GB821106A - Improvements in or relating to radiographic apparatus - Google Patents
Improvements in or relating to radiographic apparatusInfo
- Publication number
- GB821106A GB821106A GB1614556A GB1614556A GB821106A GB 821106 A GB821106 A GB 821106A GB 1614556 A GB1614556 A GB 1614556A GB 1614556 A GB1614556 A GB 1614556A GB 821106 A GB821106 A GB 821106A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- voltage
- anode
- ray tube
- condenser
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/26—Measuring, controlling or protecting
- H05G1/30—Controlling
- H05G1/32—Supply voltage of the X-ray apparatus or tube
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- X-Ray Techniques (AREA)
Abstract
821,106. Automatic control systems for X-ray apparatus. GENERAL ELECTRIC CO. Ltd. May 24, 1957 [May 24, 1956], No. 16145/56. Class 38 (4). In radiographic apparatus means responsive to the radiation emerging from a subject in front of an X-ray tube controls the voltage applied to the anode of the tube. In a mass radiography unit, X-rays passing through a subject give a picture on a fluorescent screen which is photographed and also influences a photo-multiplier tube 6, Fig. 2, to produce across a resistor 8 a voltage dependent on the intensity of illumination. This voltage is applied through a valve amplifier 15 to operate relays such as MR and LR in sequence as required until the voltage applied to the anode of the X-ray tube (not shown) is reduced sufficiently by changing tappings on an autotransformer (not shown) to give a picture of the desired contrast with varying subjects. Tube 6 also charges a condenser 7 until its voltage, representing the integral of light intensity, is sufficient to operate a relay 12 which disconnects the anode supply to the X-ray tube and thereby determines the exposure time. Condenser 7 is discharged before each exposure by a switch 14. Use of saturable reactors instead of valves is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1614556A GB821106A (en) | 1956-05-24 | 1956-05-24 | Improvements in or relating to radiographic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1614556A GB821106A (en) | 1956-05-24 | 1956-05-24 | Improvements in or relating to radiographic apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB821106A true GB821106A (en) | 1959-09-30 |
Family
ID=10071999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1614556A Expired GB821106A (en) | 1956-05-24 | 1956-05-24 | Improvements in or relating to radiographic apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB821106A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1614150B1 (en) * | 1966-04-07 | 1971-07-15 | Medicor Muevek | X-RAY LIGHTING DEVICE / WITH PHOTOELECTRIC CONVERTER TO SCAN THE ILLUMINATED AREA FOR THE PURPOSE OF DETERMINING THE OPTIMAL VALUES OF X-RAY TUBE VOLTAGE AND CURRENT |
-
1956
- 1956-05-24 GB GB1614556A patent/GB821106A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1614150B1 (en) * | 1966-04-07 | 1971-07-15 | Medicor Muevek | X-RAY LIGHTING DEVICE / WITH PHOTOELECTRIC CONVERTER TO SCAN THE ILLUMINATED AREA FOR THE PURPOSE OF DETERMINING THE OPTIMAL VALUES OF X-RAY TUBE VOLTAGE AND CURRENT |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US1934484A (en) | Camera | |
| GB1240583A (en) | Cinematographic x-ray equipment | |
| US3783286A (en) | X-ray image brightness stabilizer | |
| US2486866A (en) | Dual phototube X-ray timer for selective exposure of chest films | |
| GB1370926A (en) | X-ray exposure control apparatus | |
| US2640160A (en) | Exposure monitor for horizontal cassette changer | |
| GB821106A (en) | Improvements in or relating to radiographic apparatus | |
| GB987263A (en) | X-ray apparatus | |
| US2561085A (en) | Automatic exposure timer | |
| GB1328843A (en) | X-ray apparatus | |
| FR2315209A1 (en) | X-ray diagnostic apparatus for taking moving pictures - has control circuit for light integral applied to camera | |
| GB840780A (en) | Improvements in or relating to installations for making x-ray photographs | |
| GB767477A (en) | Improvements in or relating to x-ray apparatus | |
| US2486089A (en) | Time delay control | |
| GB1476416A (en) | Control apparatus for an x-ray machine | |
| GB706671A (en) | Improvements in or relating to timing devices for use with x-rays and other penetrating radiations | |
| US2885563A (en) | Photographic exposure timer | |
| US3027460A (en) | X-ray device | |
| GB1328376A (en) | X-ray apparatus | |
| GB593764A (en) | A new or improved exposure control system for photographic purposes | |
| GB1018935A (en) | Improvements in or relating to x-ray diagnosing apparatus | |
| US2408576A (en) | Apparatus for integrating radiant energy | |
| Morgan | The automatic control of exposure in photofluorography | |
| US2123018A (en) | X-ray system | |
| SU972672A1 (en) | Device for regulating the degree of coating dielectric surface with powder material x-ray apparatus |