The selected circuit was found in GE's 1977 semiconductor manual. 3N84 is a controlled silicon switch and SCRs support equivalents. The transistor can be a BC558, depending on the supply voltage.
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...