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.
Fluorescent lamps in the range from 4 to 40 W can be powered on from cells or batteries. The lamp...
We found this oscillator in an integrated circuit manual from the 90's. The circuit shows how to...
This circuit was found in a 1970s documentation. The components are from that time, and...