Found in old documentation, this receiver for the mid-wave range uses transistors from the era. In fact, modern general-purpose equivalents can be used.
This configuration with FET and Unijunction can be found elsewhere on this site. The JFET admits...
This circuit, suggested by General Electric, increases the sensitivity of a common multimeter to 1 M /...
Suggested by an American technical documentation, this circuit is polarized in order to provide an...