This circuit was found in the March 1980 issue of Radio Electronics magazine. It is based on the newly released LH2400. The circuit must be powered by a symmetrical power supply.
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...