim cov kab tooj liab uas txuas cov khoom ntawm PCB. Muab cov kab nyob rau hauv ib txoj kev uas lub suab nrov thiab teeb liab cuam tshuam raug txo kom tsawg. Muab cov khoom zoo sib xws ua ke thiab tsis txhob hla cov kab tshwj tsis yog tsim nyog. Xyuas kom tseeb tias muaj qhov sib txawv ntawm qhov sib txawv kom tsis txhob muaj cov kab hluav taws xob luv luv. Yog tias siv cov khoom siv saum npoo av, xyuas kom tseeb tias cov kab yog nyias txaus kom haum rau cov khoom hneev taw.
Kauj Ruam 4: Ua kom tiav Cov Qauv
Ua tib zoo xyuas koj tus qauv PCB kom raug thiab raug. Tshawb xyuas qhov tsim tsis raug, kev sib txuas tsis pom zoo, lossis qhov yuam kev ntawm qhov chaw tso khoom. Siv cov software tsim cov cai checker los txheeb xyuas cov teeb meem uas yuav tshwm sim. Tom qab txhua yam raug txheeb xyuas, cov ntaub ntawv tsim khoom raug tsim, suav nrog cov ntaub ntawv Gerber thiab Daim Ntawv Pov Thawj ntawm Cov Khoom Siv (BOM), kom ntseeg tau tias PCB raug tsim.
Kauj Ruam 5: Fabrication thiab Assembly
Xa koj tus qauv PCB kawg rau cov chaw tsim khoom ntawm koj xaiv. Ntau yam kev pabcuam PCB hauv online muab kev xaiv pheej yig rau kev tsim koj cov qauv tsim. Xaiv qhov tsim nyog tsis xws li cov ntaub ntawv, tus naj npawb ntawm cov khaubncaws sab nraud povtseg thiab thickness raws li koj xav tau. Thaum lub PCB fabrication tiav, xaj cov khoom tsim nyog thiab pib sib dhos lub rooj tsavxwm. Nco ntsoov ua raws li cov kev coj ua zoo tshaj plaws kom tsis txhob muaj kev puas tsuaj rau cov khoom.
Kauj Ruam 6: Kev kuaj thiab daws teeb meem
Tom qab lub PCB tau sib sau ua ke, nws yog ib qho tseem ceeb rau kev sim nws txoj haujlwm. Siv ib lub multimeter los yog oscilloscope los xyuas cov qib voltage, teeb liab ncaj ncees, thiab kev sib txuas kom raug. Fais fab mus rau PCB thiab sim txhua yam ntawm tus kheej. Yog tias pom muaj teeb meem, siv koj cov txuj ci debugging los daws teeb meem thiab kho kom raug.
Kev tsim kho PCB yuav pib zoo li cov txheej txheem nyuaj, tab sis nrog rau kev ua kom zoo thiab kev nkag siab zoo, nws dhau los ua txoj haujlwm tswj tau. Cov neeg pib tshiab phau ntawv qhia no muab cov txheej txheem ib ntus ntawm yuav ua li cas txhim kho PCB los ntawm kev npaj cov qauv tsim los kuaj nws cov haujlwm. Raws li nrog txhua qhov kev txawj ntse, kev xyaum thiab kev ua haujlwm ntawm tes yuav ntxiv dag zog rau koj qhov kev txawj ntse hauv kev txhim kho PCB. Yog li dhia mus rau hauv, coj qhov kev sib tw, thiab cia koj lub tswv yim ntws los ntawm kev tsim cov PCBs zoo, ua haujlwm zoo. Hmoov zoo!
Post lub sij hawm: Aug-07-2023