Thaum nws tuaj PCB tsim, qhov txwv tsim los ntawm lub peev xwm tam sim no ntawm PCB thaiv yog qhov tseem ceeb.

Lub peev xwm tam sim no ntawm txoj kab hluav taws xob ntawm PCB tau txiav txim siab los ntawm qhov tsis xws li qhov dav ntawm cov xov hlau, cov tuab ntawm cov thaiv, qhov siab tshaj qhov xav tau kom sov, txawm hais tias cov kab hluav taws xob sab hauv lossis sab nraud, thiab seb nws tau npog nrog qhov tsis kam tiv thaiv.

Hauv kab lus no, peb yuav tham txog cov hauv qab no:

ib tug PCB kab dav yog dab tsi?

Cov xov hluav taws xob PCB lossis cov tooj liab tooj liab ntawm PCB, tuaj yeem ua lub teeb liab ntawm PCB nto. The etching leaves a narrow section of copper foil, and the current flowing through the copper wire generates a lot of heat. Ua kom raug ntsuas cov kab hluav taws xob PCB dav thiab tuab pab txo qis kev tsim cua sov ntawm lub rooj tsavxwm. Cov kab dav dav dua, qis dua qhov tsis kam rau tam sim no, thiab tsawg dua cov cua sov. PCB txoj kab dav yog kab rov tav thiab tuab yog qhov dav dav.

PCB tsim ib txwm pib nrog txoj kab dav dav. Txawm li cas los xij, txoj kab dav dav no tsis yog ib txwm tsim nyog rau qhov xav tau PCB. Qhov no yog vim tias koj yuav tsum xav txog qhov muaj peev xwm nqa tam sim no ntawm cov thaiv los txiav txim siab qhov dav thaiv.

Thaum txiav txim siab qhov dav kab dav, xav txog ntau yam:

1. Tooj tooj liab tuab – Cov tuab tuab tuab yog qhov tuab tuab thaiv qhov tseeb ntawm PCB. Lub tooj liab tuab tuab rau PCBS tam sim no yog 1 ounce (35 micron) txog 2 ounce (70 micron).

2. Hla ntu ntu ntawm tus neeg xyuas pib-Kom muaj lub zog siab dua ntawm PCB, nws yog qhov tsim nyog kom muaj thaj tsam loj dua ntawm tus neeg xyuas pib, uas yog sib piv rau qhov dav ntawm tus neeg xyuas pib.

3. Qhov chaw ntawm kab – hauv qab lossis saum toj lossis sab hauv.

ob Yuav tsim PCB tam sim no siab li cas?

Digital circuits, RF circuits and power circuits mainly process or transmit low power signals. The copper in these circuits weighs 1-2Oz and carries a current of 1A or 2A. Hauv qee daim ntawv thov, xws li kev tswj lub cev muaj zog, xav tau tam sim no txog 50A, uas yuav xav tau tooj liab ntau dua ntawm PCB thiab ntau txoj kab dav.

Txoj hauv kev tsim qauv rau qhov xav tau tam sim no yog txhawm rau txuas cov tooj liab thiab nce qhov tuab ntawm cov thaiv mus rau 2OZ. Qhov no yuav ua rau kom muaj chaw seem ntawm pawg thawj coj lossis nce tus lej ntawm cov txheej txheem ntawm PCB.

3. Cov txheej txheem txheej txheem txheej txheem PCB tam sim no siab:

Reduce the length of high-current cabling

Cov xov hlau ntev dua muaj kev tiv thaiv siab dua thiab nqa tam sim no ntau dua, ua rau lub zog poob ntau dua. Vim tias lub zog poob ua rau muaj cua sov, lub rooj sib tham hauv lub neej tau luv dua.

Xam cov kab dav thaum tsim nyog ntsuas kub nce thiab poob

Txoj kab dav yog qhov ua haujlwm ntawm cov hloov pauv xws li kev tiv thaiv thiab qhov tam sim no ntws los ntawm nws thiab qhov ntsuas kub tso cai. Feem ntau, qhov kub nce ntawm 10 ℃ raug tso cai ntawm qhov kub ib puag ncig siab tshaj 25 ℃. If the material and design of the plate allow, even a temperature rise of 20°C can be allowed.

Rho tawm cov khoom siv rhiab heev los ntawm ib puag ncig kub

Qee yam khoom siv hluav taws xob, xws li cov ntsuas hluav taws xob, cov hloov pauv analog-rau-digital thiab cov tshuab ua haujlwm tau zoo, hloov pauv qhov kub thiab txias. Thaum cov khoom no raug rhaub, lawv lub teeb liab hloov pauv.

Cov phaj siab tam sim no tau paub los ua kom sov, yog li cov khoom yuav tsum tau khaws cia kom deb ntawm qhov kub ib puag ncig. Koj tuaj yeem ua qhov no los ntawm kev ua qhov hauv lub rooj tsavxwm thiab muab cov cua sov tso tawm.

Tshem cov txheej txheem tiv thaiv kab laug sab

Txhawm rau kom muaj peev xwm ntws tam sim no ntawm cov xaim, txheej txheej txheej txheej tuaj yeem raug tshem tawm thiab tooj liab hauv qab raug. Cov laug ntxiv tuaj yeem txuas ntxiv rau cov xaim, uas yuav ua rau cov hlau tuab thiab txo tus nqi ua haujlwm. Qhov no yuav tso cai tam sim no ntau ntxiv los ntawm cov xaim tsis tas ua kom dav dav dav lossis ntxiv tooj liab tuab ntxiv.

Cov txheej sab hauv yog siv rau cov kab hluav taws xob tam sim no

Yog tias txheej txheej sab nrauv ntawm PCB tsis muaj chaw txaus rau cov kab hluav taws xob tuab, cov hlua tuaj yeem ua rau sab hauv sab hauv ntawm PCB. Tom ntej no, koj tuaj yeem siv qhov sib txuas los ntawm lub qhov rau sab nrauv lub cuab yeej siv hluav taws xob tam sim no.

Ntxiv tooj liab rau qhov siab dua tam sim no

Rau cov tsheb hluav taws xob thiab cov hloov hluav taws xob muaj zog tam sim no tshaj 100A, cov tooj liab yuav tsis yog txoj hauv kev zoo tshaj plaws rau xa lub zog thiab cov cim. Hauv qhov no, koj tuaj yeem siv tooj liab tuav uas tuaj yeem muab txuas rau PCB ncoo. Cov tooj tooj liab yog tuab dua li cov hlau thiab tuaj yeem nqa cov dej loj raws li qhov xav tau yam tsis muaj teeb meem cua sov.

Siv hla qhov xaum kom nqa ntau cov xov hlau hla ntau txheej ntawm qhov siab tam sim no

Thaum cov cabling tsis tuaj yeem nqa qhov xav tau tam sim no hauv ib txheej, cov cabling tuaj yeem hla hla ntau txheej thiab kho los ntawm kev sib txuas cov txheej ua ke. Nyob rau hauv rooj plaub ntawm tib lub tuab ntawm ob txheej, qhov no yuav ua rau muaj peev xwm nqa tau tam sim no.

xaus

Muaj ntau yam teeb meem nyuaj hauv kev txiav txim siab lub peev txheej tam sim no. Txawm li cas los xij, PCB tus tsim qauv tuaj yeem tso siab rau kev ntseeg tau ntawm kab tuab tshuab xam zauv los pab tsim lawv cov laug cam kom zoo. Thaum tsim kom muaj kev ntseeg siab thiab ua tau zoo PCBS, kev teeb tsa raug ntawm kab dav thiab muaj peev xwm nqa tau tam sim no tuaj yeem mus ntev.