The circuit shown in the figure can be designed with more modern operational amplifiers, as it is from 1994 documentation by National Semiconductor. The power supply must be symmetrical.
This is another of the Star Trek red alert circuit that you can find on this site. We took this...
Found in American documentation from the 1980s, this circuit is a basic signal rejection filter...
This circuit can be used in physics experiments, in ionization and in several other applications. The...