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 sophisticated power supply from the 80s uses components from the period, which makes it...
We found this small shortwave transmitter circuit in a 1994 documentation. The frequency of the...
This circuit generates a signal up to a few megahertz depending only on the LC resonant circuit...