Electricity: electrical systems and devices – Safety and protection of systems and devices – Series connected sections with faulty section disconnect
Patent
1996-10-24
1999-12-07
Sherry, Michael J.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Series connected sections with faulty section disconnect
361 67, H02H 300
Patent
active
059993898
ABSTRACT:
A repeater for a communication network having an isolation circuit for disabling the transmission of a fault-indicative signal through the repeater onto the network. A retriggerable one-shot starts timing with high to low signal transition. In the absence of a second transition within a defined time period, the one-shot triggers a flip-flop which, depending on the logic level of the input signal, generates an enabling signal passed to a logic gate to selectively allow and cut off the transmission of the signal to the repeater circuit input.
REFERENCES:
patent: 3659055 (1972-04-01), Witmore
Luebke Charles J.
Rutchik Walter L.
Eaton Corporation
Kosinski Charles E.
Sherry Michael J.
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