Abstract :
F. S. Dellenbaugh, Jr.: The extreme simplicity with which complex circuits may be worked down to a simple circuit is really extraordinary. As you will notice in the bibliography, Dr. Kennelly was the first to publish “The Equivalence of Triangles and Three-pointed Stars,” in other words, star-delta transformations in 1899, and it has been a little over 23 years that this process has been known and published, and yet, commercially, it appears to be used very little.
