Electricity: electrical systems and devices – Safety and protection of systems and devices – Load shunting by fault responsive means
Reexamination Certificate
2004-04-28
2010-10-05
Jackson, Stephen W (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
Load shunting by fault responsive means
C361S111000, C361S091100
Reexamination Certificate
active
07808751
ABSTRACT:
A magnetic interface circuit for interfacing between the line side and the circuit side of a communication channel, such as an Ethernet port, includes a transformer having a primary winding connected to the line side of the channel and a secondary winding connected to the circuit side of the channel. The primary winding is fortified to provide differential mode electrical surge protection on the line side. The transformer design having parasitic L, C and R and, saturation during the surge event, acting to suppress the coupling of the electrical surge to the secondary winding. A voltage limiting device is connected in the circuit side of the channel to limit any voltage surges on the circuit side to a safe level. A pair of voltage limiting devices connected in series with the connection therebetween connected to ground may be used to also provide common mode surge protection.
REFERENCES:
patent: 2406615 (1946-08-01), Lensner
patent: 2408868 (1946-10-01), Mehring et al.
patent: 3408536 (1968-10-01), Tibbs
patent: 3444434 (1969-05-01), Zocholl
patent: 5142429 (1992-08-01), Jaki
patent: 5796781 (1998-08-01), DeAndrea et al.
patent: 5989062 (1999-11-01), Daoud
patent: 6377434 (2002-04-01), Martineau et al.
patent: 7123117 (2006-10-01), Chen et al.
Syed Mozul Islam, Kathryn M. Coates, Gerard Ledwich Ideintification of High Frequency Transformer Equivalent Circuit Using Matlab from Frequency Domain Data—Oct. 5-9, 1997 IEEE Industry Applications Society—Annual Meeting—New Orleans, Lousiana—pp. 357-364.
American Wire Gauge and AWG Electrical Current Load Limits. htt://www.powerstream.com/Wire—Size.htm?nowritefs pp. 1-6.
W. M. Flanagan, Handbook of Traansformer Design & Applications, 1993, 2nd Edition, pp. 1.20-1.21, 10.9-10.19.
Chen John
Contreras Steve
Bel Fuse Inc.
Jackson Stephen W
Kitov Zeev
Ostrolenk Faber LLP
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