Oscillator HA7210 (CB22402E)

This circuit is from an old documentation and can be used to generate signals in different frequency bands.

Limited range control (CB7221E)
Suggested by General Electric in 1965 documentation, this circuit controls the current at a load...
Simple function generator (CB20950E)
Found in Popular Electronics from the 1980s, this circuit uses two operational amplifiers from...
Stereo preamplifier (CB20654E)
We found this circuit in a Hands-on Electronics from 1985. The circuit is based on common...