Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Patent
1997-07-28
2000-05-02
Gaffin, Jeffrey
Electricity: electrical systems and devices
Safety and protection of systems and devices
High voltage dissipation
361 58, 361113, 361118, H02H 100
Patent
active
06058002&
ABSTRACT:
A common mode signal attenuator includes a magnetic core, and a communications cable having at least one conductor adapted to transmit a communications signal. The communications cable is magnetically coupled to the core to form an inductive element having a magnetic flux path passing through the core. The inductive element has a volt-time capacity of at least about 0.0001 volt-seconds.
An electrical transient suppression system includes an electronic device having a ground path, a communications cable, and a magnetic core. The communications cable has at least one conductor adapted to transmit a communications signal and is connected to the electronic device. The communications cable is magnetically coupled to the core to form a common mode signal attenuator having an inductance of about at least 10 times the inductance of the ground path.
A method for reducing electrical transients in a communications cable includes magnetically coupling the communications cable to a magnetic core. The communications cable has at least one conductor adapted to transmit a communications signal. The communications cable and magnetic core are coupled to form an inductive element having a magnetic flux path passing through the core. The inductive element has a volt-time capacity of at least 0.0001 volt-seconds.
REFERENCES:
patent: 3812292 (1974-05-01), Tink
patent: 4137556 (1979-01-01), Sessa
patent: 5053920 (1991-10-01), Goldstein
patent: 5353189 (1994-10-01), Tomlinson
patent: 5448443 (1995-09-01), Muelleman
patent: 5530321 (1996-06-01), Sears
Surge Protectors for Telephone and Data Lines, (1996) 2nd Edition, Citel, Inc.
Rau C. Peter
Wilson Glenn E.
Emerson Electric Co.
Gaffin Jeffrey
Jackson Stephen W.
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