This circuit is from an old documentation, making use of an operational of the time. The circuit can be adapted to use modern components. The power supply must be symmetrical.
We obtained this circuit from a 1993 documentation. The circuit has 9 current ranges that are...
This FM receiver tuning step circuit was found in a 1960 documentation. No information about the...
This circuit consists of two stages that each shift 180 degrees the signal. The circuit was...