We found this circuit in the 1992 special edition of the Electronics Experimenter Handbook. The components used are still current, many admitting equivalents.
This 8-channel converter was found in a 1970s American documentation. The integrated circuits used are...
This circuit is from a 1995 documentation. Several CMOS integrated circuits are used to produce...
Found in Radio Electronics, this circuit is intended to activate the lighting system of garages...