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.

Triangular variable generator (CB22371E)
Using the ICM7556, dual CMOS version of the 555, this circuit generates triangular signals from 1 to...
Water Alarm (CB4368E)
We found this circuit in an English magazine from 1976. The magazine no longer exists, but just...
Electronic Dice (CB4366E)
This circuit was obtained from an English magazine from 1977. The magazine no longer exists, but...