This circuit was obtained from the Audio Handbook of the National Semiconductor of 1977. We can use any FET, like the BF245 and the diode is of the type 1N4148. The circuit switches only small audio signals.

This circuit was obtained from the Audio Handbook of the National Semiconductor of 1977. We can use any FET, like the BF245 and the diode is of the type 1N4148. The circuit switches only small audio signals.