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GB1099030A - Detector apparatus energized by radiant energy - Google Patents

Detector apparatus energized by radiant energy

Info

Publication number
GB1099030A
GB1099030A GB4952465A GB4952465A GB1099030A GB 1099030 A GB1099030 A GB 1099030A GB 4952465 A GB4952465 A GB 4952465A GB 4952465 A GB4952465 A GB 4952465A GB 1099030 A GB1099030 A GB 1099030A
Authority
GB
United Kingdom
Prior art keywords
capacitor
fire
photo
radiant energy
transistor
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
GB4952465A
Inventor
Alfred Walter Vasel
Rudolph Wentworth Kalns
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.)
Pyrotector Inc
Original Assignee
Pyrotector Inc
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 Pyrotector Inc filed Critical Pyrotector Inc
Priority to GB4952465A priority Critical patent/GB1099030A/en
Priority to BE673271D priority patent/BE673271A/fr
Publication of GB1099030A publication Critical patent/GB1099030A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4204—Photometry, e.g. photographic exposure meter using electric radiation detectors with determination of ambient light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4228—Photometry, e.g. photographic exposure meter using electric radiation detectors arrangements with two or more detectors, e.g. for sensitivity compensation
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

1,099,030. Transistor switching circuits. PYROTECTOR Inc. Nov. 22, 1965, No. 49524/65. Heading H3T. [Also in Divisions G1 and G4] A fire detector is powered by photo-generative cells 14 which respond to ambient light radiation. Transistor T1 has its base connected to photo resistors 10, 12 responsive to red and blue light respectively so that light from a fire will forward bias T1, T2. The fall in collector potential of T2 feeds a pulse via capacitor C3 to switch on T3 and fire controlled rectifier CR1. Capacitor C4 provides positive feedback for trigger circuit T2, T3. Firing rectifier CR1 allows capacitor C2 to discharge through alarm unit 16 which may be a visible or audible device or an electricallyfired squib. The unit may also actuate an extinguisher.
GB4952465A 1962-07-30 1965-11-22 Detector apparatus energized by radiant energy Expired GB1099030A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4952465A GB1099030A (en) 1965-11-22 1965-11-22 Detector apparatus energized by radiant energy
BE673271D BE673271A (en) 1962-07-30 1965-12-03

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4952465A GB1099030A (en) 1965-11-22 1965-11-22 Detector apparatus energized by radiant energy

Publications (1)

Publication Number Publication Date
GB1099030A true GB1099030A (en) 1968-01-10

Family

ID=10452628

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4952465A Expired GB1099030A (en) 1962-07-30 1965-11-22 Detector apparatus energized by radiant energy

Country Status (1)

Country Link
GB (1) GB1099030A (en)

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