Schaltungsanordnung fuer elektronische Fernsprechvermittlungssysteme

摘要

A self-seeking current controlled electronic switching network comprised of a plurality of cascaded stages of switching matrices. Each vertical multiple has an associate RC network for controlling the duration of the turned-on time period of the crosspoints during a route search. The RC circuit controlled time periods are selected to make each stage of the network run at an independent frequency, the frequencies being selected as a function of (a) the dynamic biasing changes which occur in the crosspoints responsive to the turning on and off, (b) the dynamic tapering which occurs in the network responsive to busy vertical conditions, and (c) the frequency of preceding stages.