CA1029094A - Circuit arrangement for monitoring interruptions in two closed-circuit loops - Google Patents

Circuit arrangement for monitoring interruptions in two closed-circuit loops

Info

Publication number
CA1029094A
CA1029094A CA237,153A CA237153A CA1029094A CA 1029094 A CA1029094 A CA 1029094A CA 237153 A CA237153 A CA 237153A CA 1029094 A CA1029094 A CA 1029094A
Authority
CA
Canada
Prior art keywords
circuit
closed
loops
circuit arrangement
interruptions
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.)
Expired
Application number
CA237,153A
Other languages
English (en)
French (fr)
Inventor
Hartwig Beyersdorf
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA1029094A publication Critical patent/CA1029094A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Fire Alarms (AREA)
  • Electronic Switches (AREA)
  • Alarm Systems (AREA)
CA237,153A 1974-10-31 1975-10-07 Circuit arrangement for monitoring interruptions in two closed-circuit loops Expired CA1029094A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2451907A DE2451907C2 (de) 1974-10-31 1974-10-31 Schaltungsanordnung zur Überwachung von zwei Ruhestromschleifen auf Unterbrechung und Kurzschluß

Publications (1)

Publication Number Publication Date
CA1029094A true CA1029094A (en) 1978-04-04

Family

ID=5929783

Family Applications (1)

Application Number Title Priority Date Filing Date
CA237,153A Expired CA1029094A (en) 1974-10-31 1975-10-07 Circuit arrangement for monitoring interruptions in two closed-circuit loops

Country Status (11)

Country Link
US (1) US4037220A (de)
AT (1) AT350943B (de)
CA (1) CA1029094A (de)
DE (1) DE2451907C2 (de)
DK (1) DK142559C (de)
ES (1) ES441936A1 (de)
FR (1) FR2289982A1 (de)
GB (1) GB1470727A (de)
IT (1) IT1044021B (de)
NL (1) NL165866C (de)
SE (1) SE402170B (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7614000A (nl) * 1976-12-17 1978-06-20 Philips Nv Signaleringssysteem voor overspanningsbescher- mers.
US4204154A (en) * 1978-03-09 1980-05-20 Nasa Portable device for use in starting air-start units for aircraft and having cable lead testing capability
DE2829135C2 (de) * 1978-07-03 1982-09-02 Siemens AG, 1000 Berlin und 8000 München Überwachungseinrichtung für den Lampenausfall bei einer Flugplatzbefeuerung
ATE5618T1 (de) * 1979-02-09 1983-12-15 Philip Charles Sefton Sicherheitsvorrichtung.
DE3218375C2 (de) * 1982-05-15 1985-12-12 Karl Lautenschläger KG, Möbelbeschlagfabrik, 6107 Reinheim Eingelenk-Möbelscharnier
DE4325732C2 (de) * 1993-07-30 2003-04-24 Bosch Gmbh Robert Verfahren zur potentialfreien Überwachung von Ringleitungen
US6459370B1 (en) 1998-11-03 2002-10-01 Adt Services Ag Method and apparatus for determining proper installation of alarm devices
JP3918614B2 (ja) * 2002-04-09 2007-05-23 富士電機デバイステクノロジー株式会社 断線故障検知回路
EP1777671A1 (de) * 2005-10-19 2007-04-25 Honeywell International, Inc. Überwachung der Verdrahtung eines Alarmsystems
US8446285B2 (en) * 2008-02-08 2013-05-21 Siemens Industry, Inc. Methods and apparatus for controlling and testing a notification appliance circuit
US8477042B2 (en) * 2008-02-08 2013-07-02 Siemens Industry, Inc. Apparatus for signaling different notification appliance circuit configurations
EP3913594A1 (de) * 2020-05-21 2021-11-24 Carrier Corporation Ortung eines kurzschlusses

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE644989C (de) * 1932-10-09 1937-05-19 Raumschutz Akt Ges Deutsche Sicherungsanlage gegen Einbruch
DE906311C (de) * 1951-10-26 1954-03-11 Siemens Ag Elektrische Alarmanlage
US2871466A (en) * 1955-12-30 1959-01-27 American District Telegraph Co Automatic fire alarm system
US3032708A (en) * 1957-04-04 1962-05-01 Hickok Electrical Instr Compan Short indicator
US2913709A (en) * 1957-05-10 1959-11-17 Walter J Thorsen Fire alarm apparatus
US3071713A (en) * 1959-01-20 1963-01-01 Grinnell Corp Automatic rate of rise-responsive fire protection circuit
DE1159089B (de) * 1962-03-31 1963-12-12 Bryant Electric Co Schutzeinrichtung fuer elektrische Verbraucher, insbesondere Elektromotoren
US3354389A (en) * 1963-10-24 1967-11-21 Western Electric Co Automatic high speed test apparatus for testing continuity and shorts simultaneouslyon a plurality of circuit paths
US3351934A (en) * 1965-05-19 1967-11-07 Honeywell Inc Supervised alarm system
DE1791053A1 (de) * 1968-09-04 1971-10-28 Werner Karl Heinz Dipl Ing Schaltanordnung eines Zentralgeraetes fuer insbesondere elektrische Raumschutzanlagen
JPS4941907B1 (de) * 1969-05-13 1974-11-12
DE2056733A1 (de) * 1970-11-18 1972-05-25 Ewasig Elektronische Warnsigna Meldeanlage zum Sichern von Objekten, beispielsweise gegen Einbruch und/oder Diebstahl
US3725660A (en) * 1971-05-13 1973-04-03 Pyrotector Inc Fire detector with red and blue responsive photocells and regenerative feedback
DE2132161A1 (de) * 1971-06-29 1973-01-11 Klatt Heinz Eckhardt Ruhestromueberwachte alarmschleifenschaltung fuer den einsatz von mehreren einzeln gegen ueberbrueckung gesicherten kontakten in verbindung mit einem modifizierten schmitt-trigger
DE2254302C3 (de) * 1972-11-06 1978-04-06 August 8031 Stockdorf Woerl Ruhestromalarmanlage
US3920973A (en) * 1973-01-09 1975-11-18 Westinghouse Electric Corp Method and system for testing signal transmission paths

Also Published As

Publication number Publication date
DK395975A (da) 1976-05-01
FR2289982B1 (de) 1978-04-07
FR2289982A1 (fr) 1976-05-28
ATA570875A (de) 1978-11-15
DE2451907B1 (de) 1975-11-13
SE7512113L (sv) 1976-05-03
NL7512832A (nl) 1976-05-04
DK142559C (da) 1981-07-20
IT1044021B (it) 1980-02-29
ES441936A1 (es) 1977-04-01
US4037220A (en) 1977-07-19
GB1470727A (en) 1977-04-21
SE402170B (sv) 1978-06-19
DE2451907C2 (de) 1981-11-12
NL165866C (nl) 1981-05-15
AT350943B (de) 1979-06-25
DK142559B (da) 1980-11-17
NL165866B (nl) 1980-12-15

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