schaltungsanordnung to impulsweisen energieuebertragung between two leitungsabschnitten and between two periodic betaetigbaren contacts eingeschaltetes reaktanznetzwerk in telecommunications, in particular time multiplex - fernsprechvermittlungsanlagen

摘要

1,009,376. Automatic exchange systems; pulse modulation systems. STANDARD TELEPHONES & CABLES Ltd. July 27, 1962 [July 28, 1961], No. 28979/62. Headings HK4 and H4L. A filter for use in a time division multiplex system utilizing the energy transfer technique comprises a low-pass filter section MRN of which the capacitor Cc acts as the storage capacitor of the system, an anti-resonant circuit LCN comprising at least one parallel LC circuit and the usual transfer inductance LT, the filter being connected between a subscriber's line Ro and a gate GT having access to a multiplex highway HG. The Specification explains mathematically how values for the various impedances present in the filter may be calculated (in terms of non-lossless components) in order to achieve optimum transmission of signals between two such circuits connected to the highway. The Specification shows that such a filter gives an improved pass-band. characteristic and is also effective to attenuate lower side bands of the pulse repetition frequency.