This circuit was found in a 1964 Electronic Design. It generates opposite phase signals from an input signal. Modern equivalent transistors can be used in the same configuration.
This circuit was obtained in an old publication. The FET can also be the BF245. The potentiometers can be...
This two-transistor circuit was found in American documentation from the 1990s. The circuit can use...
This circuit consists of a variation of a 4-input control, with the difference that we have only...