docs
Track
Circuits + PCB + RF Engineering
Circuit simulation + PCB design tools and EM/RF analysis resources.
Resources
book
https://www.allaboutcircuits.com/textbook/
interactive
https://circuitverse.org/
docs
http://ngspice.sourceforge.net/docs.html
library
https://github.com/PySpice-org/PySpice
tool
https://openems.de/
tool