Abstract
A magnetic-field switching array was developed in the laboratories of Siemens for application in space-division networks of telephone switching systems with electronic control. The array is controlled by two groups of coils arranged rectangularly to each other. Saturation of the reeds is utilized to ensure reliable operation. The average operating time is 1.7 milliseconds. The switching arrays which are going to be described in this paper have been in operation in an experimental public telephone office since November 1962.
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