This is a commercial circuit from the year 1958. Transistors are germanium types and transformers and coils are hard to fild today. The circuit is destinated to the reception of medium wave stations.
In the figure we have the diagram of a simple transistor radio for the medium wave band. The...
The integrated circuit used in this 1986 wireless microphone is not very common today. The L1 coil...
This circuit was found in the Linear Applications Handbook of the National Semiconductor of 1994....