DK142559C - Alarmkredsloeb til overvaagning af et rum - Google Patents

Alarmkredsloeb til overvaagning af et rum

Info

Publication number
DK142559C
DK142559C DK395975A DK395975A DK142559C DK 142559 C DK142559 C DK 142559C DK 395975 A DK395975 A DK 395975A DK 395975 A DK395975 A DK 395975A DK 142559 C DK142559 C DK 142559C
Authority
DK
Denmark
Prior art keywords
monitoring
room
alarm circuit
alarm
circuit
Prior art date
Application number
DK395975A
Other languages
English (en)
Other versions
DK395975A (da
DK142559B (da
Inventor
H Beyersdorf
Original Assignee
Beyersdorf Hartwig
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 Beyersdorf Hartwig filed Critical Beyersdorf Hartwig
Publication of DK395975A publication Critical patent/DK395975A/da
Publication of DK142559B publication Critical patent/DK142559B/da
Application granted granted Critical
Publication of DK142559C publication Critical patent/DK142559C/da

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)
  • Fire Alarms (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Alarm Systems (AREA)
  • Electronic Switches (AREA)
DK395975A 1974-10-31 1975-09-03 Alarmkredsloeb til overvaagning af et rum DK142559C (da)

Applications Claiming Priority (2)

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
DE2451907 1974-10-31

Publications (3)

Publication Number Publication Date
DK395975A DK395975A (da) 1976-05-01
DK142559B DK142559B (da) 1980-11-17
DK142559C true DK142559C (da) 1981-07-20

Family

ID=5929783

Family Applications (1)

Application Number Title Priority Date Filing Date
DK395975A DK142559C (da) 1974-10-31 1975-09-03 Alarmkredsloeb til overvaagning af et rum

Country Status (11)

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

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
EP0015656B1 (en) * 1979-02-09 1983-12-14 Philip Charles Sefton Improvements relating to security equipment
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 (en) * 2005-10-19 2007-04-25 Honeywell International, Inc. Monitoring of alarm system wiring
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 (en) * 2020-05-21 2021-11-24 Carrier Corporation Short circuit locating

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 (da) * 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
FR2289982B1 (da) 1978-04-07
FR2289982A1 (fr) 1976-05-28
NL165866C (nl) 1981-05-15
ES441936A1 (es) 1977-04-01
IT1044021B (it) 1980-02-29
DE2451907C2 (de) 1981-11-12
US4037220A (en) 1977-07-19
SE7512113L (sv) 1976-05-03
DE2451907B1 (de) 1975-11-13
SE402170B (sv) 1978-06-19
DK395975A (da) 1976-05-01
CA1029094A (en) 1978-04-04
GB1470727A (en) 1977-04-21
NL165866B (nl) 1980-12-15
AT350943B (de) 1979-06-25
NL7512832A (nl) 1976-05-04
DK142559B (da) 1980-11-17
ATA570875A (de) 1978-11-15

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