Hi Brian,

I have found Spice to be useful for scenarios as you describe, in my case
for EMC/EMI analysis. The program is relatively easy to use and changing
circuit elements and re-running an analysis is simple in my opinion.

There are several variations of Spice on the market today, but I'm not sure
if you'll find a free version. Ten years ago I purchased T-Spice (I think
that's the name) for about $500 and it worked great for current in-rush
analysis I had to do.

Recommend doing some web searches on Spice to see what turns up, maybe
you'll find what you're looking for, and who knows, maybe even freeware.

Regards,

Manny Barron




On Thu, May 20, 2021 at 8:53 AM Brian Kunde <bkundew...@gmail.com> wrote:

>
> I am in need of a simple program for creating simple schematics of Safety
> Circuits in a variety of States.  I envision something that I can easily
> insert door switches, relays, button switches, e-stops, fuses, circuit
> breakers, etc..  It would be nice if once laid out, I can simply click to
> change the state of a switch or relay to represent different states of a
> Safety Function.  And then save it off in .pdf format.
>
> Does anyone know of some software that will do this for a low cost or
> maybe Free?  This is something we will use only a few times a year.
>
> Thanks to all in advance for any information.
>
> Regards,
> The Other Brian
>
>
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