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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Publication date
Application filed by Alcatel Espana SAfiledCriticalAlcatel Espana SA
Priority to ES384058ApriorityCriticalpatent/ES384058A1/en
Publication of ES384058A1publicationCriticalpatent/ES384058A1/en
Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections
(AREA)
Abstract
Test circuit of the state of a two-wire line (with a closed loop or an open loop) according to which the line is fed by a direct current through two preferably equal resistors, characterized in that it comprises, in particular: - a capacitor connected in parallel on two line wires by two decoupling resistors; - a test input connected to one of the terminals of the capacitor by a first decoupling diode appropriately oriented; - a reading output connected to the other terminal of the capacitor by a second decoupling diode appropriately oriented; These different means arranged in such a way that an interrogation pulse applied to the test input gives rise to a certain level pulse, at the reading output, only when the line wires do not have a closed loop. (Machine-translation by Google Translate, not legally binding)
ES384058A1970-09-291970-09-29Proof circuit of the state of a two-wire line. (Machine-translation by Google Translate, not legally binding)
ExpiredES384058A1
(en)
Improvements in bipolar electrical connection elements with dependent characteristic values of an external connection circuit. (Machine-translation by Google Translate, not legally binding)