Manny brings up a great option. Even if you have no need for actual
circuit simulation. I can recommend SiMterix, LTSpice and MicroSim as
totally free programs that will allow you to create schematics, however,
I'm not so sure that any of those offer open/closed switch symbols.
From a purely graphic approach,"DIA" is a free alternative to Visio and
allows structured drawings with some pre-defined electrical elements:
Fare well,
Brent DeWitt, AB1LF
On 5/20/2021 1:42 PM, Manny Barron wrote:
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
<mailto: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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