FR2475768B1 - - Google Patents
Info
- Publication number
- FR2475768B1 FR2475768B1 FR8102439A FR8102439A FR2475768B1 FR 2475768 B1 FR2475768 B1 FR 2475768B1 FR 8102439 A FR8102439 A FR 8102439A FR 8102439 A FR8102439 A FR 8102439A FR 2475768 B1 FR2475768 B1 FR 2475768B1
- Authority
- FR
- France
- Prior art keywords
- voltage
- direct current
- current supply
- supply voltage
- measuring chamber
- 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
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
- G08B29/04—Monitoring of the detection circuits
-
- 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
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Detection Mechanisms (AREA)
- Fire Alarms (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3004753A DE3004753C2 (de) | 1980-02-08 | 1980-02-08 | Brandmeldeeinrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2475768A1 FR2475768A1 (fr) | 1981-08-14 |
FR2475768B1 true FR2475768B1 (fr) | 1983-09-23 |
Family
ID=6094144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8102439A Granted FR2475768A1 (fr) | 1980-02-08 | 1981-02-06 | Dispositif avertisseur d'incendie |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0033888B2 (fr) |
AT (1) | ATE11346T1 (fr) |
DE (2) | DE3004753C2 (fr) |
FR (1) | FR2475768A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5189399A (en) * | 1989-02-18 | 1993-02-23 | Hartwig Beyersdorf | Method of operating an ionization smoke alarm and ionization smoke alarm |
DE3904979A1 (de) * | 1989-02-18 | 1990-08-23 | Beyersdorf Hartwig | Verfahren zum betrieb eines ionisationsrauchmelders und ionisationsrauchmelder |
CN106741986B (zh) * | 2016-12-21 | 2023-08-29 | 太原航空仪表有限公司 | 具有驱动功能的振杆器 |
CN114325383B (zh) * | 2021-12-20 | 2024-07-02 | 中国人民解放军总参谋部第六十研究所 | 一种无人直升机用无刷电机绕组故障检测系统及方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH497755A (de) * | 1969-06-24 | 1970-10-15 | Cerberus Ag | Ionisationsfeuermelder |
NO129270B (fr) * | 1970-05-16 | 1974-03-18 | Preussag Ag Feuerschutz | |
CA1019077A (en) * | 1974-01-07 | 1977-10-11 | Wilbur L. Ogden | Fire detector |
CH586941A5 (fr) * | 1975-07-25 | 1977-04-15 | Cerberus Ag | |
US4138664A (en) * | 1976-12-14 | 1979-02-06 | Pittway Corporation | Warning device |
US4302753A (en) * | 1978-01-26 | 1981-11-24 | Pittway Corporation | Multi-function combustion detecting device |
-
1980
- 1980-02-08 DE DE3004753A patent/DE3004753C2/de not_active Expired
-
1981
- 1981-01-26 EP EP81100552A patent/EP0033888B2/fr not_active Expired - Lifetime
- 1981-01-26 DE DE8181100552T patent/DE3168215D1/de not_active Expired
- 1981-01-26 AT AT81100552T patent/ATE11346T1/de not_active IP Right Cessation
- 1981-02-06 FR FR8102439A patent/FR2475768A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
EP0033888A2 (fr) | 1981-08-19 |
DE3168215D1 (en) | 1985-02-28 |
EP0033888B2 (fr) | 1991-02-06 |
EP0033888B1 (fr) | 1985-01-16 |
ATE11346T1 (de) | 1985-02-15 |
DE3004753A1 (de) | 1981-08-27 |
EP0033888A3 (en) | 1982-11-03 |
FR2475768A1 (fr) | 1981-08-14 |
DE3004753C2 (de) | 1983-12-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |