Root-Sum-of-Squares Circuits with the 433

In Volume 6, No. 2, the Model 433 multifunction analog module was introduced. It is a device that is characterized by the function: (10/V_R)Y(Z/X)^m, where all inputs and the output can have any value from 0 to +10V, V_R ≅ 9V, and the exponent m can range from 0.2 to 5, as set by a resistance ratio. Read full article

Author

Dan Sheingold

Dan Sheingold, editor of Analog Dialogue since 1969 (Vol. 3), received a BSEE “with distinction” from WPI in 1948 and an MSEE from Columbia University in 1949. After 19 years with George A. Philbrick Researches, Inc., working with and writing about applications of analog computers and operational amplifiers—including the editing of the widely distributed Applications Manual–Computing Amplifiers—he joined Analog Devices. At ADI, besides Analog Dialogue, he has edited books on data converters (several editions), nonlinear circuits, and transducer interfacing, as well as Richard Higgins’s Digital Signal Processing in VLSI. In 1990 he was elected a Fellow of the IEEE, “for contributions to the understanding and use of analog devices and data converters.”