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 has been found in an old documentation and therefore uses a lamp as an indicator. In a...
This monostable circuit uses one of the two flip-flops available on the CMOS 4098 integrated...
This project came out in an article of mine (Newton C. Braga) in the Popular Electronics magazine of...