darwin999
Well-known member
Some versions of Spice is free, it's a software app.
Definitely!
E.g., Analog Devices's LTspice is 100% free and pretty easy to use (the GUI can be a bit painful/awkward at first putting down & connecting the components, but you get used to it pretty quickly). But it's very well documented, and they continue to regularly issuing software updates. .
LTwiki-Wiki for LTspice
I oscillate between breadboarding vs LTspice when futzing around with circuits, using whatever is faster/easier for addressing my question. LTspice is nice because you can get frequency responses and other analytic answers easily (e.g., why is it oscillating, or whatever). Breadboarding is better for when you want to hear the difference.