Invention Grant
- Patent Title: Method and apparatus for shared positive protection
- Patent Title (中): 共享正面保护的方法和装置
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Application No.: US12550782Application Date: 2009-08-31
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Publication No.: US08442213B2Publication Date: 2013-05-14
- Inventor: Qiangsheng Charssen Ge
- Applicant: Qiangsheng Charssen Ge
- Applicant Address: US TX Austin
- Assignee: Microsemi Semiconductor (U.S.) Inc.
- Current Assignee: Microsemi Semiconductor (U.S.) Inc.
- Current Assignee Address: US TX Austin
- Main IPC: H04M1/00
- IPC: H04M1/00 ; H04M9/00

Abstract:
A line card includes a plurality of subscriber line interface circuits, a plurality of interface lines, and a first overvoltage protector. The subscriber line interface circuits each have a first input terminal operable to receive power at a first positive reference voltage. The interface lines are each coupled to one of the subscriber line interface circuits for interfacing with subscriber lines external to the line card. The first overvoltage protector is coupled to the interface lines and referenced to the first positive reference voltage to provide overvoltage protection responsive to a voltage on at least one of the interface lines exceeding the first positive reference voltage.
Public/Granted literature
- US20110051925A1 METHOD AND APPARATUS FOR SHARED POSITIVE PROTECTION Public/Granted day:2011-03-03
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