Operational Amplifiers Using Controlled Superconductors

The use of controlled superconductors in analog-computer circuitry is discussed. It is shown that the operations of summation, multiplication by a constant, differentiation, integration, and multiplication of two variables may be performed by these circuits. It is pointed out that the advantages of compactness, reliability, and light weight that are inherent to the use of controlled superconductors are now obtainable for analog as well as for digital equipment.