Ib qho xuas tes ua luam tawm Circuit Board (PCB) feem ntau siv hauv neeg hlau thiab khoom siv hluav taws xob feem ntau. Nov yog cov theem pib los tsim lub rooj tsav xwm hauv Circuit.
Cov kauj ruam
Ntu 1 ntawm 3: Tsim
Kauj Ruam 1. Xaiv koj txoj hauv kev los sau cov txheej txheem txheej txheem ntawm daim phiaj tooj liab
Koj tuaj yeem ua qhov no los ntawm kev siv Sharpie rau ib qho yooj yim Circuit Court lossis luam tawm ntawm lub khoos phis tawj. Tsuas yog ib qho ntawm cov no xav tau, yog li xaiv raws li koj nyiam.
Kauj Ruam 2. Kos daim duab hluav taws xob ntawm ob daim ntawv lossis cov phiaj xwm simulation xws li MultiSim lossis Eagle CAD
Cov txheej txheem yuav tsum muaj cov lus piav qhia ntxaws ntawm txhua ntu, nrog rau yooj yim ua raws kev sib txuas.
Kauj Ruam 3. Yog tias siv txoj haujlwm simulation, sim ua kom zoo hauv qhov simulated ib puag ncig
Yog tias tsis siv qhov kev sim sim, sib sau ua ke thiab sim ib lossis ntau qhov qauv ntawm Circuit Court ntawm lub khob cij. Breadboards yog ib qho yooj yim heev rau siv, thiab tso cai rau ib tus los saib cov txiaj ntsig ntawm Circuit hauv lub sijhawm tiag tiag yam tsis tas yuav xav tau cov laug los yog cov cim tas mus li.
Kauj Ruam 4. Ua kom ntseeg tau tias kev ua haujlwm hauv Circuit Court ntawm lub khob cij, lossis hauv kev simulation software
Kauj Ruam 5. Tau txais lub rooj tsav xwm hauv Circuit Court
Cov rooj sib tham hauv Circuit Court yog kwv yees li ib daus las ib leeg, thiab tsuas yog txheej tooj liab hla cov rwb thaiv tsev. Qhov loj me feem ntau yog 3.5 ntiv tes (8.9 cm) los ntawm 5 ntiv tes (12.7 cm). Teeb duab yog yooj yim; txhua yam uas xav tau yog tus cim tsis raug, xws li Sharpie. Tus kav kuj tseem pab tau.
Kauj Ruam 6. Thov luam daim qauv
(Hla cov kauj ruam no yog tias koj tsis siv lub khoos phis tawj siv thiab siv Sharpie txoj hauv kev.) Luam cov qauv tsim tawm los ntawm software lub tshuab luam ntawv. Nco ntsoov tias cov ntawv luam tawm ntawm daim ntawv ci (zoo li cov ntawv hauv cov ntawv xov xwm lossis cais cov ntawv ci).
- Qhib hluav taws xob hlau (tib yam siv rau khaub ncaws).
- Ua tib zoo txiav tawm qhov tsim thiab muab tso rau ntawm lub rooj tsav xwm hauv Circuit.
- Muab cov hlau kub tso rau sab saum toj ntawm lub rooj sib tham Circuit Court txog li 45 vib nas this.
- Coj lub rooj tsav xwm hauv Circuit Court (ceev faj nws kub heev). Ntxuav daim ntawv tawm xws li tus number case dub tau daig rau daim phiaj tooj liab.
Kauj Ruam 7. Xwb:
Kos koj lub voj voog ntawm koj lub rooj tsavxwm nrog Sharpie. Nco ntsoov tias nws nyuaj heev los kos tawm cov qauv tsim hluav taws xob hauv lub neej tiag tiag, tshwj tsis yog nws yooj yim npaum li coj thiab roj teeb.
- Nco ntsoov tias tooj liab tsis tuaj yeem yog nruab nrab ntawm cov khoom sib piv, piv txwv li, yog tias txuas lub LED, yuav tsum muaj qhov sib txawv ntawm tooj liab ntawm cov ntsiab lus zoo thiab tsis zoo ntawm kev sib txuas. Yog tsis muaj qhov sib txawv, hluav taws xob yuav ntws ib puag ncig ntawm LED, tsis yog hla nws. Nco ntsoov cov cai lij choj ntawm hluav taws xob, txhua lub voj voog yuav tsum xaus ntawm qhov tsis zoo lossis hauv av, lossis tsis muaj qhov tam sim no yuav ntws.
- Siv cov kab nyias nyias, tab sis tso tus number case rau tuab, nws yog ib qho tseem ceeb uas tooj liab tau yaj ua ntej tus number case, thiab tias tsis muaj thaj ua rau thaj hauv tus number case nthuav qhia tooj liab.
Ntu 2 ntawm 3: Etching
Kauj Ruam 1. Muab khaub ncaws qub, hnab looj tes thiab tsom iav kev nyab xeeb
Kauj Ruam 2. Ua kom sov ferric chloride, khaws rau hauv lub khob uas tsis xeb thiab kaw nrog lub hau uas tsis xeb, hauv lub thoob dej sov
Tsis txhob kub nws siab tshaj 115 F (46 C) txhawm rau tiv thaiv cov pa phem tawm.
Kauj Ruam 3. Ncuav tsuas yog cov tshuaj ferric chloride txaus los ntim lub tais yas uas muaj cov yas yas nce hauv nws los so lub rooj tsav xwm hauv
Nco ntsoov ua qhov no hauv qhov chaw muaj cua nkag tau zoo.
Kauj Ruam 4. Siv cov yas yas los tso lub rooj tsav xwm hauv lub ntsej muag rau ntawm lub risers hauv lub tais
Tso cai 5 txog 20 feeb, nyob ntawm seb qhov loj me ntawm koj lub rooj tsav xwm hauv Circuit Court, rau qhov tooj liab raug tso tawm ntawm lub rooj tsavxwm thaum nws tshem tawm. Siv cov yas yas txhawm rau ua rau lub rooj tsavxwm thiab lub tais tso rau kom nrawm dua yog tias tsim nyog.
Kauj Ruam 5. Ntxuav tag nrho cov cuab yeej kos thiab lub rooj tsav xwm kom huv nrog dej kom txaus
Kauj Ruam 6. Laum 0.03 nti (0.8 mm) cov khoom ua rau lub qhov hauv koj lub rooj tsav xwm txheej nrog cov hlau siab lossis cov khoom siv carbide xyaum
Hnav cov tsom iav kev nyab xeeb thiab lub npog ntsej muag tiv thaiv koj lub qhov muag thiab lub ntsws thaum koj xyaum.
Kauj Ruam 7. Ntxuav lub rooj tsavxwm kom huv nrog daim ntaub ntub dej thiab dej ntws
Ntxiv koj lub rooj tsav xwm cov khoom siv hluav taws xob thiab muab lawv tso rau hauv qhov chaw.
Ntu 3 ntawm 3: Sib dhos
Kauj Ruam 1. Sau cov cuab yeej hauv qab no:
- Tes tuav lossis Laum Xovxwm
- Ntau yam khoom siv
- Soldering hlau
- Solder
Kauj Ruam 2. Ua ntej drilling, nrhiav txhua txoj haujlwm ntawm cov khoom sib dhos
Cov hmoov tooj liab yog tshuaj lom, hnav daim npog qhov ncauj.
Kauj Ruam 3. Laum hla lub rooj tsavxwm nrog qhov dav me ntsis kom haum rau txhua qhov yuav tsum tau muab tso rau ntawm qhov chaw ntawd
Nco ntsoov tsis txhob ua lub qhov kom dav, lossis cov laug yuav nyuaj heev.
Muaj ob hom kev tiv thaiv: Los ntawm cov khoom sib dhos (muaj ob txhais ceg ntev) thiab SMDs (cov khoom siv saum npoo). Rau SMDs koj tsis tas yuav tho vim tias lawv tau ntim rau saum npoo, tab sis dhau ntawm qhov xav tau qhov nyob rau hauv thiaj li yuav tsum tau muab lawv tso rau hauv. Los ntawm cov khoom sib dhos nkag mus rau lub rooj tsavxwm los ntawm sab nraud ntawm tooj liab
Kauj Ruam 4. Muab cov khoom tso rau ntawm lub rooj tsav xwm hauv Circuit Court ntawm lawv qhov chaw
Maj mam khoov ob txhais ceg ntawm cov khoom tiv thaiv hauv qab ntawm lub rooj tsavxwm, kom tuav ib feem hauv qhov chaw. Xyuas kom tseeb tias cov ntu nrog polarity tau teeb tsa kom raug nrog qhov sib thooj zoo thiab tsis zoo. Txheeb xyuas thiab txheeb xyuas ob qhov chaw ntawm txhua qhov ua ntej yuav siv cov khoom siv.
Kauj Ruam 5. Kev siv tooj liab yog qhov txuj ci uas yuav tsum tau xyaum, txawm hais tias nws tsis yog qhov nyuaj
Thov saib Soldering Electronics rau kev pab.
Kauj Ruam 6. Kuaj koj lub rooj tsav xwm hauv ntej ua ntej txhim kho nws mus rau nws qhov chaw ruaj khov
Siv lub multimeter, yog tias ua tau, txhawm rau txheeb xyuas teeb meem kev sib txuas. Phom De-soldering tuaj yeem siv los hloov me me thiab kho vaj tse.
Lub tswv yim
- Ib txwm hnav khaub ncaws qub, tsom iav kev nyab xeeb, thiab hnab looj tes thaum tuav cov tshuaj ferric chloride lossis lwm yam tshuaj lom neeg rau txheej txheem txheej txheem.
- Nyeem ib phau ntawv yuav ua li cas thiaj tsim cov laug cam los pab koj nkag siab tias yuav tsim qauv thiab tsim ib qho twg.
- Ammonium persulfate yog lwm txoj kev tshawb nrhiav, lossis tshuaj siv rau kev kos, rau ferric chloride.
Lus ceeb toom
- Tsis txhob nchuav cov tshuaj ferric chloride tso rau hauv cov kav hlau lossis khaws nws hauv cov thawv hlau. Ferric chloride corrodes hlau thiab yog tshuaj lom.
- Kev siv tshuaj lom neeg tuaj yeem ua rau khaub ncaws lossis cov kav dej. Khaws ib yam dab tsi uas koj siv nyab xeeb thiab ua tib zoo ceeb toom thaum siv nws.
