LT Spice Subcircuit Problems

Discussion in 'General Electronics Chat' started by newbie217, Sep 29, 2011.

  1. newbie217

    Thread Starter Active Member

    Apr 12, 2009
    52
    0
    Hello,

    I've read the FAQ, but still can't get a LM555 subcircuit to run properly.

    I've copied the symbol to folder:
    C:\Program Files\LTC\LTspiceIV\lib\sym\mylib\LM555.asy


    If I copy the subcircuit into the folder:
    C:\Program Files\LTC\LTspiceIV\lib\sub\LM555.sub


    LTSPICE can find the subcircuit and execute properly.

    If I relocate the subcircuit to folder:
    C:\Program Files\LTC\LTspiceIV\lib\sub\mylib\LM555.sub

    The subcircuit can no longer be found. I've made sure to include the Spice line:

    .lib "C:\Program Files\LTC\LTspiceIV\lib\sub\mylib\LM555.sub"

    I also tried saving the LM555.sub into file LM555.lib, but no luck either.

    What am I doing wrong?
     
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    You did it right, here:
    You'll save yourself a lot of trouble if you just keep your .sub and .lib files in the C:\Program Files\LTC\LTspiceIV\lib\sub directory. The .asy files you can put in various subdirectories, but I suggest pretty much sticking with the established directory structure - otherwise, if you're swapping .asc files around with other people for troubleshooting or whatever, you can wind up having problems loading the symbols.
     
    newbie217 likes this.
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