PCB qauv:

Ib qho yooj yim PCB suav nrog ib qho ntawm cov khoom tiv thaiv thiab txheej ntawm cov ntawv ci tooj liab, laminated mus rau hauv txheej txheej. Cov duab kos tshuaj cais cov tooj liab kom cais cov coj ua hu ua cov kab lossis cov kab hauv qab, cov ntaub qhwv rau kev sib txuas, hla-qhov rau kev hloov pauv kev sib txuas ntawm cov tooj liab, thiab cov yam ntxwv ntawm thaj chaw muaj zog rau tiv thaiv EM lossis rau lub hom phiaj sib txawv. Cov ntsia hlau ua cov xov hlau tuav nyob rau hauv qhov chaw thiab tau sib cais los ntawm huab cua thiab cov khoom siv hauv PCB. Qhov saum npoo ntawm PCB yuav muaj lub npog uas tiv thaiv tooj liab los ntawm kev xeb thiab txo qhov muaj peev xwm ntawm cov kab laug sab luv ntawm cov kab los yog tsis xav tau hluav taws xob tiv tauj nrog cov xov tooj tsis pom. Vim tias nws muaj peev xwm kwv yees kev siv vuam luv luv, txheej txheej hu ua solder resistance.

Ib qho ntxiv, tus qauv tseem ceeb ntxiv rau cov kauj ruam tsim nyog xav tau rau PCB tsim yuav tsum tau tham.

PCB tsim yooj yim:

Muaj ntau qhov kev qhia PCB tsim hauv Is Taws Nem, cov txheej txheem tsim PCB yooj yim thiab cov txheej txheem tsim PCB loj uas tam sim no siv. Tab sis yog tias koj xav tau phau ntawv qhia ua tiav ntawm PCB cov qauv tsim thiab cov qauv sib txawv thiab cov qauv, muaj cov ntaub ntawv qhia chaw nyob hauv Is Taws Nem txog PCBS hu ua RAYMING PCB & Qhov. Txhua tus qauv PCB thiab ntau yam kev thov PCB, txhua yam tuaj yeem pom ntawm lub vev xaib no.

Txhawm rau tsim PCB, peb yuav tsum xub kos cov duab kos ntawm PCB. Cov txheej txheem yuav muab daim phiaj xwm txheej ntawm PCB rau koj, uas yuav teeb tsa cov qauv lossis taug qab qhov chaw ntawm ntau yam khoom siv ntawm PCB.

PCB tsim cov kauj ruam:

Cov hauv qab no yog cov kauj ruam tsim nyog los tsim PCB;

Nruab software los tsim PCB.

Tsim los siv PCB tsim software schematic.

Teem kab dav.

3 d view

PCB tsim software:

Muaj ntau qhov sib txawv thiab muaj txiaj ntsig software ntawm kev ua lag luam rau kev tsim cov phiaj xwm ib feem ntawm PCB. Nov yog dab tsi qhov txheej txheem ntawm PCB zoo li;

Nkag siab PCB thiab kawm PCB yooj yim tsim thiab PCB pov thawj

Daim duab 2: SCHEMATIC daim duab ntawm PCB Circuit

Txhawm rau tsim cov phiaj xwm ib feem ntawm PCB, ntau lub software tau siv, feem ntau yog siv;

KiCad

Cuam Tshuam

dav dawb hau

Orcad

Tsim PCB ntawm Proteus:

Proteus tam sim no siv los tsim PCBS. Nws yog qhov siv tau yooj yim heev thiab txhua tus neeg uas tsis paub nws yuav sai sai paub nrog nws thiab muaj txhua tus yam ntxwv. Qhov no yog vim nws muaj qhov tshwj xeeb heev thiab siv tau yooj yim interface. Koj tuaj yeem yooj yim pom txhua yam khoom koj xav ntxiv rau koj li PCB. Cov xov hlau sib txawv thiab lawv cov kev sib txuas tuaj yeem ua tau yooj yim.

Nkag siab PCB thiab kawm PCB yooj yim tsim thiab PCB pov thawj

Kev paub nrog software yog qhov tseem ceeb kom ua tiav txoj haujlwm. Proteus muab kev yooj yim heev los nrhiav txhua yam khoom tsim nyog uas koj xav kom muaj hauv koj li PCB. Koj tuaj yeem nkag mus tau yooj yim kev sib txuas thiab txhua yam cuab yeej los ntawm lub qhov rais loj, raws li qhia hauv daim duab saum toj no. Cov neeg siv kuj tseem tuaj yeem pom cov qauv ntawm cov khoom sib txawv, yog li lawv tuaj yeem xaiv cov cuab yeej nrog cov qauv tshwj xeeb txhawm rau tsim PCB.

Kev ua tiav PCB tsim tsim ntawm Proteus tau muab hauv qab no;

Nkag siab PCB thiab kawm PCB yooj yim tsim thiab PCB pov thawj

Daim duab 4: PCB tsim qauv

Kev teeb tsa tiav ntawm PCB tsim los siv Proteus software tau qhia saum toj no. Ib tus tuaj yeem yooj yim pom cov khoom sib txawv ua ke thiab teeb tsa ua ke kom tau raws li qhov xav tau ntawm PCB ua haujlwm, lub tshuab hluav taws xob, LED thiab txhua lub xov hlau txuas nrog ua ntu zus.

Routing:

Thaum cov txheej txheem ib feem ntawm PCB tsim tau ua tiav nrog kev pab los ntawm software, kev sib txuas ntawm PCB tau tshwm sim. Tab sis ua ntej thaiv, cov neeg siv PCB tuaj yeem tshawb xyuas qhov siv tau ntawm kev tsim hluav taws xob nrog kev pab los ntawm kev simulation. Tom qab kuaj xyuas qhov siv tau, txoj hauv kev tiav. Hauv kev khiav, feem ntau software muab ob txoj kev xaiv.

Kev tuav txoj kev

Tsis siv neeg routing

Hauv phau ntawv hla tebchaws, tus neeg siv tso txhua qhov khoom sib cais thiab txuas nws raws li daim duab qhia chaw, yog li hauv phau ntawv qhia kev, tsis tas yuav tsum kos cov duab kos ua ntej txuas.

Nyob rau hauv cov ntaub ntawv ntawm tsis siv neeg thaiv, tus neeg siv tsuas yog xav tau los xaiv txoj kab dav. Tom qab ntawd PCB tau tsim los ntawm kev tso cov khoom sib txuas los ntawm cov kab hluav taws xob tsis siv neeg, thiab tom qab ntawd txuas nrog raws li daim duab qhia chaw tsim los ntawm tus neeg siv. Sim sib txuas sib txuas sib txuas ua ke tsis siv neeg siv software kom cov yuam kev tsis tshwm sim. Cov neeg siv tuaj yeem tsim ib lossis ntau txheej PCBS nyob ntawm daim ntawv thov.

Teem cov kab dav:

Cov kab dav dav nyob ntawm qhov ntws tam sim no los ntawm nws. Cov mis siv los laij thaj tsam muaj raws li hauv qab no:

Ntawm no “Kuv” yog qhov tam sim no, “δ T” kub nce, thiab “A” yog thaj av ib puag ncig. Tam sim no xam qhov dav ntawm kab,

Dav = Thaj tsam/(tuab * 1.378)

K = 0.024 rau txheej sab hauv thiab 0.048 rau txheej txheej

Cov ntawv xa mus rau ob tog PCB zoo li qhov no:

Daim duab 1: Kev xa cov ntaub ntawv

Cov kab daj tau siv rau PCB ciam teb, txwv kev teeb tsa cov txheej txheem thiab cov txheej txheem thaiv hauv qhov tsis siv neeg thaiv. Cov kab liab thiab xiav qhia cov kab hauv qab thiab sab saum toj tooj liab, feem.

3d saib:

Qee qhov software xws li Proteus thiab KiCad muab peev xwm saib 3D, uas muab 3D saib ntawm PCB nrog cov khoom tso rau nws kom pom kev zoo dua. Ib tus tuaj yeem txiav txim siab yooj yim seb lub Circuit Court yuav zoo li cas tom qab nws tsim tawm. Tom qab thaiv, PDF lossis Gerber cov ntaub ntawv ntawm cov tooj liab tuaj yeem xa tawm thiab luam tawm ntawm qhov tsis zoo.