Kubva kuPCB Nyika

1. Maitiro Ekufunga Kwakanaka Kuenderana Paunenge Uchirongedza Yakakwira PCB Dhizaini Schematics?

Paunenge uchigadzira yakakwira-Speed ​​PCB matunhu, kutenderwa kuenderana ndeimwe yezvinhu zvekugadzira zvinhu. Iko kukosha kwekusavimbika kune hukama hwenet

Ndokureva kuti, kukosha kwekukundikana kunogona kutsanangurwa mushure mekushandira. Kazhinji, software yekufungidzira haigone kufunga nezve zvimwe zvinokatyamadza mamiriro ezvinhu nekuda kwekugumira kwemuenzaniso wedunhu kana iyo masvomhu algorithm yakashandiswa. Panguva ino, mamwe ma timinators (kubviswa), akadai seyechengeterwa kupesana, anogona kuchengetwa pane schematic diagram. Bvunza mhedzisiro yekuregererwa mukutsvaga kusakwana. Iyo chaiyo mhinduro yedambudziko ndeyekuedza kudzivisa kusarongeka kwekutadza kana wiring.
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2 Chii chiri chikonzero?

Chikonzero chekuparadzanisa Dhijitari / analog gadziro imhosva yeDhijitari inoburitsa ruzha musimba uye pasi kana ichichinja pakati peyakakwirira uye yakaderera zvinhu. Ukuru hweruzha hune hukama nekumhanya kwechiratidzo uye hukuru hwezvino.

Kana iyo nzvimbo yepasi isina kukamurwa uye ruzha rwacho rwakagoverwa neDhijitari Dunhu rakakura uye maAnalog Nzvimbo Ndozviti, iyo isiri-yakakamurwa digital-to-analog nzira inogona kushandiswa chete kana iyo Analog Cortunhu nzvimbo iri kure nedhijitari redunhu rinogadzira ruzha rukuru.

3. Mukumhanyisa-Speed ​​PCB Dhizaini, ndedzipi zvikamu zvinofanirwa kuitwa nemugadziri weEmc naEmi mitemo?

Kazhinji, EMI / EMC Dhizaini inoda kufunga kuti yakapenya uye yakaitwa zvikamu panguva imwe chete. Iyo yekare ndeyekumusoro-soro frequency chikamu (> 30mhz) uye yekupedzisira ndiyo yakaderera frequency chikamu (<30mhz). Saka iwe haugone kungoteerera kune yakakwira frequency uye usaite hanya yakaderera frequency.

A akanaka EMI / EMC Dhizaini Inofanirwa Kufunga Nzvimbo yeChidzidzo, PCB Stack gadziriro, nzira yakakosha yekubatanidza, kusarudzwa kwekusarudzwa, nezvimwewo pakutanga kweiyo mamiriro. Kana pasina gadziriro iri nani zvisati zvaitika, ichagadziriswa mushure. Ichazowana kaviri mhedzisiro nehafu yekuedza uye kuwedzera mutengo.

Semuenzaniso, chinzvimbo cheClock jenareta hazvifanirwe kunge zviri padyo neyekuchinjana sezvinobvira. Yakakwira-kumhanya masaini inofanira kuenda kune iyo yemukati denderedzwa zvakanyanya sezvinobvira. Teerera kune hunhu hwekusatenderwa nehurongwa hwekuita uye kuenderera kweiyo chirevo chekudzikisa kuratidzwa. Chiyero chakasviba chechiratidzo chakasundirwa nechishandiso chinofanira kunge chidiki sezvinobvira kuti uderedze kureba. Nhamba dzinogara, kana dzichisarudza decoupling / bypass capacitors, teerera kune kana mhinduro yayo inogara ichisangana nezvinodiwa kuti uderedze ruzha pamusoro pemagetsi ndege.

Mukuwedzera, teerera kune iyo nzira yekudzoka yeiyo yakakwira-frequency chiratidzo chazvino kuti chigere chechidiki sezvinobvira (kureva kuti, iyo loop isiripo sediki sezvinobvira) kuderedza radiation. Iyo pasi inogona zvakare kukamurwa kudzora huwandu hwehuwandu hwepamusoro-frequency. Chekupedzisira, sarudza zvakanyatsosarudza chassis ivhu pakati pePCB uye dzimba.
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4. Kana uchigadzira PCB Bhodhi, kuitira kuderedza kupindira, iyo ivhu waya inogadzira fomu yakavharwa fomu fomu?

Kana uchigadzira PCB mabhodhi, iyo loop nzvimbo inowanzo kuderedzwa kuitira kuderedza kupindira. Paunenge uchiisa pasi pevhu, hachifanirwe kuiswa muchimiro chakavharwa, asi zviri nani kurongedza muchimiro chebazi, uye nzvimbo yevhu inofanira kuwedzera zvakanyanya sezvinobvira.

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5. Maitiro Ekugadzirisa iyo kufambisa tipology yekuvandudza kutendeka kwechiratidzo?

Rudzi urwu rweNetwork chiratidzo chinonyanya kuomarara, nekuti nekuda kwekusafunga, kwakashata masaini, uye marudzi akasiyana emasaini akasiyana, uye zvakaoma kutaura kuti nderipi rondedzero inobatsira kune chiratidzo. Uye kana uchiita pre-simpulation, iyo topology yekushandisa iri kudiwa kwazvo pane mainjiniya, inoda kunzwisiswa kwemitemo yedunhu, marudzi emiratidzo, uye kunyange kuoma.
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6. Maitiro ekuita neyakagadzirirwa uye wiring yekuve nechokwadi chekugadzikana kwemasaini pamusoro pe100m?

Iyo kiyi yeakakwira-mhanyisa dijitari chiratidzo wiring ndeyekuderedza kukanganiswa kwekutapurika mitsara pane chiratidzo. Naizvozvo, marongero ezvinyorwa zvakakwirira kupfuura 100m zvinoda kuti chiratidzo chekusaratidza kuve chipfupi sezvinobvira. Mumatunhu edhijitari, yakakwirira-mhanya masaini inotsanangurwa nechiratidzo chakamutswa nguva yekunonoka.

Uyezve, mhando dzakasiyana dzemasaini (dzakadai se ttl, gtl, lvttl) ine nzira dzakasiyana dzekuve nechokwadi chekuratidzira mhando.