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.
January 6, 2016 - Mouser Electronics, Inc. is now stocking the TPS25810 USB Type-C™...
The tone produced by this circuit depends on the capacitor and the adjustment of the...
The figure shows how to use the LM3914 bargraph with expanded scale. The circuit has two...