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[SOLVED] The relationship between the width and the current.

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greatmarx

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Who can give me some material about the relationship between the width of printed wiring and the current?
An absolute minimum of 15 mils(0.381mm) per Ampere.
The upper sentence is not exact.

Yang...
 

hi yang
i have attached zip file for width and current relationship and impedence calculator. This is owned by "Wind River Systems"

regards
SA
 

Attachments

  • TraceCurrentNIMpedance.zip
    60.8 KB · Views: 138
Thank you very much.
Do you have theory or articles about it?
Yang...
 

hi
check this
---http://www.referencedesigner.com/cal/cal_06.php]PCB Trace Width Calculator
---http://www.alternatezone.com/electronics/files/PCBDesignTutorialRevA.pdf
regards
SA
 

For example:There is a power wire in the printed PCB wiring,I know the line width,line length,the crrent,the thickness.How can I calculate the impendance of the wire？
regards
Yang...
 

hi yang,
i have already attached impedance calculator in last message, however see also attached software

regards
SA
 

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  • C4Calculator.zip
    161.1 KB · Views: 137
45_1290774608.jpg
 
greatmarx said:
For example:There is a power wire in the printed PCB wiring,I know the line width,line length,the crrent,the thickness.How can I calculate the impendance of the wire？
regards
Yang...
Click to expand...
I'm not good at English. Maybe my decription is not suitable.
For at one port the voltage is 4.2V, After a wire of 1 inch,how can I calculate value of the voltage.
If the R of wire is 0.4ohm and the current is 1A,the voltage is:4.2-1*0.4=3.8V.
How can I get the 0.4ohm.
Is there any theory and material?
regard
Yang...
 

Who can give me some other advices for the question above?
regard
Yang...
 

Search for the "Saturn PCB toolkit" - this will calculate it all for you, widths and voltage drop etc.
 
Thank you.
This software is suitable for me.
regard
Yang...
 

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