A line state detecting apparatus provided in a balanced transmission system includes, in transmission lines comprising a pair of conductors W1, W2 connected to a transmitting portion 13, current transformers T11, T12 primary sides of which are inserted to respectives thereof in series therewith and secondary...http://www.google.fr/patents/US20050232412?utm_source=gb-gplus-shareBrevet US20050232412 - Line state detecting apparatus and transmitting apparatus and receiving apparatus of balanced transmission system
Line state detecting apparatus and transmitting apparatus and receiving ...
Numéro de demande: 11/105,573 Numéro de publication: US 2005/0232412 A1 Date de dépôt: 14 avr. 2005 Brevet délivré: US8139759 ( Date de délivrance 20 mars 2012)
