This precision signal rectifier was obtained in an American technical documentation from 1975. The operational amplifiers can be 741 and the power must be supplied from a symmetrical source.
This circuit from a Radio Electronics from December 1974 was used in color televisions of the...
This circuit appears in several versions on this site. It is designed to be used between the...
We found this circuit in a publication of 1991. The audio amplifier is an operational that admits...