Imibono yesakhiwo
Kunqubo yesakhiwo se-PCB, ukucatshangelwa kokuqala ubukhulu be-PCB.Okulandelayo, kufanele sicabangele izisetshenziswa nezindawo ezinezidingo zokuma kwesakhiwo, njengokuthi ingabe kunomkhawulo wobude, umkhawulo wobubanzi kanye nokubhoboza, izindawo ezifakiwe.Bese ngokusho kwesignali yesifunda nokugeleza kwamandla, ukuhlelwa kwangaphambili kwemodyuli ngayinye yesifunda, futhi ekugcineni ngokuvumelana nezimiso zokuklama zemodyuli ngayinye yesifunda ukuze kufezeke ukuhlelwa kwazo zonke izingxenye zokusebenza.
Izimiso eziyisisekelo zesakhiwo
1. Xhumana nezisebenzi ezifanele ukuze uhlangabezane nezidingo ezikhethekile ngesakhiwo, i-SI, i-DFM, i-DFT, i-EMC.
2. Ngokomdwebo wesici sesakhiwo, beka izixhumi, izimbobo ezikhwezwayo, izinkomba nezinye izisetshenziswa ezidinga ukubekwa, futhi zinikeze lezi zisetshenziswa izibaluli ezingenakunyakaziswa kanye nobukhulu.
3. Ngokusho komdwebo wesici sesakhiwo kanye nezidingo ezikhethekile zamadivayisi athile, setha indawo yezintambo ezingavunyelwe kanye nendawo yesakhiwo evinjelwe.
4. Ukucatshangelwa okuphelele kokusebenza kwe-PCB nokusebenza kahle kokucubungula ukuze ukhethe ukugeleza kokucubungula inqubo (okubalulekile ku-SMT yohlangothi olulodwa; i-SMT yohlangothi olulodwa + i-plug-in.
I-SMT enamacala amabili;i-plug-in ye-SMT + enezinhlangothi ezimbili), futhi ngokuya ngesakhiwo sezimpawu zenqubo yokucubungula ehlukene.
5. Isakhiwo ngokubhekisela emiphumeleni yesakhiwo sangaphambilini, ngokomthetho wesakhiwo "owokuqala omkhulu, bese uncane, okokuqala ube nzima, bese ulula".
6. Isakhiwo kufanele sizame ukuhlangabezana nalezi zidingo ezilandelayo: ulayini ophelele ube mfushane ngangokunokwenzeka, imigqa yesignali eyinhloko emifushane kakhulu;I-voltage ephezulu, amasignali amanje aphezulu kanye ne-voltage ephansi, isignali encane yamanje ebuthakathaka ihluke ngokuphelele;isignali ye-analog nesignali yedijithali ihlukene;isignali yefrikhwensi ephezulu kanye nesignali yefrikhwensi ephansi ihlukene;izingxenye zefrikhwensi ephezulu yesikhala ukuze zanele.Esimweni sokuhlangabezana nezidingo zokulingisa nokuhlaziya isikhathi, ukulungiswa kwendawo.
7. Izingxenye zesekhethi ezifanayo ngangokunokwenzeka kusetshenziswa ukwakheka kwe-symmetrical modular.
8. izilungiselelo zesakhiwo ezinconyiwe igridi engu-50 mil, isakhiwo sedivayisi ye-IC, igridi enconyelwe 25 25 25 25 25 mil.ukuminyana kwesakhiwo kuphezulu, amadivayisi amancane okukhweza phezulu, izilungiselelo zegridi zinconyiwe zingabi ngaphansi kuka-5 mil.
Isimiso sokuhlela sezingxenye ezikhethekile
1. ngangokunokwenzeka ukunciphisa ubude bokuxhumana phakathi kwezingxenye ze-FM.Ingase ithinteke ezingxenyeni zokuphazanyiswa ayikwazi ukusondelana kakhulu, zama ukunciphisa imingcele yokusabalalisa nokuphazanyiswa kwe-electromagnetic mutual.
2. ukuze kube khona umehluko omkhulu ongaba khona phakathi kwedivayisi nocingo, kufanele kukhuphule ibanga phakathi kwakho ukuze kuvinjelwe ukujikeleza okufushane ngengozi.Amadivayisi anogesi onamandla, zama ukuhlela ezindaweni ezingafinyeleleki kalula kubantu.
3. Isisindo ngaphezu 15g izingxenye, kufanele wanezela ubakaki fixed, bese Welding.Ezinkulu futhi ezinzima, izingxenye ezikhiqiza ukushisa akufanele zifakwe ku-PCB, ezifakwe kuzo zonke izindlu kufanele zicabangele indaba yokukhishwa kokushisa, amadivaysi azwela ukushisa kufanele abe kude namadivayisi akhiqiza ukushisa.
4. kuma-potentiometer, amakhoyili e-inductor alungisekayo, ama-variable capacitor, ama-micro switch kanye nezinye izakhiwo zezingxenye ezilungisekayo kufanele zicabangele izidingo zesakhiwo somshini, njengemikhawulo yobude, usayizi wembobo, izixhumanisi ezimaphakathi, njll.
5. Beka ngaphambili izimbobo zokubeka ze-PCB kanye nabakaki abangashintshi abathathwe indawo.
Ukuhlola kwesakhiwo sangemuva
Ekwakhiweni kwe-PCB, ukwakheka okuphusile kuyisinyathelo sokuqala empumelelweni yomklamo we-PCB, onjiniyela badinga ukuhlola ngokucophelela okulandelayo ngemva kokuqedwa kwesakhiwo.
1. Izimpawu zosayizi we-PCB, ukwakheka kwedivayisi kuyahambisana nemidwebo yesakhiwo, noma ngabe ihlangabezana nezidingo zenqubo yokukhiqiza ye-PCB, njengobukhulu obuncane bembobo, ububanzi bomugqa obuncane.
2. ukuthi ngabe izingxenye ziyagxambukela yini endaweni enezinhlangothi ezimbili nezintathu, nokuthi zizophazamisana yini nesakhiwo sezindlu.
3. ngabe izingxenye zibekwe zonke.
4. isidingo sokuxhuma njalo noma ukushintshwa kwezingxenye kulula ukuxhuma nokufaka esikhundleni.
5. Ingabe likhona ibanga elifanelekile phakathi kwedivayisi eshisayo nezingxenye ezikhiqiza ukushisa.
6. Ingabe kulula ukulungisa idivayisi elungisekayo bese ucindezela inkinobho.
7. Ukuthi indawo yokufakwa kwe-heater sink iwumoya obushelelezi.
8. Ukuthi ukugeleza kwesignali kubushelelezi kanye nokuxhumana okufushane kakhulu.
9. Ukuthi inkinga yokuphazamiseka komugqa icutshunguliwe yini.
10. Ingabe ipulaki, isokhethi iyaphikisana nomklamo wemishini.
Isikhathi sokuthumela: Dec-23-2022