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.
Found in Radio Electronics from the 90s, this circuit has a power given by the output amplifier. The...
This circuit was obtained in a 1982 English magazine. The purpose of this circuit is to interface...
We found this circuit in an English publication of 1976. It can be easily assembled by changing the...