This circuit generates audio signals for testing amplifiers and other equipment. The potentiometer R5 adjusts the waveform. The circuit was found in an Electronics Experimenter from the 80s. The power comes from a 9 V battery.

This circuit generates audio signals for testing amplifiers and other equipment. The potentiometer R5 adjusts the waveform. The circuit was found in an Electronics Experimenter from the 80s. The power comes from a 9 V battery.