Gemanium Transistors DC Amplifier (CB14775E)

This instrumentation circuit was found in the 1960 transistor application manual. More modern transistors can be used.

Peak Detector (CB14074E)
This circuit is from the National Semiconductor's Linear Applications Handbook of 1994. The...
Field intensity meter (CB7563E)
Found in a magazine 73 for radio amateurs, in a 90's edition, this circuit uses a general-purpose FET...
RC Amplifier Circuit (CB4249E)
In the figure we have a two-stage amplifier circuit showing the voltages at various points. The...