GB615367A - Improvements in control systems for x-ray tubes - Google Patents
Improvements in control systems for x-ray tubesInfo
- Publication number
- GB615367A GB615367A GB22933/46A GB2293346A GB615367A GB 615367 A GB615367 A GB 615367A GB 22933/46 A GB22933/46 A GB 22933/46A GB 2293346 A GB2293346 A GB 2293346A GB 615367 A GB615367 A GB 615367A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- tube current
- winding
- saturating
- tapping
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
- G05F1/32—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices
- G05F1/34—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices combined with discharge tubes or semiconductor devices
-
- 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
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- X-Ray Techniques (AREA)
Abstract
615,367. Control systems for space discharge apparatus; automatic control systems. PHILIPS LAMPS, Ltd. Aug. 1, 1946, No. 22933. Convention date, Nov. 10, 1942. [Class 38 (iv)] In X-ray apparatus having control means for the tube current coupled to means controlling the voltage applied to the tube, or to means controlling the loading period, or to both, so that the tube capacity may be fully utilized without overloading, means is also provided to maintain the tube current at its adjusted value. Preferably, this automatic control operates upon the same element as is adjusted to determine tube current, which, as described, is a saturable reactor 18 in the heating circuit of the tube cathode 3. Fig. 1 shows this reactor 18 with a saturating winding 17, the voltage applied to which is changed in accordance with the voltage placed on the tube anode 2 by adjustment of the tapping switch 13 ; to maintain the tube current constant, an oppositely excited saturating winding 21 is supplied from a D.C. source 22 opposed by the potential drop in a resistance 10 carrying the tube current. Fig. 2 shows the reactor 18 with saturating windings 17 (as above) and other windings 21, 30. Winding 30 is energized according to the loading period, which is adjusted by varying the cathode potential of a tuning valve 31. by means of a tapping on a potentiometer 34 and winding 21 maintains the tube current constant in response to the p.d. on a resistance 27 in the anode circuit of the X-ray tube. Adjustments required by tube characteristics are obtained in Fig. 1 by means of a tapping 23 and in Fig. 2 by a variable resistance 26 in series with an auxiliary saturating winding 23.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL108434A NL61614C (en) | 1942-11-10 | 1942-11-10 | roentgen device, wherein the tube current regulating means is coupled to the tube voltage and / or load duration regulators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB615367A true GB615367A (en) | 1949-01-05 |
Family
ID=19874499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22933/46A Expired GB615367A (en) | 1942-11-10 | 1946-08-01 | Improvements in control systems for x-ray tubes |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2506674A (en) |
| BE (1) | BE453078A (en) |
| DE (1) | DE936349C (en) |
| FR (1) | FR899489A (en) |
| GB (1) | GB615367A (en) |
| NL (1) | NL61614C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110868786A (en) * | 2019-11-20 | 2020-03-06 | 浙江大学 | High-voltage wide-range X-ray power supply dynamic characteristic optimization multi-section control algorithm |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3269692A (en) * | 1965-05-25 | 1966-08-30 | Homer J Shafer | Ball valve construction |
| DE2205098C3 (en) * | 1972-02-03 | 1982-12-30 | Siemens AG, 1000 Berlin und 8000 München | X-ray diagnostic apparatus with a resistor arrangement for generating an electrical signal corresponding to the X-ray tube current |
| DE2950818A1 (en) * | 1979-12-17 | 1981-06-25 | Siemens AG, 1000 Berlin und 8000 München | X-RAY DIAGNOSTIC GENERATOR WITH A RADIATION SHIELD ENCLOSING THE X-RAY TUBES |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1999736A (en) * | 1931-07-10 | 1935-04-30 | Westinghouse X Ray Co Inc | Discharge device stabilizer system |
| DE745137C (en) * | 1934-03-13 | 1944-02-28 | Siemens Reiniger Werke Ag | Device to protect x-ray pipes against overload |
| DE859043C (en) * | 1941-02-09 | 1952-12-11 | Koch & Sterzel Ag | Device for regulating the anode current of a glow cathode discharge tube, in particular the tube current of a X-ray tube |
| US2319378A (en) * | 1941-10-09 | 1943-05-18 | Westinghouse Electric & Mfg Co | Stabilizer system |
| US2404905A (en) * | 1944-01-31 | 1946-07-30 | Philips Corp | Electrical circuit arrangement |
-
1942
- 1942-11-10 NL NL108434A patent/NL61614C/en active
-
1943
- 1943-11-08 FR FR899489D patent/FR899489A/en not_active Expired
- 1943-11-09 DE DEN2491D patent/DE936349C/en not_active Expired
- 1943-11-09 BE BE453078A patent/BE453078A/en unknown
-
1946
- 1946-04-25 US US664728A patent/US2506674A/en not_active Expired - Lifetime
- 1946-08-01 GB GB22933/46A patent/GB615367A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110868786A (en) * | 2019-11-20 | 2020-03-06 | 浙江大学 | High-voltage wide-range X-ray power supply dynamic characteristic optimization multi-section control algorithm |
Also Published As
| Publication number | Publication date |
|---|---|
| US2506674A (en) | 1950-05-09 |
| FR899489A (en) | 1945-05-31 |
| BE453078A (en) | 1943-12-21 |
| NL61614C (en) | 1948-09-15 |
| DE936349C (en) | 1955-12-07 |
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