Solar charger MC34064 (CB14537E)

The integrated circuit used in this charger is not very common today. The circuit is from Motorola's 1990 Linear Databook.

Audio Signal Generator TA7063P (CB1373E)
This signal generator found in Japanese documentation of 1973 uses an unusual integrated circuit...
LED Bargraph (CB10830E)
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...
21 W Integrated Amplifier (CB19330E)
We found this circuit in an old European publication. Integrated circuits are not common today and the...