Re: LT spice params

On Tue, 12 May 2009 12:49:20 -0700, Robert Baer
<robertbaer@xxxxxxxxxxxx> wrote:

John Larkin wrote:


If I want to set Gmin, Abstol, or other LT Spice parameters, and have
them travel with a circuit model, how can I do this? Is there some
text thing I can include on a particular schematic that will set these
params for Spice? The LT Spice Simulation/Control Panel/Spice window
indicates that these settings are not inherently carried across
program invocations. Gmin of 1e-12 is just too leaky!

John


Use .PARAM or better yet .OPTIONS ??

Turns out you click the funny little letter icon, upper-right, and
then type

..OPTION Gmin=1e-18

Plop the resulting string somewhere on your schematic. That makes the
diodes work much better.


This shows up in the ascii netlist file as stuff like...

TEXT -600 -8 Left 0 !.option Gmin=1e-18
TEXT -608 32 Left 0 !.option abstol=1e-18
TEXT -608 72 Left 0 !.option chgtol=1e-18

John


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