Qhov tseem ceeb thiab cov khoom ntawm cov ntawv luam tawm PCBs
Printed Circuit Boards (PCBs) ua lub luag haujlwm tseem ceeb hauv kev siv tshuab hluav taws xob thiab kev ua lag luam. Lawv qhov tseem ceeb yog tus kheej - pom tseeb, thiab txawm tias muaj kev lees paub dav dav hauv kev lag luam, kev tshawb nrhiav tob dua ntawm lawv cov ntsiab lus thiab cov ntsiab lus tseem ceeb tseem ceeb.
◉ Txhais thiab Keeb Kwm Evolution ntawm PCBs
Printed circuit boards (PCBs) yog ib qho tseem ceeb ntawm kev siv tshuab hluav taws xob, hloov cov ntsiab lus ib txwm siv - mus rau - txoj kev xaim hluav taws xob. Lawv tau daws cov teeb meem xws li kev sib txuas tsis sib haum xeeb thiab kev cuam tshuam rau kev ua tsis tiav, ua lub hauv paus ntawm cov khoom siv hluav taws xob niaj hnub no. Ua ntej qhov tshwm sim ntawm PCBs, cov khoom siv hluav taws xob feem ntau siv taw tes - mus rau - taw tes xaim los siv cov haujlwm hauv Circuit Court, ib txoj hauv kev uas muaj ntau qhov tsis zoo. Qhov tshwm sim ntawm PCBs daws cov teeb meem no tau zoo, dhau los ua ib feem tseem ceeb ntawm cov khoom siv hluav taws xob niaj hnub no.
◉ Lub luag haujlwm ntawm PCBs hauv Electronic Technology
PCBs ua tiav kev sib txuas hluav taws xob los ntawm cov kab tooj liab thiab cov ntaub qhwv, txhawb cov teeb liab thiab lub zog xa mus, thiab txhim kho cov kav ntev thiab kev ntseeg siab ntawm cov khoom siv hluav taws xob. Lawv tau them nrog cov kab tooj liab thiab cov ntaub qhwv, uas nws lub luag haujlwm tseem ceeb yog txhawm rau txuas ntau qhov kawg ntawm Circuit Court. Los ntawm cov kab no, lub rooj tsav xwm hauv Circuit Court tsim kev sib txuas hluav taws xob thiab tuaj yeem txuas lub cev sib txawv thaum lub teeb liab thiab lub zog xa mus.
PCB Structure thiab Khoom siv
◉ PCB Txheej Txheej Txheem thiab Cov Khoom Siv
Raws li kev tsim qauv, lub rooj tsav xwm luam tawm (PCB) zoo ib yam li lub ncuav mog qab zib txheej, muaj cov txheej txheem ntawm cov nplaim taws- cov khoom siv tsis zoo xws li FR4, sib koom ua ke los ntawm tshav kub thiab nplaum. FR4 yog ib qho kev xaiv rau nplaim taws- qib khoom siv hluav taws xob, sawv cev rau tus kheej - tua hluav taws ntawm cov khoom siv hluav taws xob hauv kev sib txuas. Cov tub ntxhais nruj no muab qhov tsim nyog rigidity thiab tuab rau PCB.
◉ Kev siv FR4 thiab lwm yam khoom siv
FR4 muab cov qauv nruj haum rau feem ntau daim ntawv thov; Hloov pauv PCBs, ntawm qhov tod tes, yog ua los ntawm siab - cov yas kub (xws li Capton) thiab tsim nyog rau kev siv tshwj xeeb. Txawv thicknesses thiab cov khoom xaiv nyob ntawm seb qhov kev thov tshwj xeeb.
◉ PCB Thickness thiab Copper Foil Layers
1.6mm yog qhov feem ntau siv PCB thickness, haum rau feem ntau cov khoom. Txawm li cas los xij, rau qee cov khoom tshwj xeeb, xws li LilyPad boards thiab Arudino Pro Micro boards, nyias nyias 0.8mm boards raug xaiv. Copper foil txheej yog laminated rau Circuit Court board los ntawm tshav kub thiab nplaum. Nyob rau hauv cov qauv tsim, tooj liab yog siv rau ob sab ntawm substrate nyob rau hauv ob chav -sab PCBs.
◉ Solder Mask thiab Screen Printing
Lub npog ntsej muag tiv thaiv luv luv, thaum lub vijtsam luam ntawv muab kev txheeb xyuas; nws feem ntau yog dawb. Lub npog ntsej muag npog cov txheej tooj liab kom tiv thaiv kev sib tsoo ntawm cov kab tooj liab thiab lwm yam hlau, solder, lossis cov khoom siv hluav taws xob, uas tuaj yeem ua rau luv luv. Lub vijtsam dawb- txheej luam tawm ntxiv cov ntawv, lej, thiab cov cim rau PCB, pab nkag siab thiab sib dhos.
PCB Related Terminology thiab tsim txheej txheem
◉ Cov lus piav qhia dav dav
Hauv PCB tsim thiab kev tsim khoom, qee cov lus siv feem ntau xws li vias, Tsim Txoj Cai Tshawb Xyuas (DRC), thiab laum offset yog qhov tseem ceeb. Cov ntsiab lus no pab kom nkag siab tob txog lub ntiaj teb ntawm PCBs. Cov kev cai tsim kom raug ua kom cov khoom tsim tau zoo thiab siab - cov khoom tiav tiav.
◉ Cov txheej txheem tseem ceeb thiab khoom siv hauv PCB tsim thiab tsim khoom
Cov txheej txheem tseem ceeb thiab cov khoom siv hauv PCB ntau lawm suav nrog cov tshuab luam ntawv luam tawm, rov ua dua, thiab xaiv - thiab - tso tshuab. Cov kauj ruam no yog cov txheej txheem tseem ceeb ntawm PCB tsim thiab tsim khoom thiab yog qhov tseem ceeb.
Printed Circuit Board (PCB) tsim yuav tsum tsis yog tsuas yog kev txawj ntse xwb tab sis kuj xaiv cov cuab yeej tsim nyog thiab xav txog ntau yam. Txawm hais tias tus txheej txheem tsim yuav xav tau kev xyaum tas li, kev paub txog qhov txuj ci no ua rau lub hauv paus ruaj khov rau kev tsim kho tshiab hauv cov khoom siv hluav taws xob. Los ntawm kev tsim koj tus kheej PCBs, koj tuaj yeem txhim kho kev ntseeg tau thiab kav ntev ntawm koj cov khoom, ntxiv dag zog rau kev xyiv fab ntawm kev tsim kho tshiab thiab kev tsim.