FR2402909A1 - Dispositif de branchement pour un avertisseur d'incendie a ionisation - Google Patents

Dispositif de branchement pour un avertisseur d'incendie a ionisation

Info

Publication number
FR2402909A1
FR2402909A1 FR7820537A FR7820537A FR2402909A1 FR 2402909 A1 FR2402909 A1 FR 2402909A1 FR 7820537 A FR7820537 A FR 7820537A FR 7820537 A FR7820537 A FR 7820537A FR 2402909 A1 FR2402909 A1 FR 2402909A1
Authority
FR
France
Prior art keywords
circuit
coupled
fire detector
impedance converter
mosfet system
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
FR7820537A
Other languages
English (en)
Other versions
FR2402909B3 (fr
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.)
RFT MESSELEKTRONIK DRESDEN VEB
Original Assignee
RFT MESSELEKTRONIK DRESDEN VEB
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 RFT MESSELEKTRONIK DRESDEN VEB filed Critical RFT MESSELEKTRONIK DRESDEN VEB
Publication of FR2402909A1 publication Critical patent/FR2402909A1/fr
Application granted granted Critical
Publication of FR2402909B3 publication Critical patent/FR2402909B3/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
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)
  • Amplifiers (AREA)

Abstract

a. Dispositif de branchement pour un avertisseur d'incendie à ionisation. b. Dispositif caractérisé en ce que l'un des systèmes du transistor double MOS à effet de champ est prevu comme transformateur d'impédance, et en coopération avec l'autre système, comme suiveur de double source en tant qu'entrée d'un branchement d'électromètre, tandis qu'un amplificateur opérationnel est branché en aval du suivi de double source. c. L'invention s'applique notamment à la protection des bâtiments contre l'incendie.
FR7820537A 1977-09-07 1978-07-10 Dispositif de branchement pour un avertisseur d'incendie a ionisation Granted FR2402909A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD20091077A DD132694A1 (de) 1977-09-07 1977-09-07 Schaltungsanordnung fuer einen ionisationsfeuermelder

Publications (2)

Publication Number Publication Date
FR2402909A1 true FR2402909A1 (fr) 1979-04-06
FR2402909B3 FR2402909B3 (fr) 1981-02-06

Family

ID=5509657

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7820537A Granted FR2402909A1 (fr) 1977-09-07 1978-07-10 Dispositif de branchement pour un avertisseur d'incendie a ionisation

Country Status (5)

Country Link
DD (1) DD132694A1 (fr)
DE (1) DE2827619A1 (fr)
FI (1) FI782708A (fr)
FR (1) FR2402909A1 (fr)
SU (1) SU945878A1 (fr)

Also Published As

Publication number Publication date
FI782708A (fi) 1979-03-08
DD132694A1 (de) 1978-10-18
DE2827619A1 (de) 1979-03-08
SU945878A1 (ru) 1982-07-23
FR2402909B3 (fr) 1981-02-06

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Legal Events

Date Code Title Description
ST Notification of lapse