BE791365A - Dispositif de detection des variations de temperature - Google Patents

Dispositif de detection des variations de temperature

Info

Publication number
BE791365A
BE791365A BE791365DA BE791365A BE 791365 A BE791365 A BE 791365A BE 791365D A BE791365D A BE 791365DA BE 791365 A BE791365 A BE 791365A
Authority
BE
Belgium
Prior art keywords
detection device
temperature variations
variations detection
temperature
variations
Prior art date
Application number
Other languages
English (en)
Original Assignee
Guilleux Robert
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.)
Publication date
Priority claimed from FR7140728A external-priority patent/FR2161126A5/fr
Publication of BE791365A publication Critical patent/BE791365A/fr

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
    • H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/286—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable
    • H03K3/2893—Bistables with hysteresis, e.g. Schmitt trigger
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K3/00—Thermometers giving results other than momentary value of temperature
    • G01K3/08—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values
    • G01K3/10—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values in respect of time, e.g. reacting only to a quick change of temperature
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/30—Modifications for providing a predetermined threshold before switching

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
BE791365D 1971-11-15 Dispositif de detection des variations de temperature BE791365A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7140728A FR2161126A5 (fr) 1971-11-15 1971-11-15
FR7147781A FR2166628A6 (fr) 1971-11-15 1971-12-31

Publications (1)

Publication Number Publication Date
BE791365A true BE791365A (fr) 1973-03-01

Family

ID=26216718

Family Applications (1)

Application Number Title Priority Date Filing Date
BE791365D BE791365A (fr) 1971-11-15 Dispositif de detection des variations de temperature

Country Status (9)

Country Link
US (1) US3813565A (fr)
JP (1) JPS4868287A (fr)
BE (1) BE791365A (fr)
CA (1) CA987760A (fr)
CH (1) CH567246A5 (fr)
DE (1) DE2256009A1 (fr)
FR (1) FR2166628A6 (fr)
GB (1) GB1421337A (fr)
IT (1) IT970464B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5525625B2 (fr) * 1974-05-13 1980-07-07
DE2635640A1 (de) * 1975-08-11 1977-03-03 Wormald Int Waerme-detektoreinrichtung
EP0092145B1 (fr) * 1982-04-21 1988-06-22 Kabushiki Kaisha Toshiba Circuit à transistors
DE3710871A1 (de) * 1987-04-01 1988-10-20 Standard Elektrik Lorenz Ag Schaltung zur formung einer messsignalspannung in ein rechtecksignal
KR100854463B1 (ko) * 2007-05-21 2008-08-27 주식회사 하이닉스반도체 온도센서회로 및 이를 이용한 반도체 메모리 장치
JP6218404B2 (ja) * 2013-03-18 2017-10-25 エスアイアイ・セミコンダクタ株式会社 受光回路
CN105976551B (zh) * 2016-06-22 2018-05-15 中铁二局集团勘测设计院有限责任公司 一种基于bim的火灾报警系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3296546A (en) * 1964-08-31 1967-01-03 Jr William J Schneider Transistor circuit constructions for active type band pass filters
US3501711A (en) * 1968-11-12 1970-03-17 Textron Inc Zero-voltage driven-cable amplifier
US3654468A (en) * 1970-03-11 1972-04-04 Industrial Nucleonics Corp Radiation measurement system with mosfet electrometer circuit which is protected against voltage transients

Also Published As

Publication number Publication date
JPS4868287A (fr) 1973-09-18
GB1421337A (en) 1976-01-14
FR2166628A6 (fr) 1973-08-17
CH567246A5 (fr) 1975-09-30
DE2256009A1 (de) 1973-05-17
IT970464B (it) 1974-04-10
US3813565A (en) 1974-05-28
CA987760A (en) 1976-04-20

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