This receiver with earphone listening for the medium wave range was published in Radio Electronics magazine in February 1958. The circuit was powered by a 15 V battery.
This circuit is from a 1986 Revista Española de Electrónica. It consists of an amplifier with...
This is the project was found in a 1982 publication. As shown in the figure, these are two...
This very simple circuit uses two stripped wires as sensors that must be at the drive level. The...