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.
Obtained from a 1980s Signetics documentation, this circuit uses a common integrated circuit at the...
This circuit that can be used as a three-tone domestic bell has a traditional configuration that...
With 3 transistors, we found this receiver in a documentation from 1966. The circuit has an output...