High impedance stage (CB20564E)

This high input impedance amplifier stage was found in a 1963 documentation. The transistor germanium of the time.

9-Band Current Meter with the CA3140 (CB12315E)
We obtained this circuit from a 1993 documentation. The circuit has 9 current ranges that are...
Crystal MW Tuner (CB628)
This circuit found in Electronics Handbook, Volume XIII 1993 shows a simple configuration of a...
Voltage Monitor MC34064 (CB14536E)
The component used in this circuit is uncommon today. The circuit is from Motorola's 1990 Linear...