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Forum GenCAD reverses polarity of capacitors!
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  • gencad
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GenCAD reverses polarity of capacitors!

Former Member
Former Member over 14 years ago

I have a problem with all three versions of gencad.ulp (including 1.23 and 1.30) where my electrolytic capacitors are reversed in the CAD file compared to the .plc  The assembly house looked at the silk screen (.plc) the first time and everything was fine.  But when I re-ordered boards assembled, they looked at the CAD files and my tantalum caps nearly caught on fire!

 

I tried to decipher the ULP script and could not find any clues as to how the polarity is determined.

 

I am willing to alter my library of packages and devices to make sure this works, but I see that I am using a package that came from one of the "standard" libraries, so I am unclear as to why there is a problem.

 

I also worry that capacitors are not the only parts with incorrect orientation.

 

Note that none of my caps are oriented other than 0, 90, 180 or 270, so this should not be related to the known problems with 45 degree or other rotations.

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  • Richard_H
    0 Richard_H over 14 years ago

    Hi Brian,

     

    this sounds really strange.... Could you please send me the board file by private email. So I could check this and try to get out what the problem is. Please send to support@cadsoft.de

     

    Regards,

    Richard 

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  • Richard_H
    0 Richard_H over 14 years ago

    Hi Brian,

     

    this sounds really strange.... Could you please send me the board file by private email. So I could check this and try to get out what the problem is. Please send to support@cadsoft.de

     

    Regards,

    Richard 

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  • Former Member
    0 Former Member over 14 years ago in reply to Richard_H

    Thanks for the response, Richard. I have sent Eagle files to support@cadsoft.de so that we can hopefully find a solution to this.

    I will respond here with updates as developments proceed.

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  • Richard_H
    0 Richard_H over 14 years ago in reply to Former Member

    Hi Brian,

     

    the email did not arrive yet...... could you please check again?

     

    Thanks,

    Richard

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  • Former Member
    0 Former Member over 14 years ago in reply to Richard_H

    I seem to recall hearing the "email sent" sound a long time after sending that email, so there may have been some kind of delay. It's also possible that the email was redirected because I appended [tss92t-1lt9-tqp] to the Subject.

     

    I just sent another copy and heard it go out right away. Thanks for being so prompt to reply.

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