GB1182700A - Improvements in or relating to Electrical Supervisory Systems - Google Patents

Improvements in or relating to Electrical Supervisory Systems

Info

Publication number
GB1182700A
GB1182700A GB58170/67A GB5817067A GB1182700A GB 1182700 A GB1182700 A GB 1182700A GB 58170/67 A GB58170/67 A GB 58170/67A GB 5817067 A GB5817067 A GB 5817067A GB 1182700 A GB1182700 A GB 1182700A
Authority
GB
United Kingdom
Prior art keywords
circuit
zener diode
line
pair
current
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
GB58170/67A
Other languages
English (en)
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.)
Honeywell Inc
Original Assignee
Honeywell Inc
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 Honeywell Inc filed Critical Honeywell Inc
Publication of GB1182700A publication Critical patent/GB1182700A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B23/00—Alarms responsive to unspecified undesired or abnormal conditions

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire Alarms (AREA)
  • Alarm Systems (AREA)
  • Selective Calling Equipment (AREA)
GB58170/67A 1966-12-23 1967-12-21 Improvements in or relating to Electrical Supervisory Systems Expired GB1182700A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60438266A 1966-12-23 1966-12-23

Publications (1)

Publication Number Publication Date
GB1182700A true GB1182700A (en) 1970-03-04

Family

ID=24419377

Family Applications (1)

Application Number Title Priority Date Filing Date
GB58170/67A Expired GB1182700A (en) 1966-12-23 1967-12-21 Improvements in or relating to Electrical Supervisory Systems

Country Status (4)

Country Link
US (1) US3500394A (https=)
BE (1) BE708467A (https=)
DE (1) DE1566708A1 (https=)
GB (1) GB1182700A (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2319213C1 (ru) * 2006-08-21 2008-03-10 Закрытое Акционерное Общество Электротехнический Завод "Гэксар" Многоблочный источник питания

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4518177Y1 (https=) * 1967-11-25 1970-07-24
US3550120A (en) * 1968-12-09 1970-12-22 Honeywell Inc Control apparatus
US3641570A (en) * 1969-04-02 1972-02-08 Francis T Thompson Alarm system
US3599206A (en) * 1969-11-17 1971-08-10 Gulf & Western Systems Co N Alarm circuit supervisory means
US3653041A (en) * 1969-12-02 1972-03-28 Gulf & Western Syst Co Annunciator system
US3641547A (en) * 1970-05-25 1972-02-08 Alarmtronics Eng Inc Line security system
AT307931B (de) * 1970-08-08 1973-06-12 Danfoss As Alarmschaltung
GB1345412A (en) * 1971-02-04 1974-01-30 Lewis N W Electrical alarm systems
US3699569A (en) * 1972-01-28 1972-10-17 Minnesota Mining & Mfg Security system for indicating fire, intrusion or the like
US3978476A (en) * 1973-12-17 1976-08-31 Hochiki Corporation Circuit conduction test arrangement for emergency alarm systems
JPS5417047Y2 (https=) * 1974-06-24 1979-07-03
US4199029A (en) * 1978-04-10 1980-04-22 Fike Metal Products Corporation Multiple, independently actuatable fire suppression devices each having individual actuating power source
US4191954A (en) * 1978-07-03 1980-03-04 Swiss Aluminium Ltd. Interrupted circuit test with memory and display device
US4529970A (en) * 1982-10-18 1985-07-16 Baker Industries Inc. Supervision system for monitoring the integrity of a transmission line
US4506254A (en) * 1982-11-10 1985-03-19 General Signal Corporation Alarm system with detectors and signaling devices on the same cable pair
US4716401A (en) * 1985-09-19 1987-12-29 Deere & Company Tamper-resistant supervisory system
EP1777671A1 (en) * 2005-10-19 2007-04-25 Honeywell International, Inc. Monitoring of alarm system wiring
DE102008048929B4 (de) * 2008-09-25 2010-06-24 Novar Gmbh Prüfung der Meldelinien einer Gefahrenmeldeanlage
CN104658203B (zh) * 2013-11-22 2017-08-25 西门子瑞士有限公司 用于报警系统的线末端模块、控制器及控制方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3195043A (en) * 1961-05-19 1965-07-13 Westinghouse Electric Corp Hall effect proximity transducer
US3230440A (en) * 1962-04-02 1966-01-18 North American Aviation Inc Power supply with short circuit protection
US3254334A (en) * 1963-12-19 1966-05-31 American District Telegraph Co Electrical protection system utilizing reverse polarity line testing with unidirectional current devices having reverse breakdown characteristic
US3311907A (en) * 1964-06-08 1967-03-28 Hugh E Teal Solid state over-voltage and under-voltage detector
US3304547A (en) * 1964-12-30 1967-02-14 Iii Benedict Bristol Alarm system
US3382409A (en) * 1965-04-20 1968-05-07 Ericsson Telefon Ab L M Overcurrent-and overvoltage-protection arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2319213C1 (ru) * 2006-08-21 2008-03-10 Закрытое Акционерное Общество Электротехнический Завод "Гэксар" Многоблочный источник питания

Also Published As

Publication number Publication date
BE708467A (https=) 1968-05-02
DE1566708A1 (de) 1970-10-22
US3500394A (en) 1970-03-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees