GB0708443D0 - Apparatus and method for estimating power losses in data cables - Google Patents

Apparatus and method for estimating power losses in data cables

Info

Publication number
GB0708443D0
GB0708443D0 GBGB0708443.7A GB0708443A GB0708443D0 GB 0708443 D0 GB0708443 D0 GB 0708443D0 GB 0708443 A GB0708443 A GB 0708443A GB 0708443 D0 GB0708443 D0 GB 0708443D0
Authority
GB
United Kingdom
Prior art keywords
power losses
data cables
estimating power
estimating
cables
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
GBGB0708443.7A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CROUCH IAIN C
Original Assignee
CROUCH IAIN C
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CROUCH IAIN C filed Critical CROUCH IAIN C
Priority to GBGB0708443.7A priority Critical patent/GB0708443D0/en
Publication of GB0708443D0 publication Critical patent/GB0708443D0/en
Priority to PCT/GB2008/050182 priority patent/WO2008135774A1/en
Priority to GB0807433A priority patent/GB2448971A/en
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/0272—Arrangements for coupling to multiple lines, e.g. for differential transmission
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/58—Testing of lines, cables or conductors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/10—Current supply arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/0266—Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Dc Digital Transmission (AREA)
GBGB0708443.7A 2007-05-02 2007-05-02 Apparatus and method for estimating power losses in data cables Ceased GB0708443D0 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GBGB0708443.7A GB0708443D0 (en) 2007-05-02 2007-05-02 Apparatus and method for estimating power losses in data cables
PCT/GB2008/050182 WO2008135774A1 (en) 2007-05-02 2008-03-14 Apparatus and method for estimating power losses in data cables
GB0807433A GB2448971A (en) 2007-05-02 2008-04-24 Measuring the resistance of data cable conductors used for supplying power

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0708443.7A GB0708443D0 (en) 2007-05-02 2007-05-02 Apparatus and method for estimating power losses in data cables

Publications (1)

Publication Number Publication Date
GB0708443D0 true GB0708443D0 (en) 2007-06-06

Family

ID=38171028

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0708443.7A Ceased GB0708443D0 (en) 2007-05-02 2007-05-02 Apparatus and method for estimating power losses in data cables
GB0807433A Withdrawn GB2448971A (en) 2007-05-02 2008-04-24 Measuring the resistance of data cable conductors used for supplying power

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB0807433A Withdrawn GB2448971A (en) 2007-05-02 2008-04-24 Measuring the resistance of data cable conductors used for supplying power

Country Status (2)

Country Link
GB (2) GB0708443D0 (en)
WO (1) WO2008135774A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11251608B2 (en) 2010-07-13 2022-02-15 Raycap S.A. Overvoltage protection system for wireless communication systems
EP2780777B1 (en) 2011-09-22 2017-04-19 Telefonaktiebolaget LM Ericsson (publ) Reverse power metering
US9660456B2 (en) * 2011-10-24 2017-05-23 Linear Technology Corporation Switching of conductor pair in power over ethernet system
DE102012106995B3 (en) * 2012-07-31 2014-01-30 Fujitsu Technology Solutions Intellectual Property Gmbh Electronic device for Power-over-Ethernet and process
RU2709188C2 (en) * 2014-07-08 2019-12-17 Филипс Лайтинг Холдинг Б.В. Fed device and power distribution system comprising powered device
GB2552157B (en) * 2016-07-08 2020-01-29 Canon Kk Determination of the resistance structure of an electrical circuit
CN107547210B (en) * 2017-08-25 2021-06-18 锐捷网络股份有限公司 Non-standard power supply equipment, powered equipment and system
GB2568259B (en) * 2017-11-08 2020-04-15 Canon Kk Method and device for generating a voltage drop pulse
US11677164B2 (en) 2019-09-25 2023-06-13 Raycap Ip Assets Ltd Hybrid antenna distribution unit
CN113777522B (en) * 2020-06-10 2022-10-04 华为技术有限公司 Power supply detection device and method and computer program product thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6597183B1 (en) * 2001-12-28 2003-07-22 Texas Instruments Incorporated Resistance measurement system
US7856561B2 (en) * 2005-01-25 2010-12-21 Linear Technology Corporation Detecting legacy powered device in power over ethernet system
US7511515B2 (en) * 2005-01-25 2009-03-31 Linear Technology Corporation System for providing power over communication cable having mechanism for determining resistance of communication cable
US20060212724A1 (en) * 2005-03-15 2006-09-21 Dwelley David M System and method for supporting operations of advanced power over ethernet system
US7469348B2 (en) * 2005-03-28 2008-12-23 Akros Silicon, Inc. Method for dynamic insertion loss control for 10/100/1000 MHz Ethernet signaling
US7664972B2 (en) * 2006-12-19 2010-02-16 Broadcom Corporation System and method for controlling power delivered to a powered device based on cable characteristics

Also Published As

Publication number Publication date
WO2008135774A1 (en) 2008-11-13
GB2448971A (en) 2008-11-05
GB0807433D0 (en) 2008-05-28

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Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)