This configuration was found in an American publication from the 90s. Operators admit equivalents just like transistors. The circuit does not require a symmetrical source.
We found this circuit in an American publication from 1977. Operationals can be type 741 with...
In the figure we have the way to use a voltage comparator powered by a voltage to control a...
This circuit was found in the November 1994 issue of Electronics Now magazine. The circuit is...