Homepage  >  中文版
Contacts
Tel:86-755-83416111
Fax:86-755-83416961
E-mail:sales@szektech.com
Add: Building 3,No.3,West Area,Shangxue Technology City,Bantian,Longgang District,Shenzhen,China
  • Support
  • PCB power line layout considerations
     
    Date :2017-7-26

     

    The reasonable power line direction can prevent the circuit from producing harmful coupling through the power supply, and plays an important role in restraining interference.


    Wiring should pay attention to the following points:
    (1) the power supply line in the board can be distributed according to the distribution of the circuit in each part of the board, and the same as that of the ground wire.
    (2) for the internal power supply of each unit circuit, the direction of no forward power supply should be taken, and the filter capacitor of the unit is arranged near the final stage. If there are some circuits with higher operating current, not the final stage, the filter electrolytic capacitor can be placed on the higher level of the current. The direction of power supply shall be laid from the front and back of this stage.
    (3) when a multi-stage series decoupling circuit is used in power supply, the direction of power supply shall be arranged according to the sequence of the series connection. Do not change serial order or change into multi-stage parallel decoupling.
    (4) for some main current parts, the test gap should be left on the printed wires, usually sealed with solder, and heated with a soldering iron.
    (5) the line of each board and the main power supply can be taken as much as possible. It should not be distributed by a single power line.
    (6) the total power supply refers to the connection between the power supply and the circuit load. It is only one point. The overall location should be reasonable, in the regulated power supply, do not make the AC pulsating current flow through the DC and sampling circuits.

     

  • Tel:86-755-83416111   Fax:86-755-83416961   E-mail:sales@szektech.com   sitemap
  • Copyright 2014 © E-Tech (Shenzhen) Technology Ltd. All Rights Reserved