PCB Board Basic Knowledge

Thaum ua ib tug neeg hlau, PCB board yog inevitable. Kev nkag siab yav dhau los ntawm nws tsuas yog siv rau qib no. Tsis ntev los no, kuv tau kawm txog kev tsim cov PCB board thiab pom tias kuv tsis paub qhov kev paub ua ntej, yog li kuv tau txheeb xyuas los qhia rau koj.

1. Ncej los ntawm perforated-kev sib txuas channel ntawm ob txheej txheej board
Qhov no yog qhov txuas tsis tau tshaj plaws ua ntej. Thaum koj tau txais PCB, koj yuav pom tias muaj ntau qhov me me nyob rau sab saum toj ntawm rab koob. Qhov no yog qhov over-qhov. Cov qauv yog raws li nram no.

Tshaj qhov
Cov nyhuv ntawm perforated yog tsuas yog txuas cov tooj liab nyob ntawm sab xub ntiag thiab sab nraub qaum ntawm ob daim hlau. Feem ntau ntawm qhov tshaj-qhov yog qhov chaw liab hauv daim duab. Thaum cov xaim pem hauv ntej yog staggered, nws tuaj yeem siv tau. Ib yam li "Interchange Choj", txoj hlua hluav taws xob ntawm ob lub dav hlau tau hloov mus rau hauv qhov chaw peb-dimensional peb-dimensional. Qhov ntau tshaj qhov nyob rau hauv cheeb tsam xiav yog tsuas yog txuas rau cov phaj tooj liab ntawm ob sab kom ua tiav cov txiaj ntsig ntawm "cov av".

2. ncoo-tuaj yeem siv tau los txheeb xyuas qhov zoo thiab tsis zoo electrodes
Cov ntaub qhwv yog siv rau vuam ntawm cov khoom siv pins. Qhov luaj li cas yog loj dua li-qhov. Interestingly, cov ntaub qhwv tsis yog tsuas yog cov duab ntawm lub voj voog, tab sis kuj yog cov duab ntawm lub square. Kuv tsis tau xyuam xim rau qhov nthuav dav no, haha)

Kuj tseem muaj qhov nthuav dav me me uas qee cov ntaub qhwv lub voj voog yog tus ntoo khaub lig-zoo li tus, uas ncaj qha hauv av tus pin. Lub hauv paus ntawm thepcb board yeej txuas nrog tus ncej tsis zoo. Nws tau lees paub tias txhua tus pins GND muaj ntau.

3. Cov khoom siv hluav taws xob ntau
Qhov feem ntau siv kuj yuav tsis muab tso. Tam sim no qhov kev siv tseem ceeb yog thaj ua rau thaj tsam, thiab muaj ob peb qhov hluav taws xob txuas ncaj qha.
Lub plawv ntawm crystal-circuit board, tus lej saum toj no sawv cev rau qhov zaus

Daim duab 3.1 Crystal
Capacitors, dub cylindrical, tiaj tus duab

Digital tube, ntawm chav kawm, tam sim no ntau cov lus qhia ncaj qha tau siv ncaj qha

buzzer

Plaub-legged hloov-pins nrog tib xim hauv daim duab.

4.PCB ntim
Lub thiaj li hu ua PCB ntim yog los qhia cov khoom siv hluav taws xob tiag tiag, nti thiab lwm yam tsis zoo (xws li cov khoom loj thiab qhov ntev, qhov dav thiab qhov dav, qhov sib txawv ntawm cov yeeb nkab, thiab lwm yam) hauv daim duab, kom lawv tuaj yeem hu tau thaum kos duab. daim duab PCB.

PCB yog qhov txawv raws li txoj kev teeb tsa. Nws tuaj yeem muab faib ua thaj chaw, cov cuab yeej teeb tsa, cov cuab yeej tshwj xeeb (cov cuab yeej hauv dej)

5. Silk print-Los ntawm lub npe, txoj cai?
Tom qab tsim lub PCB, thaum kawg ntawm cov khoom tiav, lub logo ntawm lub studio, qhov kev txaus siab ntawm kev txaus siab. Tau kawg, lub luag haujlwm tseem ceeb ntawm kev luam ntawv txhob lo lo ntxhuav yog los qhia cov khoom siv sib xyaw ua ke .PCB tsim. Koj tuaj yeem siv daim ntawv A4. Luam tawm thiab muab cov khoom siv los saib seb puas muaj lub hau npog, seb qhov loj npaum li cas yog haum. Hom logo yog:
R (Resistance) tsis kam
U (UNIT) chav tsev module / integrated circuit
C (CAPACITANCE) capacitance
Q peb theem tube
X siv lead ua
6. Xaus lus
Txhua tus neeg siv PCB yuav tsum kawm txog kev tsim khoom ntawm PCB, suav nrog kev tsim cov khoom siv hluav taws xob, Altiumdesign / Protel, welding circuit board, thiab lwm yam. Tej zaum koj yuav tsis tau ua ib lub rooj tsav xwm Circuit Court los ntawm koj tus kheej, tab sis nrog cov kev paub no, koj tuaj yeem ua rau koj sai dua. Paub txog lub voj voog ntawm lub rooj tsavxwm thiab npaj rau kev sau ntawv.