The figure shows how to use an operational circuit as a voltage divider. The circuit is from a Radio Electronics magazine from June 1986. The reference voltage is given by a zener diode.
This circuit was found in a 90s Electronics Now. It generates sinusoidal signals according to the...
This 2006 documentation source contains several built-in regulators that can be adjusted for...
This circuit serves as a reference to learn how signals were decoded in the 1960s. The fully...