GB1261088A - X-ray tube kilovoltage control system - Google Patents
X-ray tube kilovoltage control systemInfo
- Publication number
- GB1261088A GB1261088A GB30905/69A GB3090569A GB1261088A GB 1261088 A GB1261088 A GB 1261088A GB 30905/69 A GB30905/69 A GB 30905/69A GB 3090569 A GB3090569 A GB 3090569A GB 1261088 A GB1261088 A GB 1261088A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- windings
- secondary windings
- control system
- voltage
- 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
- H05G1/58—Switching arrangements for changing-over from one mode of operation to another, e.g. from radioscopy to radiography, from radioscopy to irradiation or from one tube voltage to another
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S323/00—Electricity: power supply or regulation systems
- Y10S323/911—Medical electronics
Landscapes
- X-Ray Techniques (AREA)
Abstract
1,261,088. Transformers. PICKER CORP. 18 June, 1969 [9 July, 1968], No. 30905/69. Heading H1T. [Also in Division H2] X-ray apparatus comprising an X-ray tube 62 fed from an A.C. supply 10, 12 by way of a transformer 14 and a rectifying device 66 is provided with a control system which includes a plurality of relays 20-32 by means of which any desired series connection of the secondary windings 14S1-14S64 may be selected so as to vary the voltage applied to the X-ray tube 62. The output voltages of the secondary windings 14S are arranged in a binary sequence 1, 2, 4, 8 ... and these may be selected in any order to provide any voltage variation in single steps from 1 to 127 and when selected the windings are connected in series with a reference secondary winding 14SR. Certain of the secondary windings are separate from the primary winding 14P whereas other secondary windings are arranged in an autotransformer mode, and the primary winding 14P is provided with tappings 14P1-14P10. The control system for energizing the relays 20-32 includes numerous transistors and thyristors which form counting devices, bistable multivibrators and various switching and adjusting devices. Adjustments are provided to limit the minimum and maximum voltages that can be applied to the tube and to control the applied voltage when the apparatus is used for radiography or fluoroscopy. The apparatus includes means for ensuring that the selection of the windings 14S to provide a required tube operating voltage is made before the tube can be energized which means includes delay means which inhibits conduction of a thyristor 58 between the transformer 14 and the rectifier 56 until the end of the delay period. Means are also provided to prevent further operation of the relay selecting system once an exposure has been initiated.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US74342168A | 1968-07-09 | 1968-07-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1261088A true GB1261088A (en) | 1972-01-19 |
Family
ID=24988701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30905/69A Expired GB1261088A (en) | 1968-07-09 | 1969-06-18 | X-ray tube kilovoltage control system |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3631527A (en) |
| DE (1) | DE1934630A1 (en) |
| GB (1) | GB1261088A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3750005A (en) * | 1971-09-20 | 1973-07-31 | Us Army | High efficiency constant voltage to constant current converter for energy storage |
| DE2223371B2 (en) * | 1972-05-12 | 1976-09-02 | Siemens AG, 1000 Berlin und 8000 München | X-RAY DIAGNOSTIC APPARATUS WITH A REGULATING DEVICE FOR THE X-RAY PIPE VOLTAGE |
| DE2347178B2 (en) * | 1973-09-19 | 1975-09-18 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | X-ray diagnostic apparatus |
| DE2803913C2 (en) * | 1978-01-30 | 1986-01-30 | Siemens AG, 1000 Berlin und 8000 München | X-ray diagnostic system with an image intensifier television chain |
| US4348590A (en) * | 1980-10-27 | 1982-09-07 | General Electric Company | X-ray tube anode voltage compensator |
| US6271635B1 (en) * | 1999-01-11 | 2001-08-07 | Advanced Lighting Technologies, Inc. | Dimming system and method for magnetically ballasted gaseous discharge lamps |
| US6958579B2 (en) * | 2002-08-07 | 2005-10-25 | Ruud Lighting, Inc. | Thermally-protected ballast for high-intensity-discharge lamps |
| US20150264789A1 (en) * | 2014-03-14 | 2015-09-17 | General Electric Company | Methods and systems for controlling voltage switching |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2840718A (en) * | 1954-03-26 | 1958-06-24 | Westinghouse Electric Corp | X-ray apparatus |
| US3255403A (en) * | 1963-03-20 | 1966-06-07 | Gen Electric | Voltage regulating system |
-
1968
- 1968-07-09 US US743421A patent/US3631527A/en not_active Expired - Lifetime
-
1969
- 1969-06-18 GB GB30905/69A patent/GB1261088A/en not_active Expired
- 1969-07-08 DE DE19691934630 patent/DE1934630A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US3631527A (en) | 1971-12-28 |
| DE1934630A1 (en) | 1970-01-29 |
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