Common gate stage (CB7470E)

This circuit for FET was obtained from a 1977 Radio Handbook. The input impedance is 150 ohm. The output is high impedance.

Debouncer (CB4811E)
This is one of the many anti-deboucer circuits the reader can find on this site. The base is TTL...
Wearable Sequential 4017 (CB19146E)
The idea of wearables is not new and does not necessarily need to be implemented with...
High impedance window comparator (CB6091E)
General Electric suggests this circuit in a 1980s documentation. The operational of the time is...