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.
We found this FET-stabilized circuit in an American documentation from the 90s. With the values of the...
Other operational amplifiers of the same family can be used in this circuit suggested by Motorola in...
This circuit was found in Japanese documentation from the 1960s. The coil must be 4 mH and the...