ZA90412B - Current monitoring - Google Patents

Current monitoring

Info

Publication number
ZA90412B
ZA90412B ZA90412A ZA90412A ZA90412B ZA 90412 B ZA90412 B ZA 90412B ZA 90412 A ZA90412 A ZA 90412A ZA 90412 A ZA90412 A ZA 90412A ZA 90412 B ZA90412 B ZA 90412B
Authority
ZA
South Africa
Prior art keywords
current monitoring
monitoring
current
Prior art date
Application number
ZA90412A
Other languages
English (en)
Inventor
Malcolm Robin Reeves
Robin Reeves Malcolm
Original Assignee
Westinghouse Brake & Signal
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 Westinghouse Brake & Signal filed Critical Westinghouse Brake & Signal
Publication of ZA90412B publication Critical patent/ZA90412B/xx

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L7/00—Remote control of local operating means for points, signals, or track-mounted scotch-blocks
    • B61L7/06—Remote control of local operating means for points, signals, or track-mounted scotch-blocks using electrical transmission
    • B61L7/08—Circuitry
    • B61L7/10—Circuitry for light signals, e.g. for supervision, back-signalling
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/25—Circuit arrangements for protecting against overcurrent

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
ZA90412A 1989-02-08 1990-01-19 Current monitoring ZA90412B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8902793A GB2228091B (en) 1989-02-08 1989-02-08 Current monitoring

Publications (1)

Publication Number Publication Date
ZA90412B true ZA90412B (en) 1990-10-31

Family

ID=10651317

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA90412A ZA90412B (en) 1989-02-08 1990-01-19 Current monitoring

Country Status (7)

Country Link
US (1) US5025195A (ja)
EP (1) EP0381890A1 (ja)
JP (1) JPH02240576A (ja)
AU (1) AU621189B2 (ja)
CA (1) CA2004563C (ja)
GB (1) GB2228091B (ja)
ZA (1) ZA90412B (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1002842C2 (nl) * 1996-04-11 1997-10-15 Netherlands Car Bv Lampaanstuurschakeling.
CA2609619A1 (en) * 2007-09-10 2009-03-10 Veris Industries, Llc Status indicator
KR20100119043A (ko) * 2009-04-30 2010-11-09 삼성전자주식회사 광원 구동 방법, 이를 수행하기 위한 광원 구동 장치 및 이를 포함하는 표시 장치

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3170070A (en) * 1959-10-19 1965-02-16 S H Couch Company Inc Current detecting system
US3252058A (en) * 1963-01-28 1966-05-17 Sperry Rand Corp System for detecting a monitoring input
US3298011A (en) * 1964-03-31 1967-01-10 Stanley E Lehnhardt Digital indicator system with storage
US3524133A (en) * 1966-09-09 1970-08-11 Gen Electric Static state voltage and current monitoring device for electric power cable terminations
US3566266A (en) * 1967-03-09 1971-02-23 Nat Instr Lab Inc Voltmeter
US3509460A (en) * 1967-11-01 1970-04-28 Bell Telephone Labor Inc High impedance,self-zeroing,dc voltmeter circuit
GB1294381A (en) * 1970-02-06 1972-10-25 English Electric Co Ltd Improvements in rotatable rectifier systems
DE2223039A1 (de) * 1972-05-06 1973-11-22 Licentia Gmbh Schaltungsanordnung zur ueberwachung von gluehlampen
US3967257A (en) * 1973-01-09 1976-06-29 Westinghouse Electric Corporation Current monitor circuits
US3870954A (en) * 1973-10-09 1975-03-11 Rca Corp Starter system fault detector
FR2255775A1 (en) * 1973-12-20 1975-07-18 King Gordon Vehicle failure lamp indicating cct. - signals failures of one or several lamps in and contains resistors in series with lamps
US3913023A (en) * 1974-03-27 1975-10-14 Int Standard Electric Corp Fail-safe logic circuit arrangement for use in railway signalling systems
FR2311476A1 (fr) * 1975-05-16 1976-12-10 Dba Dispositif de detection et d'indication de defauts pour systeme d'eclairage intermittent
DE2748323A1 (de) * 1977-10-27 1979-05-03 Riba Jutta Kontrollgeraet zur ueberwachung von gluehlampen
DE3042415C2 (de) * 1980-11-11 1990-08-02 AEG-Telefunken Kabelwerke AG, Rheydt, 4050 Mönchengladbach Schaltung zur Fehlermeldung bei einem über eine elektronische Schalteinrichtung geschalteten Stromverbraucher
US4583086A (en) * 1982-04-08 1986-04-15 Remote Sensors, Inc. Circuit for monitoring the operating condition of an electric load
US4558310A (en) * 1982-09-29 1985-12-10 Mcallise Raymond J Current sensing device and monitor
GB2137036B (en) * 1983-03-11 1986-12-17 Electronic Components Ltd Lamp monitoring circuit
JPS60182219A (ja) * 1984-02-29 1985-09-17 Fujitsu Ltd 半導体装置
DE3644226A1 (de) * 1986-12-23 1988-07-07 Siemens Ag Pruefeinrichtung fuer einen lampenstromkreis
US4931778A (en) * 1989-02-27 1990-06-05 Teledyne Industries, Inc. Circuitry for indicating the presence of an overload or short circuit in solid state relay circuits

Also Published As

Publication number Publication date
EP0381890A1 (en) 1990-08-16
GB8902793D0 (en) 1989-03-30
JPH02240576A (ja) 1990-09-25
US5025195A (en) 1991-06-18
GB2228091A (en) 1990-08-15
GB2228091B (en) 1992-09-23
AU4899490A (en) 1990-08-16
CA2004563A1 (en) 1990-08-08
AU621189B2 (en) 1992-03-05
CA2004563C (en) 1998-04-21

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