A useful reference publication of electronics symbols from CIE

I happened upon this excellent reference while searching for a very, very, very simple CAD program (which continues to elude me).
I would appreciate your suggestions if you know of one.
I run Linux Mint Mate 64 bit, so something that works in a recent Ubuntu distro might be OK. M$ Windows apps need not apply.
Thanks...
Here is the electronic symbols publication URL:

https://www.cie-wc.edu/Electronics_Symbols_Handbook_CIE.pdf
Later, DAAB
 
Simple CAD programs are hard because it very to do because . But you can use DIA they have electronic symbol among others . Another is FREECAD but it is "Deep". LibreCAD / QCAD they are more 2D CAD drawing. But if you want to make PCB for Electronic you should learn your self KICAD it's awesome
All run on Linux you will find them in your "Mint" Repo. 🙂
 
Interesting - I now know the symbol for a tunable magnetron. Should I need it... Some very dated parts in their though like magnetic cores. No opamp symbol - no differential amp/comparator at all in fact !! Rather confused by their variable electrolytic caps too - how's that work? The microwave "mode transducer" is rather mystifying. However the logic symbols seem more modern to my eyes.

Not sure I like their inductor symbol, also I dislike circles round every diode & transistor, its not conveying any information.

And of course zigzag resistors, I completely rebelled against them once I found the better notation (YMMV), so much more professional looking to use rectangles - you can write the value inside them 🙂

I'd see if you can find open-source graphics in the style of Elektor circuit diagrams, or the Art of Electronics - those would be my two go-to sources of symbol inspiration. Just take the transistors from AoE, and resistors from Elektor for the best of both! [ more seriously if anyone is writing schematic CAD software, please please please have the option for both styles of resistor (and of course default to rectangle!) ]

XKCD had something to say on the matter of schematic symbols it turns out: https://xkcd.com/730/
 
No opamp symbol - no differential amp/comparator at all in fact !! Rather confused by their variable electrolytic caps too

By the cover-style and the contents, 1964-1970 period. Which should include opamps, but mail-order tech schools don't always keep up with the times.
https://www.abebooks.com/servlet/Se...of Electronics&cm_sp=SearchF-_-home-_-Results

I don't see variable electrolytics? You mean the curved electrode? Seems to me that their electros have + and - markings. The curved may be the stator/rotor distinction on a tuner cap.