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.
This circuit was obtained from an American 80's documentation. The balanced mixer can be shown in...
Found in a 90s Electronic Design, this circuit generates harmonics from a sinusoidal input signal....
Published in an old Popular Electronics, this circuit makes use of components that are still...