Only for reference this is a circuito f a commercial receiver of the year 1958. The circuit uses coils and transformers hadr to find in our days. The circuit is destinated to receive MW stations.
Some old multimeters have a high resistance scale including an internal circuit powered by a 22.5...
This circuit was found in the May 1989 issue of Radio Electronics magazine. The circuit requires a...
We found this circuit in a 1965 Electronic Design. Transistors are still common but admit...