This balance control for the channels of a stereo system was found in a 1969 Mullard documentation. The transistors may be the modern BC548 equivalents.
This tuning-free circuit was found in an old operating amplifier manual. The setting can serve as...
This circuit controls the passage of the signal from an input to an output using a DC signal from a...
This circuit was suggested in an article in Radio Electronics magazine in January 1992. Other...