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.
The component used in this circuit is uncommon today, as the circuit was obtained from Motorola's Linear...
This circuit was found in a technical documentation from the 90's. The transistors can be...
This circuit was found in an 80's EDN. Integrated circuits are from that time. The circuit has an...