Syntax: .include <filename>
This directive includes the named file as if that file had been typed into the netlist instead of the .include command. This is useful for including libraries of models or subcircuits.
An absolute path name may be entered for the filename. Otherwise LTspice looks first in the directory <LTspiceIV> \lib\sub and then in the directory that contains the calling netlist, where <LTspiceIV> is the directory containing the scad3.exe executable, typically installed as C:\Program Files\LTC\LTspiceIV.
No file name extension is assumed. You must use ".inc myfile.lib" not ".inc myfile" if the file is called "myfile.lib"
It is possible to specify a url of the following form as a file name:
.inc http://www.company.com/models/library.lib
The file "library.lib" will be http-transferred to the circuit directory and included. For subsequence simulations, in the interest of avoiding downloading the file each time you run the simulation, you can edit the .inc statement to
.inc library.lib
Note that if the url you specify doesn't exist, most web servers don't return an error, but return a html web page to be displayed in your web browser that explains the error. LTspice can't always read these pages as error conditions so you may get some cryptic error message when the simulation tries to proceed with the included html language error page included in the simulation as valid SPICE syntax.
If the http- transferred url is a .pdf file, the simulation will abort after the download. For example the following deck will download this manual as a .pdf file:
* Dummy simulation to download the help file.
* The simulation will abort with an error, but
* you'll be left with the file scad3.pdf in the
* same directory containing the netlist.
.inc http://ltspice.linear.com/software/scad3.pdf
.end