We found this circuit in a 1977 factory documentation. The operational amplifiers can be 741 and the symmetrical power supply. Capacitors can be changed for operation at other frequencies.
This converter converts a signal in the 200 kHz to 3.8 MHz band into frequency signals that can be...
This is a commercial circuit from the year 1958. Transistors are germanium types and transformers...
This complex circuit was found in the 1993 edition of the Electronics Experimenter's Handbook. Most of...