Txhawm rau tsim koj tus kheej daim duab schematic, koj yuav tsum nkag siab tsawg kawg ntawm cov khoom siv hluav taws xob. Tsis muaj lub peev xwm los ua tus hlau soldering thiab lub laum, nws tsis yooj yim los tsim koj tus kheej Circuit Court. Koj kuj yuav tsum paub tag nrho cov khoom ntau (Ohm, Microfarad, thiab lwm yam) thiab qee cov lus (voltage, tam sim no, tiv taus). Nws yog qhov tseem ceeb heev kom paub tias yuav ua li cas cov txheej txheem ntawm etching PCB cov laug cam, uas tau siv ob qho tib si hauv kev lag luam thiab hauv xov tooj cua engineering hauv zej zog, tab tom muaj.
Tsim nyog
Daim ntawm PCB, laum, awl, scotch daim kab xev
Cov Lus Qhia
Kauj ruam 1
Raws li qhov loj ntawm kev kos duab, nws yog ib qho tsim nyog los xaiv cov khoom haum ntawm PCB. Txiav ib daig, tom qab ntawv sau ntawm cov npoo. Muab daim ntawv txiav ntawm koj lub cuab yeej rau ntawm lub rooj tsavxwm los ntawm kev muab cov npoo ntawm daim duab kos rau ntawm daim txiag. Tom qab ntawv qhwv cov npoo nrog kab xev lossis ntaub nplaum. Tam sim no koj xav tau ib qho awl rau ntawm qhov cim ua ntej qhov chaw drilling. Tom qab kos tag nrho cov ntsiab lus drilling, txiav daim ntawv Circuit Court los ntawm PCB board. Siv cov laum tob me ntsis, tho qhov kom raws cov cim uas tau ua nrog lub awl.
Kauj ruam 2
Tom qab ntawd koj yuav tsum tau ua cov phiaj xwm, uas yog, taug kev hla lub rooj tsavxwm nrog cov ntawv phaj txhuam kom tshem tawm txhua qhov kev ua phem. Thaum xuab zeb, tsis txhob kov lub npoo ntawm pawg thawj coj uas tau ntxuav lawm - koj tuaj yeem tawm ntawm cov tawv roj los. Yog tias koj tau kov lub rooj tsavxwm nrog koj cov ntiv tes, degrease nws saum npoo nrog cawv (acetone).
Kauj ruam 3
Tom qab kos duab daim duab ntawm lub rooj tsavxwm, koj yuav tsum npaj kev daws teeb meem uas koj lub rooj tsavxwm yuav ua kom tiav. Niaj hnub no, muaj ntau yam zaub mov txawv rau kev npaj ntawm cov kev daws teeb meem no. Nws tag nrho yog nyob ntawm koj xaiv. Etching ntawm cov laug cam yog nqa tawm hauv yas los yog plooj (veneers) cuvettes. Tsis txhob hnov qab tias thaum lub sij hawm etching, PCB pawg thawj coj saib yuav tsum tau muab xa dua ib zaug. Yog tias koj xav kom ceev nrooj etch lub rooj tsavxwm, rhais qhov kev daws rau 50-60 degrees, tab sis tsis muaj ntxiv.
Kauj ruam 4
Thaum lub rooj tsavxwm dai kom zoo, tshem nws tawm thiab cia kom qhuav ib pliag, tom qab ntawv ntuav nws dua kom du ua tej qhov ntxhib.
