[sdiy] Circuit Simulators

[sleepy_dog at gmx.de]

another +1 for LTspice.

I am not known to be reluctant to complain about UIs,
but even though, when getting into LTspice, realizing one quirk after
another - none of them were all that bad.
The basic components like R,C,L exactly on those keys, D for diode, G
for ground, intuitive enough. Then a few F keys you need to remember to
switch between editing modes (move, clone, cut, create net label, draw
connections - which is probably the funniest part: no auto re-adjustment
of connections to look neat if you move parts).
Pick complex devices from the menu. That's it for the most part, to do a
lot of stuff. Then there are SPICE directives for type of analysis and
sweeping parameters etc.
Finding of 3rd party models and importing them I found a bit fumbly at
times, there are different ways that can be done.

I especially like the feature of exporting wave files from signals your
circuit creates - or importing wave files and have them impact your
circuit, as a voltage source (I remember there was a fixed amplitude
level one needs to take into account, a bit inconvenient / wonder why
they didn't add a scaler parameter, or maybe I overlooked it).
These input wave files do not have to be audio. You can "abuse" them to
be any voltage levels and their alterations as you please, to create
more complex voltage level patterns than the LTspice native voltage
sources otherwise would, to test stuff.

> +1 for LTspice.
>
> Good library, very active community, and conversion tools for other libs.
>
> I run the Win vers on VirtualBox tho on MacOS as Mac version is horrid.
>
> Regards,
> JPS
>
> On Sat, 24 Oct 2020 at 6:54 pm, Tom Wiltshire <tom at electricdruid.net
> <mailto:tom at electricdruid.net>> wrote:
>
>     I use LTspice pretty heavily. It’s also free. The interface is
>     bizarre if you’re charitable, plain dreadful if you’re not, but it
>     works well.
>
>     It’s great for plotting frequency responses, and I often use the
>     parametric features too - so you can see what happens when you
>     twiddle a pot.
>
>     Like David, these days I tend to go from simulator to strip board
>     since I’m reasonably sure the thing is going to work, and any
>     final changes or adjustments are done on a more-solid strip board
>     prototype.
>
>     Tom
>
>     ==================
>            Electric Druid
>     Synth & Stompbox DIY
>     ==================
>
>
>
>     > On 24 Oct 2020, at 02:03, Shawn Rakestraw
>     <shawnrakestraw at gmail.com <mailto:shawnrakestraw at gmail.com>> wrote:
>     >
>     > I'll keep this quick and to the point. I have used a simple web
>     based circuit simulator for a while because I have never learned
>     how to use proper simulators like spice or whatever.
>     >
>     > As far as audio / synth use goes, is there a good resource or
>     tutorial that covers how to setup and use a simulator? Do any of
>     you simulate rather than breadboard?
>     >
>     > Thanks for any advice.
>     >
>     > - Shawn
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