11 to 32 MHz amplifier (CB22024E)

Found in an old English publication this circuit uses a dual gate MOSFET. Coils not specified.

Modulated Oscillator 4093 (CB17577E)
Photometer (CB7360E)
This 1964 Electronic Design circuit uses a photo-FET as a sensor. The component is rare today. |...
Limit Detector (CB5163E)
This two-input limit detector was found in an American 1980s documentation. The circuit can be...