This circuit was found in a General Electric documentation from 1970. Equivalent transistors can be used. The maximum signal frequency for the indicated components is 250 kHz.
This circuit was obtained from ancient American documentation. The circuit combines a JFET with a...
Applying an operational of the time, this circuit of an old documentation can be elaborated with modern...
Found in an American paper from the 90's, this circuit can be adjusted to pass frequencies above 30 to 300...