GB243320A - Improvements in or relating to radiography - Google Patents
Improvements in or relating to radiographyInfo
- Publication number
- GB243320A GB243320A GB23774/25A GB2377425A GB243320A GB 243320 A GB243320 A GB 243320A GB 23774/25 A GB23774/25 A GB 23774/25A GB 2377425 A GB2377425 A GB 2377425A GB 243320 A GB243320 A GB 243320A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electromagnet
- circuit
- supply
- supplied
- energy
- 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
- H05G1/38—Exposure time
- H05G1/42—Exposure time using arrangements for switching when a predetermined dose of radiation has been applied, e.g. in which the switching instant is determined by measuring the electrical energy supplied to the tube
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- X-Ray Techniques (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
243,320. Soc. Anon. Etablissements Gaiffe-Gallot et Pilon. Nov. 18, 1924, [Convention date]. R÷ntgen-ray apparatus. - The electric supply system of a R÷ntgen-ray tube includes a switching system which cuts out the supply when a predetermined quantity of energy has been supplied to the tube, in order that the radiographic exposure may be rendered independent of variations in the supply current and voltage. An electromagnet 8 in series with the secondary 6 and an electromagnet 9 in shunt with the primary 5 of the supply transformer, produce a torque .proportional to the energy supplied upon a rotary metal disc 10 braked by an adjustable magnet 11, and carrying a contact member 12 which may be adjusted to any predetermined point of a scale on the periphery of the disc. The supply is cut in by manually closing a switch 2. thereby completing the circuit of an electromagnet 3 which closes the circuit of the transformer primary. When the predetermined quantity of energy has been supplied, the contact 12 short circuits contacts 14, and completes the circuit of an electromagnet 15 which opens the circuit of the transformer primary.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR243320X | 1924-11-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB243320A true GB243320A (en) | 1926-04-08 |
Family
ID=8883454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23774/25A Expired GB243320A (en) | 1924-11-18 | 1925-09-23 | Improvements in or relating to radiography |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1634208A (en) |
| DE (1) | DE489750C (en) |
| GB (1) | GB243320A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE763160C (en) * | 1933-09-09 | 1953-07-20 | Siemens Reiniger Werke Ag | Device for the operation of X-ray tubes with glow cathode |
-
1925
- 1925-09-23 DE DEE33080D patent/DE489750C/en not_active Expired
- 1925-09-23 GB GB23774/25A patent/GB243320A/en not_active Expired
- 1925-09-24 US US58462A patent/US1634208A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE489750C (en) | 1930-01-22 |
| US1634208A (en) | 1927-06-28 |
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