Integrated regulator (CB7512E)

This circuit was found in a RCA documentation from 1977. The integrated circuit is uncommon today. It is only a reference.

Sawtooth generator (CB21228E)
Found in Popular Electronics from the 90s, this circuit generates signals in a frequency range set to...
6 V power supply with power zener (CB21531E)
This circuit provides 6.3V of output from a 9V input. The circuit was found in a Dutch publication from...
High impedance differential amplifier (CB9837E)
Based on operational amplifiers of the time, this circuit from the 1980s has high input impedance. The...