- Published in issue 3/1997 on page 16
Battery-operated AF signal generator
Testing and faultfinding of audio equipment and low-frequency test instruments is all but impossible without a good signal generator. The function generator used in so many small workshops is, owing to the rather high distortion of the sine-wave output, not really suitable in many cases. This article describes an output generator whose output signal has very low distortion and in which, moreover, hum and earth loops are obviated thanks to its power being supplied by a battery.