60 Hz Suppressor (CB6738E)

This filter is intended for 60 Hz noise suppression in amplifiers. We found it in American documentation from the 60s.

Model train control (CB7083E)
Suggested by General Electric in an old documentation, this circuit can use modern SCRs and the...
Hartley Oscillator (CB19577E)
The frequency of this oscillator depends on T, which for the audio band can be a common output...
Phase shift oscillator (CB20438E)
This circuit has a common configuration widely used in projects on this site. The transistor is...