GB582715A - Improvements in or relating to protective systems for x-ray apparatus - Google Patents
Improvements in or relating to protective systems for x-ray apparatusInfo
- Publication number
- GB582715A GB582715A GB10902/43A GB1090243A GB582715A GB 582715 A GB582715 A GB 582715A GB 10902/43 A GB10902/43 A GB 10902/43A GB 1090243 A GB1090243 A GB 1090243A GB 582715 A GB582715 A GB 582715A
- Authority
- GB
- United Kingdom
- Prior art keywords
- timer
- transformer
- voltage
- vkv
- potentiometer
- 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
- H05G1/46—Combined control of different quantities, e.g. exposure time as well as voltage or current
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- X-Ray Techniques (AREA)
Abstract
582,715. Control systems for space discharge apparatus. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. July 5, 1943, No. 10902. Convention date, July 7, 1942. [Class 38 (iv)] . To prevent overloading of an X-ray tube 22, supplied through transformers 12, 20 and rectifier 23, a protective relay 31, energized by voltages VKV and Vt, which are in series and dependent, respectively, upon the proposed input voltage to transformer 20 and the setting of the exposure timer 27, is adapted to open the timer supply circuit at contacts 30, and thus prevent closure of a timer relay 25 in the primary circuit of transformer 20, when the voltages VKV and Vt correspond to overload conditions. Voltage Vt is derived from a potentiometer 34 which is supplied by a transformer 36 from mains 10 and the moving contact 35 of which is connected mechanically to the pointer 28 of the timer so as to move with the latter. The potentiometer may be graded to compensate for the non-linear anode voltagetime rating characteristics of the tube, whereby all incipient overload conditions produce the same actuating voltage for the protective relay.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US449996A US2351486A (en) | 1942-07-07 | 1942-07-07 | X-ray exposure system |
Publications (1)
Publication Number | Publication Date |
---|---|
GB582715A true GB582715A (en) | 1946-11-26 |
Family
ID=23786329
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB10902/43A Expired GB582715A (en) | 1942-07-07 | 1943-07-05 | Improvements in or relating to protective systems for x-ray apparatus |
Country Status (3)
Country | Link |
---|---|
US (1) | US2351486A (en) |
FR (1) | FR949290A (en) |
GB (1) | GB582715A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB586504A (en) * | 1944-12-21 | 1947-03-20 | Philips Nv | Improvements in and relating to x-ray control apparatus |
US2528545A (en) * | 1946-03-19 | 1950-11-07 | Transres Of California | X-ray radiation time recorder and controller |
NL72521C (en) * | 1948-09-30 | 1953-06-15 | Philips Nv | device for making X-ray images |
US2853654A (en) * | 1956-08-13 | 1958-09-23 | Gen Electric | Lighting circuit current regulator |
US3061729A (en) * | 1959-10-12 | 1962-10-30 | Profexray Inc | X-ray tube current metering circuit |
-
1942
- 1942-07-07 US US449996A patent/US2351486A/en not_active Expired - Lifetime
-
1943
- 1943-07-05 GB GB10902/43A patent/GB582715A/en not_active Expired
-
1947
- 1947-07-10 FR FR949290D patent/FR949290A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2351486A (en) | 1944-06-13 |
FR949290A (en) | 1949-09-02 |
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