FMUSER Wirless Transmit Video And Audio More Easier !

[email protected] WhatsApp +8618078869184
Language

    20H principle in PCB design

     

    The principle of 20H is to refer to the distance between the power supply layer relative to the formation of 20h, of course, is also to suppress the edge radiation effect. Electromagnetic interference is radiated outward on the edge of the board. The power layer is contracted so that the electric field is only conducted within the range of the ground layer. Effectively increases EMC. If the inner zone is 20h, 70% of the electric field can be limited to the ground edge; the contraced 100h can be limited to 98% electric field. Be The use of the 20h rules refers to ensuring that the edge of the power plane is 20 times equivalent to the two flat alumina distances than the edge edge of the power supply plane. This rule is often required to be used as a side shot emission technology (inhibiting edge radiation effect) from the side shot of the 0V / power supply planar structure. However, 20h rules provide significant results only under certain specific conditions. These specific conditions include: 1. The rise / fall time of current fluctuations in the power bus is less than 1 ns. 2. The power supply plane is on the internal level of the PCB and is a 0V plane with the upper and lower levels adjacent to it. These two 0V plane extending outwardly to at least 20 times they are each and the power supply plane. 3. On any frequency care, the power bus structure does not generate resonance. 4. The total or more of the PCB is at least 8 or more. Read more

     

     

     

     

    List all Question

    Nickname

    Email

    Questions

    Our other product:

    Professional FM Radio Station Equipment Package

     



     

    Hotel IPTV Solution

     


      Enter email  to get a surprise

      fmuser.org

      es.fmuser.org
      it.fmuser.org
      fr.fmuser.org
      de.fmuser.org
      af.fmuser.org ->Afrikaans
      sq.fmuser.org ->Albanian
      ar.fmuser.org ->Arabic
      hy.fmuser.org ->Armenian
      az.fmuser.org ->Azerbaijani
      eu.fmuser.org ->Basque
      be.fmuser.org ->Belarusian
      bg.fmuser.org ->Bulgarian
      ca.fmuser.org ->Catalan
      zh-CN.fmuser.org ->Chinese (Simplified)
      zh-TW.fmuser.org ->Chinese (Traditional)
      hr.fmuser.org ->Croatian
      cs.fmuser.org ->Czech
      da.fmuser.org ->Danish
      nl.fmuser.org ->Dutch
      et.fmuser.org ->Estonian
      tl.fmuser.org ->Filipino
      fi.fmuser.org ->Finnish
      fr.fmuser.org ->French
      gl.fmuser.org ->Galician
      ka.fmuser.org ->Georgian
      de.fmuser.org ->German
      el.fmuser.org ->Greek
      ht.fmuser.org ->Haitian Creole
      iw.fmuser.org ->Hebrew
      hi.fmuser.org ->Hindi
      hu.fmuser.org ->Hungarian
      is.fmuser.org ->Icelandic
      id.fmuser.org ->Indonesian
      ga.fmuser.org ->Irish
      it.fmuser.org ->Italian
      ja.fmuser.org ->Japanese
      ko.fmuser.org ->Korean
      lv.fmuser.org ->Latvian
      lt.fmuser.org ->Lithuanian
      mk.fmuser.org ->Macedonian
      ms.fmuser.org ->Malay
      mt.fmuser.org ->Maltese
      no.fmuser.org ->Norwegian
      fa.fmuser.org ->Persian
      pl.fmuser.org ->Polish
      pt.fmuser.org ->Portuguese
      ro.fmuser.org ->Romanian
      ru.fmuser.org ->Russian
      sr.fmuser.org ->Serbian
      sk.fmuser.org ->Slovak
      sl.fmuser.org ->Slovenian
      es.fmuser.org ->Spanish
      sw.fmuser.org ->Swahili
      sv.fmuser.org ->Swedish
      th.fmuser.org ->Thai
      tr.fmuser.org ->Turkish
      uk.fmuser.org ->Ukrainian
      ur.fmuser.org ->Urdu
      vi.fmuser.org ->Vietnamese
      cy.fmuser.org ->Welsh
      yi.fmuser.org ->Yiddish

       
  •  

    FMUSER Wirless Transmit Video And Audio More Easier !

  • Contact

    Address:
    No.305 Room HuiLan Building No.273 Huanpu Road Guangzhou China 510620

    E-mail:
    [email protected]

    Tel / WhatApps:
    +8618078869184

  • Categories

  • Newsletter

    FIRST OR FULL NAME

    E-mail

  • paypal solution  Western UnionBank OF China
    E-mail:[email protected]   WhatsApp:+8618078869184   Skype:sky198710021 Chat with me
    Copyright 2006-2020 Powered By www.fmuser.org

    Contact Us