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.
This circuit was found in an EDN from the 90s. The circuit employs a double 555 and uses the...
This very common high resistance input voltmeter configuration was obtained in a 1993...
If the player is recovering an old cassette recorder and needs a preamplifier to pass recordings from...