{"id":4212,"date":"2025-10-28T07:56:54","date_gmt":"2025-10-28T07:56:54","guid":{"rendered":"https:\/\/flj-pcb.com\/?p=4212"},"modified":"2025-10-28T07:59:30","modified_gmt":"2025-10-28T07:59:30","slug":"what-you-need-to-know-to-design-your-pcb","status":"publish","type":"post","link":"https:\/\/flj-pcb.com\/da\/what-you-need-to-know-to-design-your-pcb\/","title":{"rendered":"Hvad du skal vide for at designe dit printkort"},"content":{"rendered":"

PCB-design er baseret p\u00e5 kredsl\u00f8bsdiagrammet for at realisere de funktioner, som kredsl\u00f8bsdesigneren har brug for. PCB-design<\/a> er et meget teknisk arbejde, og det kr\u00e6ver mange \u00e5rs erfaringsopsamling. F\u00f8lgende printkortproducenter har opsummeret flere almindelige problemer i PCB-kredsl\u00f8bsdesign til din reference.<\/p>\n\n\n\n

For det f\u00f8rste. Overlapning af puder<\/h2>\n\n\n\n
    \n
  1. Overlapningen af puderne (undtagen overflademonterede puder) betyder overlapning af hullerne. Under boreprocessen vil boret blive \u00f8delagt p\u00e5 grund af flere boringer p\u00e5 samme sted, hvilket resulterer i skader p\u00e5 hullerne.<\/li>\n\n\n\n
  2. To huller i flerlagspladen overlapper hinanden. For eksempel er det ene hul en isolationsskive, og det andet hul er en forbindelsespude (blomsterpude), s\u00e5 filmen vil fremst\u00e5 som en isolationsskive efter at have trukket filmen, hvilket resulterer i skrot.<\/li>\n<\/ol>\n\n\n\n

    For det andet. Misbrug af det grafiske lag<\/h2>\n\n\n\n
      \n
    1. Der blev lavet nogle ubrugelige forbindelser p\u00e5 nogle grafiklag. Oprindeligt var det et kort med fire lag, men det blev designet med mere end fem lag ledninger, hvilket gav anledning til misforst\u00e5elser.<\/li>\n\n\n\n
    2. Spar problemer under designet. Tag Protel-softwaren som eksempel for at tegne linjerne p\u00e5 hvert lag med Board-laget, og brug Board-laget til at markere linjerne. P\u00e5 denne m\u00e5de udelades Board-laget, n\u00e5r der udf\u00f8res lette tegningsdata, fordi det ikke er valgt. Forbindelsen er brudt, eller den kan v\u00e6re kortsluttet p\u00e5 grund af valget af markeringslinjen i Board-laget, s\u00e5 grafiklagets integritet og klarhed opretholdes under designet.<\/li>\n\n\n\n
    3. Overtr\u00e6delse af konventionelt design, s\u00e5som komponentoverfladedesign i det nederste lag og svejseoverfladedesign i det \u00f8verste, hvilket medf\u00f8rer ulemper.<\/li>\n<\/ol>\n\n\n\n

      Den tredje. Den tilf\u00e6ldige placering af tegn<\/h2>\n\n\n\n
        \n
      1. SMD-loddepladen p\u00e5 tegnd\u00e6kslet giver problemer med kontinuitetstesten af printpladen og lodningen af komponenterne.<\/li>\n\n\n\n
      2. Tegndesignet er for lille, hvilket resulterer i problemer med serigrafi, og for stort vil f\u00e5 tegnene til at overlappe hinanden og v\u00e6re sv\u00e6re at skelne.<\/li>\n<\/ol>\n\n\n\n

        For det fjerde. Indstillingen af den enkeltsidede pad-\u00e5bning<\/h2>\n\n\n\n
          \n
        1. Enkeltsidede puder bores normalt ikke. Hvis boringen skal markeres, skal hullets diameter designes til at v\u00e6re nul. Hvis den numeriske v\u00e6rdi er designet, vises hullets koordinater p\u00e5 denne position, n\u00e5r boredataene genereres, og der er et problem.<\/li>\n\n\n\n
        2. Enkeltsidede puder skal m\u00e6rkes specielt, hvis de bores.<\/li>\n<\/ol>\n\n\n\n

          Fem. Brug Filler Blocks til at tegne puder<\/h2>\n\n\n\n

          Tegning af pads med udfyldningsblokke kan best\u00e5 DRC-inspektionen, n\u00e5r man designer kredsl\u00f8bet, men det er ikke godt til forarbejdning. Derfor kan lignende pads ikke direkte generere loddemaskedata. N\u00e5r loddemasken p\u00e5f\u00f8res, vil omr\u00e5det med udfyldningsblokke blive d\u00e6kket af loddemasken, hvilket resulterer i, at det er sv\u00e6rt at lodde enheden.<\/p>\n\n\n\n

          PHILIFAST<\/a> har et professionelt PCB-ingeni\u00f8rteam, der giver nyttige tekniske forslag til at optimere dit design.<\/p>\n\n\n\n

          <\/p>","protected":false},"excerpt":{"rendered":"

          PCB design is based on the circuit schematic diagram to realize the functions required by the circuit designer. PCB design 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design is based on the circuit schematic diagram to realize the functions required by the circuit designer. 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