The presented circuit was found in the National Semiconductor FET Databook. The setting applies to other operational amplifiers and other FETs. The power supply must be symmetrical.
Found in an Electronics Now from the 90s, this circuit appears elsewhere in this section and...
This 3, 5, 6, 9 and 12 V power supply selected by a switch has a digital indicator of the selected...
This circuit is from a Radio Electronics from December 1964. The components are from the time and...