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 configuration, which appears on other circuits on this site, was found in a European...
This circuit can supply currents up to 1 A from alternating input voltages. The circuit uses...
This very simple circuit was found in a 1977 documentation. The L1 coil has 3 turns of AWG wire 22 to...