Integrated regulator (CB7512E)

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

Tape deck power supply (CB9231E)
This circuit was found in a Hands On Electronics from the 90s. It is intended to supply old tape...
500 to 500 kHz Wobbulator (CB13846E)
This circuit generates signals for adjustments in FIs of 10.7 MHz. The transistors can be BC548 or...
Fast Flip Flop (CB6810E)
Found in Ferranti's 1969 documentation this circuit has a maximum operating frequency of 7.5 MHz....