DE2049717C3 - lonisations-Rauchfühler - Google Patents

lonisations-Rauchfühler

Info

Publication number
DE2049717C3
DE2049717C3 DE19702049717 DE2049717A DE2049717C3 DE 2049717 C3 DE2049717 C3 DE 2049717C3 DE 19702049717 DE19702049717 DE 19702049717 DE 2049717 A DE2049717 A DE 2049717A DE 2049717 C3 DE2049717 C3 DE 2049717C3
Authority
DE
Germany
Prior art keywords
source
field effect
effect transistor
ionization
control electrode
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
DE19702049717
Other languages
German (de)
English (en)
Other versions
DE2049717B2 (de
DE2049717A1 (de
Inventor
Akihiro Fujisawa Kanagawa Kobayashi (Japan)
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.)
Nittan Co Ltd
Original Assignee
Nittan Co Ltd
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 Nittan Co Ltd filed Critical Nittan Co Ltd
Publication of DE2049717A1 publication Critical patent/DE2049717A1/de
Publication of DE2049717B2 publication Critical patent/DE2049717B2/de
Application granted granted Critical
Publication of DE2049717C3 publication Critical patent/DE2049717C3/de
Expired 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)
DE19702049717 1969-10-09 1970-10-09 lonisations-Rauchfühler Expired DE2049717C3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8033769 1969-10-09

Publications (3)

Publication Number Publication Date
DE2049717A1 DE2049717A1 (de) 1971-04-29
DE2049717B2 DE2049717B2 (de) 1975-05-15
DE2049717C3 true DE2049717C3 (de) 1975-12-18

Family

ID=13715432

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19702049717 Expired DE2049717C3 (de) 1969-10-09 1970-10-09 lonisations-Rauchfühler

Country Status (5)

Country Link
CA (1) CA928872A (enrdf_load_stackoverflow)
DE (1) DE2049717C3 (enrdf_load_stackoverflow)
FR (1) FR2065109A5 (enrdf_load_stackoverflow)
GB (1) GB1278925A (enrdf_load_stackoverflow)
SE (1) SE356624B (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH586941A5 (enrdf_load_stackoverflow) * 1975-07-25 1977-04-15 Cerberus Ag

Also Published As

Publication number Publication date
GB1278925A (en) 1972-06-21
CA928872A (en) 1973-06-19
DE2049717B2 (de) 1975-05-15
DE2049717A1 (de) 1971-04-29
SE356624B (enrdf_load_stackoverflow) 1973-05-28
FR2065109A5 (enrdf_load_stackoverflow) 1971-07-23

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee