This circuit, from a component manual, also applies to other components in the same family. The font does not have to be symmetrical, and the characteristics are given next to the diagram.
In the figure we have a simple signal tracer circuit to be coupled to the volume control of an AM...
This circuit was found in documentation from the 90s, using components from that time. The...
This circuit, obtained from old documentation, allows the recovery of sulfated batteries. The...