CH615302A5 - - Google Patents

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Publication number
CH615302A5
CH615302A5 CH307677A CH307677A CH615302A5 CH 615302 A5 CH615302 A5 CH 615302A5 CH 307677 A CH307677 A CH 307677A CH 307677 A CH307677 A CH 307677A CH 615302 A5 CH615302 A5 CH 615302A5
Authority
CH
Switzerland
Prior art keywords
signal
network
transistor
voltage
pulse
Prior art date
Application number
CH307677A
Other languages
German (de)
English (en)
Inventor
Fred Hiroshi Sawada
Frank Michael Klementowski
James Saunders Bishop
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of CH615302A5 publication Critical patent/CH615302A5/de

Links

Classifications

    • 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
    • G01R31/34—Testing dynamo-electric machines

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Relating To Insulation (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Measurement Of Current Or Voltage (AREA)
CH307677A 1976-03-11 1977-03-11 CH615302A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/666,150 US4058804A (en) 1976-03-11 1976-03-11 Signal monitoring system

Publications (1)

Publication Number Publication Date
CH615302A5 true CH615302A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1980-01-15

Family

ID=24673027

Family Applications (1)

Application Number Title Priority Date Filing Date
CH307677A CH615302A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1976-03-11 1977-03-11

Country Status (5)

Country Link
US (1) US4058804A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS52121702A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH615302A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2710232C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1564384A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5943852B2 (ja) * 1977-02-08 1984-10-25 株式会社日立製作所 信号ホ−ルド回路
US4163227A (en) * 1978-05-01 1979-07-31 General Electric Company Apparatus for monitoring arcing of brushes in a dynamoelectric machine
US4204156A (en) * 1978-07-03 1980-05-20 General Electric Company Apparatus for aligning brushes of a dynamoelectric machine
US4376243A (en) * 1981-01-26 1983-03-08 General Motors Corporation Arc detector for electric rod furnace
US4558275A (en) * 1981-04-21 1985-12-10 The Superior Electric Company Line voltage monitor system
JPS5812556A (ja) * 1981-07-14 1983-01-24 Hitachi Ltd 集電装置の火花監視装置
US4451786A (en) * 1982-03-01 1984-05-29 General Electric Company High sensitivity brush arcing monitor for a dynamoelectric machine
US7649470B2 (en) * 2002-09-10 2010-01-19 Alstom Technology Ltd. Method and apparatus for detection of brush sparking and spark erosion on electrical machines
DE50310287D1 (de) * 2002-09-10 2008-09-18 Alstom Technology Ltd Vorrichtung und verfahren zur überwachung und/oder analyse von elektrischen maschinen im betrieb
AU2003297598A1 (en) * 2002-09-10 2004-04-30 Alstom Technology Ltd Method and device for detecting sparking and spark erosion in electric machines
DE102005060324B4 (de) * 2005-12-16 2021-03-18 Robert Bosch Gmbh Erfassung des Verschleißes einer Motoransteuerung
US8618943B2 (en) 2007-05-24 2013-12-31 Cutsforth, Inc. Brush holder assembly monitoring apparatus, assembly, system and method
EP2112518A1 (en) * 2008-04-25 2009-10-28 ALSTOM Technology Ltd Brush wear monitor
US8643539B2 (en) * 2008-11-19 2014-02-04 Nokomis, Inc. Advance manufacturing monitoring and diagnostic tool
JP2013090425A (ja) * 2011-10-18 2013-05-13 Hitachi Ltd 異常摩耗診断装置及びそれを備えた回転電機
AU2016271337B2 (en) 2015-06-01 2018-07-26 Cutsforth, Inc. Brush wear and vibration monitoring
EP3403153B1 (en) 2016-01-11 2020-12-30 Cutsforth, Inc. Monitoring system for grounding apparatus
US9991832B2 (en) * 2016-08-04 2018-06-05 Infineon Technologies Ag Detecting brushfire in power systems
US10448864B1 (en) 2017-02-24 2019-10-22 Nokomis, Inc. Apparatus and method to identify and measure gas concentrations
US11489847B1 (en) 2018-02-14 2022-11-01 Nokomis, Inc. System and method for physically detecting, identifying, and diagnosing medical electronic devices connectable to a network
EP3861605A1 (en) 2018-10-04 2021-08-11 Cutsforth, Inc. System and method for monitoring the status of one or more components of an electrical machine
WO2020072806A2 (en) 2018-10-04 2020-04-09 Cutsforth, Inc. System and method for monitoring the status of one or more components of an electrical machine
US12416673B2 (en) * 2022-10-12 2025-09-16 GM Global Technology Operations LLC Systems and methods for testing partial discharge during the leakage and/or surge tests for electric machines

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1557850A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1968-01-02 1969-02-21
US3588705A (en) * 1969-11-12 1971-06-28 Nasa Frequency-modulation demodulator threshold extension device
US3653019A (en) * 1970-07-28 1972-03-28 Gen Electric Signal monitoring system

Also Published As

Publication number Publication date
JPS52121702A (en) 1977-10-13
US4058804A (en) 1977-11-15
JPS5624354B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1981-06-05
DE2710232A1 (de) 1977-09-22
DE2710232C2 (de) 1983-04-21
GB1564384A (en) 1980-04-10

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Legal Events

Date Code Title Description
PL Patent ceased
PL Patent ceased