GB676732A - Improvements in or relating to x-ray devices - Google Patents
Improvements in or relating to x-ray devicesInfo
- Publication number
- GB676732A GB676732A GB23280/50A GB2328050A GB676732A GB 676732 A GB676732 A GB 676732A GB 23280/50 A GB23280/50 A GB 23280/50A GB 2328050 A GB2328050 A GB 2328050A GB 676732 A GB676732 A GB 676732A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- voltage
- choke
- anode
- electrode
- 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
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/025—X-ray tubes with structurally associated circuit elements
-
- 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
- H05G1/10—Power supply arrangements for feeding the X-ray tube
- H05G1/20—Power supply arrangements for feeding the X-ray tube with high-frequency ac; with pulse trains
Abstract
676,732. X-ray tubes. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Sept. 22, 1950 [Sept. 26, 1949], No. 23280/50. Class 39 (i). [Also in Group XXXV] X-rays are produced by a series of voltage pulses across a tube 2 having a control electrode 7 and at least one screen electrode 8, the tube being connected through a series choke 3 to a D.C. source Vb. The source is of too low a voltage to produce X-rays, but by utilizing the control electrode to cause periodic interruption of the current across the tube, a voltage pulse is built up across the choke each time which is sufficiently high to cause X-ray emission. The circuit is shown in Fig. 1; the provision of the screen electrode 8, which is connected through a resistance 9 to the supply source, serves to reduce the control-voltage Vg required, and also to reduce the sensitiveness of the cathode emission to anode voltage variations. The interruption of the current is preferably arranged to be # to of the period of the oscillatory time of the LC-circuit, and the voltage variation on the control electrode is such that the energy in the choke, after interruption of the current, is withdrawn by way of the tube, thus avoiding a counter voltage. In the practical embodiment of Fig. 2, the anode 24 is secured to a re-entrant part 30 of the tube wall in which the choke is housed integrally. The choke is built up of a number of separate parts 31 connected in series between the anode and the metal outer wall 10 of the tube, which is at earth potential. Each coil part 31 is carried by a metal ring 32, the rings being separated by glass or porcelain segments of the re-entrant wall 30, A cooling liquid, preferably oil, is introduced through an insulating pipe 33 and flows through channels 34 in the anode into the coil chamber and out through opening 37. The cathode 13 is surrounded by the cylindrical control electrode 14, which has a supply lead 22: and the screening electrode 17, formed with a re-entrant cylindrical tube 19, has a supply lead 23.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL148926A NL73982C (en) | 1949-09-26 | 1949-09-26 | X-ray generating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB676732A true GB676732A (en) | 1952-07-30 |
Family
ID=38464627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23280/50A Expired GB676732A (en) | 1949-09-26 | 1950-09-22 | Improvements in or relating to x-ray devices |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US2617046A (en) |
| BE (1) | BE498330A (en) |
| CH (1) | CH284921A (en) |
| DE (1) | DE863534C (en) |
| ES (1) | ES194685A1 (en) |
| FR (1) | FR1028832A (en) |
| GB (1) | GB676732A (en) |
| NL (1) | NL73982C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB731929A (en) * | 1951-02-03 | 1955-06-15 | Licentia Gmbh | Improvements in x-ray tubes |
| GB730803A (en) * | 1951-11-08 | 1955-06-01 | Licentia Gmbh | Improvements in and relating to x-ray tubes |
| US2683223A (en) * | 1952-07-24 | 1954-07-06 | Licentia Gmbh | X-ray tube |
| US2764706A (en) * | 1952-12-26 | 1956-09-25 | Dunlee Corp | Hooded anode x-ray tube with tilted target |
| NL87813C (en) * | 1953-01-28 | 1958-04-15 | Philips Nv | X-ray generating device |
| US2845559A (en) * | 1953-10-09 | 1958-07-29 | Westinghouse Electric Corp | Structure for high voltage tube |
| BE538316A (en) * | 1954-06-01 | |||
| US2853623A (en) * | 1957-06-04 | 1958-09-23 | Quentin A Kerns | X-ray pulse generator |
| US3018398A (en) * | 1958-10-27 | 1962-01-23 | Dunlee Corp | X-ray generator |
| GB1155088A (en) * | 1965-12-03 | 1969-06-18 | Yissum Res Dev Co | Improvements in Fluoroscopy |
| CN109637921B (en) * | 2013-11-14 | 2021-10-26 | Asml荷兰有限公司 | Multi-electrode electron optical system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE338093C (en) * | 1920-06-13 | 1921-06-13 | Siemens & Halske Akt Ges | Tube voltmeter |
| US2129646A (en) * | 1934-12-06 | 1938-09-13 | Philips Nv | X-ray apparatus |
| FR902303A (en) * | 1943-03-03 | 1945-08-28 | Philips Nv | X-ray machine whose tube is fed from a capacitor |
-
1949
- 1949-09-26 NL NL148926A patent/NL73982C/en active
-
1950
- 1950-09-15 US US184922A patent/US2617046A/en not_active Expired - Lifetime
- 1950-09-22 GB GB23280/50A patent/GB676732A/en not_active Expired
- 1950-09-23 ES ES0194685A patent/ES194685A1/en not_active Expired
- 1950-09-23 DE DEN1966A patent/DE863534C/en not_active Expired
- 1950-09-25 FR FR1028832D patent/FR1028832A/en not_active Expired
- 1950-09-25 CH CH284921D patent/CH284921A/en unknown
- 1950-09-25 BE BE498330D patent/BE498330A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE863534C (en) | 1953-01-19 |
| FR1028832A (en) | 1953-05-28 |
| NL73982C (en) | 1954-01-15 |
| US2617046A (en) | 1952-11-04 |
| CH284921A (en) | 1952-08-15 |
| ES194685A1 (en) | 1952-04-01 |
| BE498330A (en) | 1951-03-27 |
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