4066 Latching Touch Switch (CB25241E)

This circuit was found in the November 1989 Radio Electronics magazine. Power supply depends on the application.

12 V Battery Charger (CB17546E)
This type of circuit and with this integrated circuit appears several times on this website. The...
Crystal Controlled Multivibrator (CB23783E)
Using transistors of the time, this circuit was published in Radio Electronics magazine in...
Integrated AM Radio (CB18179E)
The integrated circuit used in this 1982 project is not very common today. It can be adapted to...