This is the traditional voltage follower configuration with the 741 operational amplifier. The circuit is from 1976 documentation and the power supply must be symmetrical from 6 to 15 V.
Other series operationals such as the LM258, LM358 and LM2904 can be used on this circuit of the...
This circuit was found in old American documentation. It is a Wien bridge with the component...
This circuit is from a 1974 publication, but it can be easily assembled using more modern...