article · English
The TELEFUNKEN RA 742 Analog Computer
A single-page illustrated article from the Analog Museum describing the TELEFUNKEN RA 742 transistorized tabletop analog computer, covering its three-drawer architecture (power supply, function generators, and patch/control panel), and key specifications: 25 chopper-stabilized op-amps with 10^8 open-loop gain, four parabola multipliers, two diode function generators, 20 coefficient potentiometers, removable patch panel, and a total weight of 105 kg. The author also documents the experience of diagnosing and repairing the precision dual-rail +/-10 V power supply, and two sample calculations performed after restoration.
analog computeroperational amplifiersfunction generatorsparabola multipliers