From: Xavier Dominica <XD@gnulinux.rocks>
Subject: Linux DIY Electronics
Newsgroups: comp.os.linux.advocacy
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Date: Sun, 13 Oct 2024 15:34:48 +0000
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Anyone interested in electronics?

The global Internet is chock full of avocational electronic sites
with plenty of amazing projects by both amateurs and professional
alike.

Of course, GNU/Linux has the all the tools for pro-grade electronic
work.  For example, check out ngspice:

https://ngspice.sourceforge.io/

Ngspice is superbly accurate, and will rival any commercial ($$$$)
software.

Consider the following coupled oscillator circuit:

https://i.postimg.cc/RCY0Zgnf/cpl-osc.png

By the way, this image was made with GNU/Linux xcircuit:

http://opencircuitdesign.com/xcircuit/

Ngspice can simulate the behavior of this circuit flawlessly,
and will probably beat any commercial ($$$$) software.  Here
is the ngspice script:

Coupled Oscillators
R1 1 0 0.1
L1 1 2 10 
C1 2 0 0.0001
CK 2 3 0.00001
C2 3 0 0.00011
L2 3 4 10.2
R2 4 0 0.1
*
* The .IC line allows an initial voltage to be set on the inductor
* to establish an initial dI/dt through loop 1
* This cannot be done by specifying an initial condition on the inductor itself
* Now the simulation gives the same result as the exact differential eqn
*
..IC V(2)=-1
..tran 0.001 5 0 0.00001 UIC
..end

I have compared the output of ngspice with the exact solution
of the differential equation system and to 16-digit double precision
there is ABSOLUTELY NO FUCKING DIFFERENCE.

A lot of avocational electronic enthusiasts, both amateur and professional,
do use GNU/Linux, but to those that don't here is the message:

Fuck that goddamned commercial ($$$$) crap.  Use GNU/Linux and
shut the fuck up.

Ha, ha, ha, ha, ha, ha, ha, ha, ha, ha, ha, ha, ha!

Xavier Dominica

Master of Science in Electrical Engineering


-- 
Systemd: solving all the problems that you never knew you had.