1994 Volume 114 Issue 3 Pages 255-259
A fail-safe logic circuit must switch the output signal to the logical value “0” when the operation circuit fails. Transformer has such favorable characteristics for fail-safe logic circuits that only the magnetic flux change is transmitted and that a superposition of magnetic flux is realized. So we applied those characteristics to a fail-safe logic operator. A new fail-safe logic operator using an insulated planar transformer was developed for a fail-safe majority operation and a fail-safe interlocking. In this paper, the principle, structure, fabrication and fundamental characteristics of the new fail-safe logic operator are described.
The transactions of the Institute of Electrical Engineers of Japan.C
The transactions of the Institute of Electrical Engineers of Japan.B
The transactions of the Institute of Electrical Engineers of Japan.A
The Journal of the Institute of Electrical Engineers of Japan