This circuit appears elsewhere in this section and on this site. The circuit generates a linear ramp having been found in 1980s documentation. The transistor is a general purpose type.
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...