GB766556A - Improvements relating to radiation responsive apparatus - Google Patents

Improvements relating to radiation responsive apparatus

Info

Publication number
GB766556A
GB766556A GB3578453A GB3578453A GB766556A GB 766556 A GB766556 A GB 766556A GB 3578453 A GB3578453 A GB 3578453A GB 3578453 A GB3578453 A GB 3578453A GB 766556 A GB766556 A GB 766556A
Authority
GB
United Kingdom
Prior art keywords
temperature
output
bodies
dec
photo
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
GB3578453A
Inventor
Bernard Nelson Watts
John Raymond Howells
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB3578453A priority Critical patent/GB766556A/en
Publication of GB766556A publication Critical patent/GB766556A/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
    • G01J1/44—Electric circuits

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Fixing For Electrophotography (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)

Abstract

766,556. Photo-electric control systems. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 20, 1954 [Dec. 23, 1953], No. 35784/53. Class 40 (3). [Also in Group XL (c)] A photo-conductive cell P which is to effect a control in accordance with the temperature of rapidly passing bodies but which is to give an output independent of ambient temperature is connected to an amplifier V1 from the output of which a feed-back signal is derived, amplified at V2 rectified at D1 and integrated at R6, C3 by a circuit of time constant long, relative to the pulse received from the heated bodies. Thus the gain of valve V1, which is of the variable mu-type; is adjusted in accordance with average noise level which varies with temperature and the output of valve V1 is a true indication of the temperature of the hot bodies. A similar rectifier D2 and smoothing arrangement may operate a cathode follower V3 to give warning if the noise becomes excessive or zero owing to a faulty cell.
GB3578453A 1953-12-23 1953-12-23 Improvements relating to radiation responsive apparatus Expired GB766556A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3578453A GB766556A (en) 1953-12-23 1953-12-23 Improvements relating to radiation responsive apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3578453A GB766556A (en) 1953-12-23 1953-12-23 Improvements relating to radiation responsive apparatus

Publications (1)

Publication Number Publication Date
GB766556A true GB766556A (en) 1957-01-23

Family

ID=10381519

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3578453A Expired GB766556A (en) 1953-12-23 1953-12-23 Improvements relating to radiation responsive apparatus

Country Status (1)

Country Link
GB (1) GB766556A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129639A (en) * 1979-10-19 1984-05-16 France Etat Detecting vehicles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129639A (en) * 1979-10-19 1984-05-16 France Etat Detecting vehicles

Similar Documents

Publication Publication Date Title
NZ209184A (en) Photocell detector with amplifier temperature compensation
KR100190976B1 (en) High dynamic range closed loop automatic gain control system
GB1462504A (en) Proximity sensors
GB766556A (en) Improvements relating to radiation responsive apparatus
GB1352758A (en) Flaw detector
US3719149A (en) Two channel optical fuze with infrared sensing bridge
US2363361A (en) Control track stabilizing method and system
JPS5370479A (en) Photo agc system
JPS5226145A (en) Automatic gain adjustment circuit
GB1284386A (en) Window trip monitor and comparator circuit
JPS57145426A (en) Binary coding circuit for video signal
GB899852A (en) Photoelectric amplifier and sorting system
JPS56120275A (en) Infrared image sensor
JPS5678210A (en) Automatic gain control amplifier
ES356246A1 (en) A differential amplifier adjustable with transistors. (Machine-translation by Google Translate, not legally binding)
GB817467A (en) Improvements in or relating to photoelectric detection systems
GB1063173A (en) Compensating circuit for slow detectors
GB762957A (en) Improvements relating to apparatus for the detection of infra-red radiation
JPS54100645A (en) Automatic gain control circuit
JPS57141160A (en) Optical receiver
GB585419A (en) Improvements in or relating to valve amplifiers
JPS55114917A (en) Agc circuit
GB612117A (en) Improvements in or relating to d.c. amplifiers and signal maintaining circuits associated therewith
JPS5314280A (en) Control system
GB617897A (en) A new or improved pyrometer