Malingaliro apangidwe
Mu PCB masanjidwe ndondomeko, kuganizira koyamba ndi kukula kwa PCB.Kenaka, tiyenera kuganizira za zipangizo ndi madera omwe ali ndi zofunikira zokhazikika, monga ngati pali malire a kutalika, malire a m'lifupi ndi nkhonya, malo otsekedwa.Ndiye molingana ndi chizindikiro cha dera ndi kuyenda kwa mphamvu, kuyika patsogolo kwa gawo lililonse la dera, ndipo potsiriza molingana ndi mfundo za mapangidwe a gawo lililonse la dera kuti akwaniritse masanjidwe a zigawo zonse zimagwira ntchito.
Mfundo zoyambirira za kamangidwe
1. Lumikizanani ndi ogwira nawo ntchito kuti akwaniritse zofunikira zapadera mu kapangidwe kake, SI, DFM, DFT, EMC.
2. Malinga ndi chithunzi cha kapangidwe kazinthu, zolumikizira ikani, mabowo okwera, zizindikiro ndi zida zina zomwe ziyenera kukhazikitsidwa, ndikupatsa zida izi mawonekedwe osasunthika ndi kukula kwake.
3. Malinga ndi mawonekedwe a mawonekedwe ndi zofunikira zapadera za zipangizo zina, ikani malo oletsa mawaya oletsedwa ndi malo oletsedwa.
4. Kuganizira mozama za machitidwe a PCB ndi mphamvu zogwirira ntchito kuti musankhe kayendetsedwe ka kayendetsedwe kake (chofunika kwambiri kwa SMT ya mbali imodzi; SMT imodzi + plug-in).
SMT yokhala ndi mbali ziwiri;mbali ziwiri SMT + pulagi-mu), ndipo malinga ndi masanjidwe osiyana processing ndondomeko.
5. Mapangidwe okhudzana ndi zotsatira za kukhazikitsidwa kale, molingana ndi "choyamba chachikulu, kenako chaching'ono, choyamba chovuta, kenako chophweka".
6. masanjidwewo ayesetse kukwaniritsa zofunikira izi: mzere wonsewo ukhale waufupi momwe ungathere, mizere yayifupi kwambiri yolumikizira kiyi;mkulu voteji, mkulu panopa zizindikiro ndi otsika voteji, yaing'ono panopa chizindikiro ofooka chizindikiro kwathunthu osiyana;chizindikiro cha analogi ndi chizindikiro cha digito chosiyana;mkulu pafupipafupi chizindikiro ndi otsika pafupipafupi chizindikiro osiyana;zigawo zikuluzikulu za masitayilo kuti zikhale zokwanira.Pamafunika kukwaniritsa zofunikira za kayeseleledwe ndi kusanthula nthawi, kusintha kwanuko.
7. Magawo omwewo adera momwe ndingathere pogwiritsa ntchito ma symmetrical modular masanjidwe.
8. zoikamo masanjidwe analimbikitsa gululi kwa 50 mil, IC chipangizo masanjidwe, gululi akulimbikitsidwa 25 25 25 25 25 mil.kachulukidwe kachulukidwe ndikwambiri, zida zazing'ono zokwera pamwamba, zoyika pagululi zikulimbikitsidwa zosachepera 5 mil.
Mfundo masanjidwe a zigawo zapadera
1. momwe mungathere kufupikitsa kutalika kwa kulumikizana pakati pa zigawo za FM.Kutengeka zigawo zosokoneza sangakhale pafupi kwambiri wina ndi mzake, yesetsani kuchepetsa magawo awo kugawa ndi kusokoneza maginito amagetsi.
2. chifukwa zotheka kukhalapo apamwamba kuthekera kusiyana pakati pa chipangizo ndi waya, ayenera kuonjezera mtunda pakati pawo kuteteza mwangozi dera lalifupi.Zipangizo zokhala ndi magetsi amphamvu, yesetsani kukonza m'malo omwe anthu sangathe kufikako mosavuta.
3. Kulemera kuposa 15g zigawo zikuluzikulu, ayenera kuwonjezeredwa bulaketi atakhazikika, ndiyeno kuwotcherera.Kwa zigawo zazikulu ndi zolemetsa, zopangira kutentha siziyenera kuikidwa pa PCB, zomwe zimayikidwa m'nyumba zonse ziyenera kuganizira za kutentha kwa kutentha, zipangizo zowononga kutentha ziyenera kukhala kutali ndi zipangizo zopangira kutentha.
4. kwa potentiometers, ma inductor coil osinthika, ma capacitor osinthika, ma switch ang'onoang'ono ndi magawo ena osinthika akuyenera kuganizira zofunikira zamakina, monga malire a kutalika, kukula kwa dzenje, kugwirizanitsa pakati, ndi zina zotero.
5. Pre-malo mabowo PCB malo ndi zosakhazikika bulaketi wotanganidwa ndi udindo.
cheke pambuyo-sanjidwe
M'mapangidwe a PCB, masanjidwe oyenera ndi gawo loyamba pakupambana kwa mapangidwe a PCB, mainjiniya amayenera kuyang'anitsitsa zotsatirazi mukamaliza kukonza.
1. Zolemba za kukula kwa PCB, mawonekedwe a chipangizocho amagwirizana ndi zojambula zamapangidwe, kaya akukwaniritsa zofunikira za PCB kupanga, monga m'mimba mwake wa dzenje, mzere wocheperako.
2. ngati zigawozo zimasokonezana wina ndi mzake m'magawo awiri ndi atatu, komanso ngati zidzasokonezana ndi nyumba yomanga.
3. ngati zigawo zonse zayikidwa.
4. kufunikira kwa plugging pafupipafupi kapena kusintha magawo ndikosavuta kulumikiza ndikusintha.
5. Kodi pali mtunda woyenera pakati pa chipangizo chotenthetsera ndi zigawo zopangira kutentha.
6. Kodi ndi bwino kusintha chipangizo chosinthika ndikusindikiza batani.
7. Kaya malo opangira kutentha kwa kutentha ndi mpweya wosalala.
8. Kaya kutuluka kwa siginecha ndikosalala komanso kulumikizana kwakanthawi kochepa.
9. Kaya vuto losokoneza mzere laganiziridwa.
10. Kodi pulagi, socket ikutsutsana ndi kapangidwe ka makina.
Nthawi yotumiza: Dec-23-2022