Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Nokia Spain SA
Original Assignee
Alcatel Espana SA
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Filing date
Publication date
Application filed by Alcatel Espana SAfiledCriticalAlcatel Espana SA
Publication of ES436827A1publicationCriticalpatent/ES436827A1/en
H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
H03K17/06—Modifications for ensuring a fully conducting state
Landscapes
Interface Circuits In Exchanges
(AREA)
Devices For Supply Of Signal Current
(AREA)
Amplifiers
(AREA)
Abstract
A circuit to reverse the damping of the switching elements with linear current-voltage characteristic in a telephone exchange, where there are two switching elements for each connection, which are interconnected through a transformer by the part of the switching mesh facing the junction and through a second transformer on the side facing the subscriber, characterized in that a series combination comprising a controllable negative resistance (-R) and a capacitor (C) is connected between the first transformer (U1) and one of the switching elements (for example, RON2), because the capacitor (C) is derived by a resistance (RM) and a generator (G) in series, and because a comparator and control circuit (KR) It is connected in parallel with the resistance (RM) and the generator of (G) and adjusts the negative resistance (-R) in such a way that the voltage drop across the resistance (RM) and through the generator (G) disappears pray. (Machine-translation by Google Translate, not legally binding)
ES436827A1974-04-221975-04-22Compensating circuit for electronic switches
ExpiredES436827A1
(en)
Circuit arrangement for telecommunications switching systems, in particular telephone switching systems, with switching networks and with central and partially central devices
A circuit for investing the damping of electronic switches with linear current-tension characteristics, particularly of the switching elements of a telephone central. (Machine-translation by Google Translate, not legally binding)
CIRCUIT ARRANGEMENT FOR TELECOMMUNICATION SWITCHING SYSTEMS, IN PARTICULAR TELEPHONE SWITCHING SYSTEMS, WITH CONNECTIVELY INDIVIDUAL SWITCHING DEVICES AND THE PARTIAL CONTROL UNITS ASSIGNED TO THEM
CIRCUIT ARRANGEMENT FOR TELECOMMUNICATION SWITCHING SYSTEMS, ESPECIALLY TELECOMMUNICATION SWITCHING SYSTEMS, WITH SWITCHING DEVICES AND THEIR COMMON REQUESTING DEVICES