AU2001251089A1 - Cooling module incorporating communication port and related circuits - Google Patents

Cooling module incorporating communication port and related circuits

Info

Publication number
AU2001251089A1
AU2001251089A1 AU2001251089A AU5108901A AU2001251089A1 AU 2001251089 A1 AU2001251089 A1 AU 2001251089A1 AU 2001251089 A AU2001251089 A AU 2001251089A AU 5108901 A AU5108901 A AU 5108901A AU 2001251089 A1 AU2001251089 A1 AU 2001251089A1
Authority
AU
Australia
Prior art keywords
communication port
cooling module
related circuits
module incorporating
incorporating communication
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.)
Abandoned
Application number
AU2001251089A
Inventor
Ford Chapman Mays Ii
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.)
LJM PRODUCTS Inc D/B/A JMC PRODUCTS
Original Assignee
LJM PRODUCTS Inc dba JMC PRO
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
Priority claimed from US09/540,291 external-priority patent/US6392372B1/en
Application filed by LJM PRODUCTS Inc dba JMC PRO filed Critical LJM PRODUCTS Inc dba JMC PRO
Publication of AU2001251089A1 publication Critical patent/AU2001251089A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20209—Thermal management, e.g. fan control
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/08—Arrangements for controlling the speed or torque of a single motor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/20—Arrangements for starting

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Control Of Electric Motors In General (AREA)
AU2001251089A 2000-03-31 2001-03-29 Cooling module incorporating communication port and related circuits Abandoned AU2001251089A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US09/540,291 US6392372B1 (en) 2000-03-31 2000-03-31 Brushless DC fan module incorporating integral fan control circuit with a communication port for receiving digital commands to control fan
US09540291 2000-03-31
US09664619 2000-09-19
US09/664,619 US6545438B1 (en) 2000-03-31 2000-09-19 Cooling module and related control circuits useful therefor incorporating a communication port for receiving digital command signals to control module
PCT/US2001/010066 WO2001076057A2 (en) 2000-03-31 2001-03-29 Cooling module incorporating communication port and related circuits

Publications (1)

Publication Number Publication Date
AU2001251089A1 true AU2001251089A1 (en) 2001-10-15

Family

ID=27066397

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001251089A Abandoned AU2001251089A1 (en) 2000-03-31 2001-03-29 Cooling module incorporating communication port and related circuits

Country Status (3)

Country Link
US (1) US6545438B1 (en)
AU (1) AU2001251089A1 (en)
WO (1) WO2001076057A2 (en)

Families Citing this family (111)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10256658A1 (en) 2001-12-10 2003-07-03 Papst Motoren Gmbh & Co Kg Producing alarm signal for motors for critical drive tasks, involves checking at intervals whether current revolution rate is in range outside that defined by desired and alarm switch-on rates
JP3861704B2 (en) * 2002-01-31 2006-12-20 株式会社デンソー Driving device for cooling fan motor for vehicle
US6801004B2 (en) * 2002-06-20 2004-10-05 Minebea Co., Ltd. System and method of controlling cooling fan speeds
US6725132B2 (en) 2002-06-20 2004-04-20 Minebea Co., Ltd. Intelligent cooling fan
US20030234625A1 (en) * 2002-06-20 2003-12-25 Minebea Co., Ltd. Cooling fan capable of providing cooling fan data
US6931306B2 (en) * 2002-06-20 2005-08-16 Minebea Co., Ltd. System and method of designing cooling fans
JP2004090899A (en) * 2002-09-04 2004-03-25 Advics:Kk Brake alarm device for vehicle
JP4108428B2 (en) * 2002-09-30 2008-06-25 山洋電気株式会社 Brushless DC fan motor
US6737824B1 (en) * 2002-09-30 2004-05-18 National Semiconductor Corporation Fan acceleration control
US7227748B2 (en) * 2003-03-31 2007-06-05 Sun Microsystems, Inc. Cooling module
US6950029B2 (en) * 2003-06-24 2005-09-27 Delphi Technologies, Inc. Airflow blockage detection apparatus for a permanent split-capacitor single-phase fan motor
US7233121B2 (en) * 2003-07-04 2007-06-19 Delta Electronics, Inc. Fan speed control circuit
US7644194B2 (en) * 2003-07-14 2010-01-05 Broadcom Corporation Method and system for addressing a plurality of Ethernet controllers integrated into a single chip which utilizes a single bus interface
EP1501186B1 (en) * 2003-07-18 2018-08-22 III Holdings 10, LLC Motor driving apparatus
US8237386B2 (en) 2003-08-15 2012-08-07 Apple Inc. Methods and apparatuses for operating a data processing system
TW200511004A (en) * 2003-09-12 2005-03-16 Micro Star Int Co Ltd A monitoring and control device and method thereof
US6946809B2 (en) * 2003-09-30 2005-09-20 Asia Vital Components Co., Ltd. Motor driving system
US20050135794A1 (en) * 2003-12-22 2005-06-23 General Electric Company Method and system for negative torque reduction in a brushless DC motor
US7035102B2 (en) * 2004-01-08 2006-04-25 Apple Computer, Inc. Apparatus for air cooling of an electronic device
US7242576B2 (en) * 2004-01-08 2007-07-10 Apple Inc. Quick release structures for a computer
US20050209740A1 (en) * 2004-03-19 2005-09-22 Vann Warren E Jr Systems and methods for controlling fans
US7401644B2 (en) * 2004-03-26 2008-07-22 Hewlett-Packard Development Company, L.P. Computer systems and related methods for cooling such systems
US7151349B1 (en) * 2004-04-08 2006-12-19 Analog Devices, Inc. Fan speed control
US8615886B1 (en) * 2004-05-06 2013-12-31 Winthrop D. Childers Shaving system with energy imparting device
FR2871875B1 (en) * 2004-06-16 2006-07-28 Air Liquide METHOD FOR CONTROLLING VENTILATION IN A CONDUIT
US7782002B2 (en) * 2004-09-08 2010-08-24 Progressive Dynamics, Inc. Power converter
CN1299205C (en) * 2004-09-13 2007-02-07 李谦 Method for monitoring device by SMBus chip on PCI plate and its device
US7089128B2 (en) * 2004-09-24 2006-08-08 Asia Vital Component Co., Ltd. Control circuit of a DC fan motor for start with high voltage and high rotational speed with low voltage
US7508146B2 (en) * 2004-10-18 2009-03-24 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Multi-speed dual fan module system for engine cooling applications
CN100377491C (en) * 2004-10-30 2008-03-26 鸿富锦精密工业（深圳）有限公司 DC fan self-starting circuit
US7305316B2 (en) * 2004-12-23 2007-12-04 Minebea Co., Ltd. Microcontroller methods of improving reliability in DC brushless motors and cooling fans
TW200622564A (en) * 2004-12-27 2006-07-01 First Internation Computer Inc Fan control system, method and heat dissipation system for electronic device
US7612508B2 (en) * 2005-01-07 2009-11-03 Dell Products L.P. System and method for communication with an information handling system cooling fan
US7098617B1 (en) * 2005-02-16 2006-08-29 Texas Instruments Incorporated Advanced programmable closed loop fan control method
TWI284260B (en) * 2005-06-02 2007-07-21 Delta Electronics Inc Heat dissipation system
US7319299B2 (en) * 2005-06-27 2008-01-15 Lenovo (Singapore) Pte. Ltd. Determining types of cooling fans used in a personal computer thereby using optimum parameters to control each unique cooling fan
US8113263B2 (en) * 2005-06-30 2012-02-14 Overhead Door Corporation Barrier operator with magnetic position sensor
CN1892609A (en) * 2005-07-09 2007-01-10 鸿富锦精密工业（深圳）有限公司 Method for automatically detecting fan kind of central processor
US7715698B2 (en) * 2005-08-31 2010-05-11 Thor Power Corporation Control electronics for brushless motors
US7577767B1 (en) * 2005-09-09 2009-08-18 Emc Corporation Data storage system having plural storage processors in a single chassis
US7132809B1 (en) * 2005-11-09 2006-11-07 Inventec Corporation Fan-controlling system to control a plurality of fans with different pulse width modulation signals
US7671555B2 (en) * 2005-12-21 2010-03-02 A. O. Smith Corporation Motor, a method of operating a motor, and a system including a motor
TWI330449B (en) * 2005-12-23 2010-09-11 Delta Electronics Inc Fan system and low speed detecting device thereof
CN101026918A (en) * 2006-02-21 2007-08-29 马士科技有限公司 Compact light-operated fluorescent lamp and its light-operated circuit
TWI339489B (en) * 2006-03-31 2011-03-21 Delta Electronics Inc Fan motor control method and device thereof
US7486042B2 (en) * 2006-07-05 2009-02-03 Honeywell International Inc. Component position determination circuit using a brushless DC motor commutation sensor
CN101136574B (en) * 2006-08-28 2011-01-12 中山大洋电机股份有限公司 DC brushless motor system
US7787994B2 (en) * 2006-09-05 2010-08-31 Honeywell International Inc. Single line control for HVAC actuator
CN101141109B (en) * 2006-09-07 2010-12-15 比亚迪股份有限公司 Stepping motor drive integrated circuit
US7830104B2 (en) * 2006-09-19 2010-11-09 Seiko Epson Corporation Brushless motor
TWI327259B (en) * 2006-09-21 2010-07-11 Tyan Computer Corp Complex signal processing system and method for multiple fans
US7683566B2 (en) * 2007-01-30 2010-03-23 Inventec Corporation Fan rotation speed control circuit of power supply system
US20080240090A1 (en) * 2007-03-28 2008-10-02 Adc Dsl Systems, Inc. Programmable high speed crossbar switch
US20080239666A1 (en) * 2007-03-28 2008-10-02 Adc Dsl Systems, Inc. Fan module
US20080310967A1 (en) * 2007-06-13 2008-12-18 Franz John P Intelligent air moving apparatus
CN101350549A (en) * 2007-07-19 2009-01-21 瑞格电子股份有限公司 Running apparatus for ceiling fan
US8903577B2 (en) 2009-10-30 2014-12-02 Lsi Industries, Inc. Traction system for electrically powered vehicles
US8604709B2 (en) 2007-07-31 2013-12-10 Lsi Industries, Inc. Methods and systems for controlling electrical power to DC loads
US7598683B1 (en) 2007-07-31 2009-10-06 Lsi Industries, Inc. Control of light intensity using pulses of a fixed duration and frequency
US9681587B2 (en) * 2007-08-30 2017-06-13 Pce, Inc. System and method for cooling electronic equipment
US9395771B1 (en) 2007-10-26 2016-07-19 Pce, Inc. Plenum pressure control system
TWI340535B (en) * 2007-11-02 2011-04-11 Inventec Corp Device of fan speed control
US9207023B2 (en) 2007-12-18 2015-12-08 Sandia Corporation Heat exchanger device and method for heat removal or transfer
US8228675B2 (en) * 2007-12-18 2012-07-24 Sandia Corporation Heat exchanger device and method for heat removal or transfer
US8988881B2 (en) 2007-12-18 2015-03-24 Sandia Corporation Heat exchanger device and method for heat removal or transfer
US20090225090A1 (en) * 2008-03-04 2009-09-10 Asustek Computer Inc. Apparatus for adjusting parameters of display card
DE102008015297A1 (en) * 2008-03-20 2009-10-01 Fujitsu Siemens Computers Gmbh Circuit unit for controlling an electronically commutated fan motor
EP2117103B1 (en) * 2008-05-09 2010-07-14 Micronas GmbH Integrated switch for controlling an electromotor
US20100001670A1 (en) * 2008-07-03 2010-01-07 Honeywell International Inc., Single-chip brushless motor controller
CN101629577A (en) * 2008-07-18 2010-01-20 鸿富锦精密工业（深圳）有限公司 Fan control circuit
TWI353508B (en) * 2008-09-03 2011-12-01 Anpec Electronics Corp Rotating speed adjustment circuit and related cont
TWI345698B (en) * 2008-09-10 2011-07-21 Asustek Comp Inc Fan module and system
US9005417B1 (en) 2008-10-01 2015-04-14 Sandia Corporation Devices, systems, and methods for microscale isoelectric fractionation
US8330586B2 (en) * 2009-02-24 2012-12-11 Marvell World Trade Ltd. Systems and methods for programming of a cooling fan via a serial port communication mode
CN101814894B (en) * 2009-02-24 2013-04-24 马维尔国际贸易有限公司 Serial port communication mode programming system for a cooling fan and a method thereof
CN101994718B (en) * 2009-08-11 2014-12-17 鸿富锦精密工业（深圳）有限公司 Fan control circuit
CN102032206B (en) * 2009-09-25 2014-08-20 鸿富锦精密工业（深圳）有限公司 Fan time-delay control system
US9506821B1 (en) 2009-12-17 2016-11-29 EMC IP Holding Company LLC System and method for controlling fan speed
US8311764B1 (en) 2009-12-17 2012-11-13 Emc Corporation System and method for approximating ambient temperature
US9918410B2 (en) * 2010-03-16 2018-03-13 Hewlett Packard Enterprise Development Lp Fan control system and method
US8945914B1 (en) 2010-07-08 2015-02-03 Sandia Corporation Devices, systems, and methods for conducting sandwich assays using sedimentation
US8962346B2 (en) 2010-07-08 2015-02-24 Sandia Corporation Devices, systems, and methods for conducting assays with improved sensitivity using sedimentation
US9795961B1 (en) 2010-07-08 2017-10-24 National Technology & Engineering Solutions Of Sandia, Llc Devices, systems, and methods for detecting nucleic acids using sedimentation
AU2015201100B2 (en) * 2010-07-30 2016-06-23 Automatic Technology (Australia) Pty Ltd Operator unit for driving a closure
AU2011284806B2 (en) * 2010-07-30 2015-04-09 Automatic Technology (Australia) Pty Ltd Integrated controller for closure operator unit
US9261100B2 (en) 2010-08-13 2016-02-16 Sandia Corporation Axial flow heat exchanger devices and methods for heat transfer using axial flow devices
DE102010049856B4 (en) * 2010-10-27 2016-08-18 Fujitsu Technology Solutions Intellectual Property Gmbh Control circuit and method for speed control, data processing device and program code
CN102913428A (en) * 2011-08-01 2013-02-06 鸿富锦精密工业（深圳）有限公司 Fan module testing system
US9244065B1 (en) 2012-03-16 2016-01-26 Sandia Corporation Systems, devices, and methods for agglutination assays using sedimentation
TWI535184B (en) * 2012-07-17 2016-05-21 茂達電子股份有限公司 Driving circuit and method for direct current fan
JP5947646B2 (en) * 2012-07-19 2016-07-06 山洋電気株式会社 Motor control device
US9662959B2 (en) * 2012-12-11 2017-05-30 Ford Global Technologies, Llc Blower control for vehicle with start-stop engine
CN103867471B (en) * 2012-12-11 2016-12-21 国网山东省电力公司东营供电公司 Wind energy supply system and there is the electronic installation of this wind energy supply system
EP2951661A4 (en) * 2013-01-31 2016-09-28 Hewlett Packard Entpr Dev Lp Controlled heat delivery
JP6372981B2 (en) * 2013-08-23 2018-08-15 日本電産サーボ株式会社 Motor drive device
US9982681B2 (en) 2013-10-10 2018-05-29 Gentherm Automotive Systems (China) Ltd. Externally programmable fan
TWI516016B (en) * 2014-02-21 2016-01-01 台達電子工業股份有限公司 Driving circuit and driving method thereof
US10056807B2 (en) 2014-12-23 2018-08-21 Orange Motor Company L.L.C. Electronically commutated fan motors and systems
US9913345B2 (en) * 2014-12-31 2018-03-06 Svlux Corporation Illumination device
US10008968B2 (en) * 2015-01-29 2018-06-26 Regal Beloit America, Inc. Systems and methods for sensing a line powering an electric motor
CN106321478A (en) * 2015-06-22 2017-01-11 鸿富锦精密工业(武汉)有限公司 Fan control system
CN106020391B (en) * 2016-05-12 2019-09-20 福建捷联电子有限公司 A kind of microminiature computer fan control method
US10467892B2 (en) * 2016-11-17 2019-11-05 Cisco Technology, Inc. Method and apparatus for exchanging information through a tachometer signal
CN108092596B (en) * 2016-11-21 2022-05-31 德昌电机(深圳)有限公司 Motor application device and control method thereof
JP2018191419A (en) 2017-05-01 2018-11-29 日本電産株式会社 Brushless dc motor, and identification method and identification device for identifying type of brushless dc motor
JP2018191418A (en) 2017-05-01 2018-11-29 日本電産株式会社 Brushless dc motor, and identification method and identification device for identifying type of brushless dc motor
CN108809159B (en) 2017-05-01 2022-01-04 日本电产株式会社 Brushless DC motor, and identification method and identification device for identifying type thereof
JP2018191420A (en) 2017-05-01 2018-11-29 日本電産株式会社 Brushless dc motor, and identification method, and identification device for identifying type of brushless dc motor
US11402882B2 (en) * 2018-09-19 2022-08-02 Hewlett Packard Enterprise Development Lp Pulse width modulation fan
US11019754B2 (en) 2019-06-28 2021-05-25 Seagate Technology Llc Acoustic and vibration mitigation in a data storage system
WO2024094299A1 (en) * 2022-11-02 2024-05-10 Telefonaktiebolaget Lm Ericsson (Publ) Airflow devices

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE35124E (en) 1974-06-24 1995-12-19 General Electric Company Control system, electronically commutated motor system, draft inducer apparatus and method
US4500821A (en) 1983-06-09 1985-02-19 General Electric Company Speed or torque control circuit for an electronically commutated motor (ECM) and method of controlling the torque or speed of an ECM
US4779031A (en) * 1985-12-30 1988-10-18 Intellico, Inc. Motor system
US4656553A (en) 1986-01-21 1987-04-07 Comair Rotron, Inc. Electronically programmable universal brushless DC fan with integral tracking and locked rotor protection
US4983895A (en) 1986-10-08 1991-01-08 Hitachi, Ltd. Method and apparatus for operating vacuum cleaner
US5099181A (en) 1991-05-03 1992-03-24 Canon K N Hsu Pulse-width modulation speed controllable DC brushless cooling fan
US5146145A (en) 1991-06-10 1992-09-08 The United States Of America As Represented By The Secretary Of The Navy Electric drive system for submarine machinery
US5365154A (en) * 1991-07-12 1994-11-15 North Coast Electronics, Inc. Appliance control system and method
US5492273A (en) 1992-05-27 1996-02-20 General Electric Company Heating ventilating and/or air conditioning system having a variable speed indoor blower motor
US5473229A (en) 1992-05-27 1995-12-05 General Electric Company Interface between programmable electronically commutated motor and personal computer and method of operation
US5422550A (en) * 1993-05-27 1995-06-06 Southwest Electric Company Control of multiple motors, including motorized pumping system and method
US5345156A (en) 1993-12-30 1994-09-06 Whirlpool Corporation Control for high speed operation of brushless permanent magnet motor
GB2287622B (en) 1994-03-17 1998-10-28 Nissan Motor Multiplex serial data communication circuit network and method and motor control system and method using multiplex serial data communication circuit network
EP0676688A3 (en) 1994-04-08 1997-06-18 Sun Microsystems Inc Apparatus and methods for saving power in computing machinery.
US5513361A (en) 1994-07-25 1996-04-30 Intel Corporation Method and apparatus for reducing power consumption of a fan in a computer system
US5727928A (en) 1995-12-14 1998-03-17 Dell Usa L.P. Fan speed monitoring system for determining the speed of a PWM fan
KR100260380B1 (en) 1996-01-26 2000-07-01 윤종용 System & method of controlling fan for micro processor chip
US5847526A (en) * 1996-04-24 1998-12-08 Lasko; William E. Microprocessor controlled fan
US5744921A (en) * 1996-05-02 1998-04-28 Siemens Electric Limited Control circuit for five-phase brushless DC motor
US5872434A (en) 1997-08-28 1999-02-16 Barber Colman Company Systems and methods for actuator power failure response
DE19836882A1 (en) 1998-08-14 2000-02-17 Papst Motoren Gmbh & Co Kg Electric motor has characteristic field stored as digital values for associating parameter and motor speed values, and microcontroller or microprocessor
US6147465A (en) 1999-03-25 2000-11-14 General Electric Company Microprocessor controlled single phase motor with external rotor having integral fan
US6392372B1 (en) * 2000-03-31 2002-05-21 Ljm Products, Inc. Brushless DC fan module incorporating integral fan control circuit with a communication port for receiving digital commands to control fan

Also Published As

Publication number Publication date
WO2001076057A2 (en) 2001-10-11
US6545438B1 (en) 2003-04-08
WO2001076057A3 (en) 2002-04-04

Similar Documents

Publication Publication Date Title
AU2001251089A1 (en) Cooling module incorporating communication port and related circuits
AU2002309889A1 (en) Telecommunications chassis and module
AU2001243392A1 (en) An integrated circuit architecture with standard blocks
AU2001240031A1 (en) Standard block architecture for integrated circuit design
AU2001236895A1 (en) Integrated circuit
AU2002366851A1 (en) Coupling circuit arrangement for data communication over power lines
AU2002356199A1 (en) Interconnect chassis and module
AU2002339815A1 (en) Power systems power circuits and components for power systems
AU2002230998A1 (en) Compact wireless telephone with enabling module
AU2002356182A1 (en) Interconnect module
AU2002231293A1 (en) Preventing access overload in mobile phone systems
EP1220450B8 (en) Semiconductor integrated circuit
AU2002214541A1 (en) Power line communication circuit
AU2002301711A1 (en) Ejector circuit
AU2001236639A1 (en) Cooler
EP1263078A3 (en) Transmission line, integrated circuit and transmitter-receiver
AU5689501A (en) Module for radio communication
AU2002309597A1 (en) Telecommunications chassis and card
AU2002257296A1 (en) Telecommunications chassis and card
EP1246361B8 (en) Input circuit
AU2002250460A1 (en) Telecommunications chassis and card
GB2375656B (en) Nonreciprocal circuit device and communication device
AUPR056200A0 (en) Communication arrangement
AU2002348220A1 (en) Commercial electronic communication devices
AU2002249160A1 (en) Combined electrical/optical foil lines and circuits