Interface circuit and communication device

Details Interface circuit and communication device Interface circuit and communication device

2010-08-10

2011-12-13

Barnie, Rexford (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

Reexamination Certificate

active

08077441

ABSTRACT:
An interface circuit and a communication device are provided. The interface circuit includes a transformer unit, a protection unit, and an interface unit. A secondary side of the transformer unit is connected with a chip. A first terminal of the protection unit is electrically connected with a center tap of a primary side of the transformer unit, and a second terminal of the protection unit is grounded. A first access terminal of the interface unit is connected with a first port of the primary side of the transformer unit, a second access terminal of the interface unit is connected with a second port of the primary side of the transformer unit, and a third access terminal and a fourth access terminal of the interface unit are electrically connected with the first terminal of the protection unit respectively.

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International Search Report, mailed May 28, 2009, in corresponding International Application PCT/CN2009/070674 (4 pp.).
Extended European Search Report, mailed Jul. 28, 2011, in European Application No. 09722061.0 (8 pages).

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