This circuit simulates the signal produced by a muscle, serving to adjust medical equipment. The circuit is from the 1968 Mullard. Transistors support modern equivalents.
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...