FR2329032A1 - Aircraft fire detection system - uses three transistor circuit to obviate false alarms in case of detector faults and low voltages - Google Patents

Aircraft fire detection system - uses three transistor circuit to obviate false alarms in case of detector faults and low voltages

Info

Publication number
FR2329032A1
FR2329032A1 FR7532279A FR7532279A FR2329032A1 FR 2329032 A1 FR2329032 A1 FR 2329032A1 FR 7532279 A FR7532279 A FR 7532279A FR 7532279 A FR7532279 A FR 7532279A FR 2329032 A1 FR2329032 A1 FR 2329032A1
Authority
FR
France
Prior art keywords
detection system
fire detection
case
transistor
transistor circuit
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.)
Granted
Application number
FR7532279A
Other languages
French (fr)
Other versions
FR2329032B1 (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.)
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
Priority to FR7532279A priority Critical patent/FR2329032A1/en
Publication of FR2329032A1 publication Critical patent/FR2329032A1/en
Application granted granted Critical
Publication of FR2329032B1 publication Critical patent/FR2329032B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch

Abstract

The electronically controlled fire detection system is designed to operate various warning elements and or protection devices by relays controlled by variable resistance surveillance detection. The system has a first transistor whose base and emitter are connected to the terminals of the detector circuits and which control the conductivity of a second transistor. The second transistor controls the supply of one or several relays controlling the warning and or protection elements. A third transistor controls the supply of a supplementary relay designed to control a fault signalling element when a fault occurs in the circuit of the detectors.
FR7532279A 1975-10-22 1975-10-22 Aircraft fire detection system - uses three transistor circuit to obviate false alarms in case of detector faults and low voltages Granted FR2329032A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7532279A FR2329032A1 (en) 1975-10-22 1975-10-22 Aircraft fire detection system - uses three transistor circuit to obviate false alarms in case of detector faults and low voltages

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7532279A FR2329032A1 (en) 1975-10-22 1975-10-22 Aircraft fire detection system - uses three transistor circuit to obviate false alarms in case of detector faults and low voltages

Publications (2)

Publication Number Publication Date
FR2329032A1 true FR2329032A1 (en) 1977-05-20
FR2329032B1 FR2329032B1 (en) 1981-08-07

Family

ID=9161497

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7532279A Granted FR2329032A1 (en) 1975-10-22 1975-10-22 Aircraft fire detection system - uses three transistor circuit to obviate false alarms in case of detector faults and low voltages

Country Status (1)

Country Link
FR (1) FR2329032A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2540656A1 (en) * 1983-02-09 1984-08-10 Lhotellier Ets Louis Fire detection device using voltage comparators

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2540656A1 (en) * 1983-02-09 1984-08-10 Lhotellier Ets Louis Fire detection device using voltage comparators

Also Published As

Publication number Publication date
FR2329032B1 (en) 1981-08-07

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Legal Events

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TP Transmission of property