GB766556A - Improvements relating to radiation responsive apparatus - Google Patents
Improvements relating to radiation responsive apparatusInfo
- 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
Links
- 230000005855 radiation Effects 0.000 title 1
- 238000009499 grossing Methods 0.000 abstract 1
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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2129639A (en) * | 1979-10-19 | 1984-05-16 | France Etat | Detecting vehicles |
-
1953
- 1953-12-23 GB GB3578453A patent/GB766556A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2129639A (en) * | 1979-10-19 | 1984-05-16 | France Etat | Detecting vehicles |
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