This circuit can use almost any operating system and has a high input impedance. The power supply must be symmetrical. The circuit was obtained in documentation from the 1980s.
This circuit is suggested by National Semiconductor in its Linear Applications Handbook. It makes...
A frequency range determined by the network of resistors and capacitors with negative feedback and input...
We found this circuit in a Radio Shack documentation from 1977. The circuit serves for a link of...