The transistor may be the BC548 in this circuit for low frequency signals. We found it in an old documentation. Power can be between 6 and 12 V.
![](/images/stories/cir/224412442023_160144_0001.gif)
The transistor may be the BC548 in this circuit for low frequency signals. We found it in an old documentation. Power can be between 6 and 12 V.